Initial commit - Backend API

.env

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+DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CORE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CRM_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartcrm
+COMMERCE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerce
+JWT_PRIVATE_KEY_PATH=jwt_private.pem
+JWT_PUBLIC_KEY_PATH=jwt_public.pem
+ALGORITHM=RS512
+ACCESS_TOKEN_EXPIRE_MIN=1440
+REFRESH_TOKEN_EXPIRE_DAYS=120
+PROJECT_NAME=iFixKart
+MAX_FAILED_LOGIN=5
+LOCKOUT_MINUTES=15
+PUBLIC_API_KEY=ifixkart_public_key_2026
+SECRET_KEY=9a3b6c4d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b
+ENVIRONMENT=production
+RUNTIME_ENV=production
+GOOGLE_CLIENT_ID=395995422555-3gf9b434jqf471qbhumdme72noudqptg.apps.googleusercontent.com
+GOOGLE_CLIENT_SECRET=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
+GOOGLE_REDIRECT_URI=https://ifixkartbe.trionixsolution.com/api/auth/google/callback
+RAZORPAY_KEY_ID=rzp_test_TTUzPFYF0hRV89
+RAZORPAY_KEY_SECRET=74tmlSkS4qK7zQaH1zclQfeH
+RAZORPAY_WEBHOOK_SECRET=6TjjXgErPG3@ZpM
+RAZORPAY_ENABLED=true

.env.production

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+# Production Server Database Credentials & URLs
+DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CORE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CRM_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartcrm
+COMMERCE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerce
+
+# Server JWT & Auth
+JWT_PRIVATE_KEY_PATH=jwt_private.pem
+JWT_PUBLIC_KEY_PATH=jwt_public.pem
+ALGORITHM=RS512
+ACCESS_TOKEN_EXPIRE_MIN=1440
+REFRESH_TOKEN_EXPIRE_DAYS=120
+PROJECT_NAME=iFixKart
+MAX_FAILED_LOGIN=5
+LOCKOUT_MINUTES=15
+PUBLIC_API_KEY=ifixkart_public_key_2026
+SECRET_KEY=9a3b6c4d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b
+
+# Server Environment & Domain Endpoints
+ENVIRONMENT=production
+RUNTIME_ENV=production
+GOOGLE_CLIENT_ID=395995422555-3gf9b434jqf471qbhumdme72noudqptg.apps.googleusercontent.com
+GOOGLE_CLIENT_SECRET=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
+GOOGLE_REDIRECT_URI=https://ifixkartbe.trionixsolution.com/api/auth/google/callback
+
+# Payment Gateway
+RAZORPAY_KEY_ID=rzp_test_TTUzPFYF0hRV89
+RAZORPAY_KEY_SECRET=74tmlSkS4qK7zQaH1zclQfeH
+RAZORPAY_WEBHOOK_SECRET=6TjjXgErPG3@ZpM
+RAZORPAY_ENABLED=true

.gitignore

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+node_modules/\n__pycache__/\nvenv/\n.env\n*.pyc

.pytest_cache/CACHEDIR.TAG

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+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by pytest.
+# For information about cache directory tags, see:
+#	https://bford.info/cachedir/spec.html

.pytest_cache/README.md

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+# pytest cache directory #
+
+This directory contains data from the pytest's cache plugin,
+which provides the `--lf` and `--ff` options, as well as the `cache` fixture.
+
+**Do not** commit this to version control.
+
+See [the docs](https://docs.pytest.org/en/stable/how-to/cache.html) for more information.

.pytest_cache/v/cache/lastfailed

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+{}

.pytest_cache/v/cache/nodeids

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+[
+  "tests/test_order_flow.py::test_cart_router_exports_sync_route",
+  "tests/test_order_flow.py::test_checkout_router_create_route_exists",
+  "tests/test_order_flow.py::test_final_amount_includes_tax",
+  "tests/test_order_flow.py::test_order_router_has_ulid_import",
+  "tests/test_service_engine.py::test_dynamic_slot_allocation_overlap",
+  "tests/test_service_engine.py::test_dynamic_slot_allocation_success"
+]

Backend/.env

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+DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CORE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CRM_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartcrm
+COMMERCE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerce
+JWT_PRIVATE_KEY_PATH=jwt_private.pem
+JWT_PUBLIC_KEY_PATH=jwt_public.pem
+ALGORITHM=RS512
+ACCESS_TOKEN_EXPIRE_MIN=1440
+REFRESH_TOKEN_EXPIRE_DAYS=120
+PROJECT_NAME=iFixKart
+MAX_FAILED_LOGIN=5
+LOCKOUT_MINUTES=15
+PUBLIC_API_KEY=ifixkart_public_key_2026
+SECRET_KEY=9a3b6c4d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b
+ENVIRONMENT=production
+RUNTIME_ENV=production
+GOOGLE_CLIENT_ID=395995422555-3gf9b434jqf471qbhumdme72noudqptg.apps.googleusercontent.com
+GOOGLE_CLIENT_SECRET=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
+GOOGLE_REDIRECT_URI=https://ifixkartbe.trionixsolution.com/api/auth/google/callback
+RAZORPAY_KEY_ID=rzp_test_TTUzPFYF0hRV89
+RAZORPAY_KEY_SECRET=74tmlSkS4qK7zQaH1zclQfeH
+RAZORPAY_WEBHOOK_SECRET=6TjjXgErPG3@ZpM
+RAZORPAY_ENABLED=true

Backend/.env.production

@@ -0,0 +1,30 @@
+# Production Server Database Credentials & URLs
+DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CORE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin
+CRM_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartcrm
+COMMERCE_DATABASE_URL=mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerce
+
+# Server JWT & Auth
+JWT_PRIVATE_KEY_PATH=jwt_private.pem
+JWT_PUBLIC_KEY_PATH=jwt_public.pem
+ALGORITHM=RS512
+ACCESS_TOKEN_EXPIRE_MIN=1440
+REFRESH_TOKEN_EXPIRE_DAYS=120
+PROJECT_NAME=iFixKart
+MAX_FAILED_LOGIN=5
+LOCKOUT_MINUTES=15
+PUBLIC_API_KEY=ifixkart_public_key_2026
+SECRET_KEY=9a3b6c4d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b
+
+# Server Environment & Domain Endpoints
+ENVIRONMENT=production
+RUNTIME_ENV=production
+GOOGLE_CLIENT_ID=395995422555-3gf9b434jqf471qbhumdme72noudqptg.apps.googleusercontent.com
+GOOGLE_CLIENT_SECRET=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
+GOOGLE_REDIRECT_URI=https://ifixkartbe.trionixsolution.com/api/auth/google/callback
+
+# Payment Gateway
+RAZORPAY_KEY_ID=rzp_test_TTUzPFYF0hRV89
+RAZORPAY_KEY_SECRET=74tmlSkS4qK7zQaH1zclQfeH
+RAZORPAY_WEBHOOK_SECRET=6TjjXgErPG3@ZpM
+RAZORPAY_ENABLED=true

Backend/app/api/v1/routers/AdminCustomerRouter.py

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+"""
+@router AdminCustomerRouter (Backend/app/api/v1/routers/AdminCustomerRouter.py)
+@purpose CRM Admin endpoint controllers to search, list, and inspect storefront e-commerce customers, addresses, and order history.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from pydantic import BaseModel, EmailStr
+from typing import List, Optional
+from datetime import datetime
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import get_current_user
+from app.models.UserModel import User
+from app.models.EcomCustomerModel import EcomCustomer, CustomerAddress
+from app.models.OrderModel import Order
+
+router = APIRouter(prefix="/api/v1/admin/customers", tags=["Admin CRM Storefront Customers"])
+
+# --- Schemas ---
+
+class CustomerAddressSchema(BaseModel):
+    address_id: str
+    address_type: str
+    full_name: str
+    phone: str
+    street_address: str
+    city: str
+    state: str
+    pincode: str
+    is_default: bool
+
+class CustomerOrderSummary(BaseModel):
+    order_id: str
+    order_no: str
+    final_amount: float
+    status: str
+    created_at: datetime
+
+class AdminCustomerListResponse(BaseModel):
+    customer_id: str
+    email: str
+    first_name: str
+    last_name: str
+    phone: Optional[str] = None
+    created_at: datetime
+
+class AdminCustomerDetailResponse(BaseModel):
+    customer_id: str
+    email: str
+    first_name: str
+    last_name: str
+    phone: Optional[str] = None
+    profile_picture: Optional[str] = None
+    created_at: datetime
+    addresses: List[CustomerAddressSchema]
+    orders: List[CustomerOrderSummary]
+
+# --- Endpoints ---
+
+@router.get("", response_model=List[AdminCustomerListResponse])
+def list_all_customers(
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    List all registered storefront customers.
+    """
+    customers = db.query(EcomCustomer).order_by(EcomCustomer.created_at.desc()).all()
+    return [
+        AdminCustomerListResponse(
+            customer_id=c.customer_id,
+            email=c.email,
+            first_name=c.first_name,
+            last_name=c.last_name,
+            phone=c.phone,
+            created_at=c.created_at
+        ) for c in customers
+    ]
+
+@router.get("/{customer_id}", response_model=AdminCustomerDetailResponse)
+def get_customer_details(
+    customer_id: str,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    Retrieve deep profile details, saved address books, and complete sales purchase history of a storefront customer.
+    """
+    customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == customer_id).first()
+    if not customer:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Storefront customer not found"
+        )
+
+    # Fetch addresses
+    addresses = db.query(CustomerAddress).filter(CustomerAddress.customer_id == customer_id).all()
+    
+    # Fetch orders
+    orders = db.query(Order).filter(Order.customer_id == customer_id).order_by(Order.created_at.desc()).all()
+
+    return AdminCustomerDetailResponse(
+        customer_id=customer.customer_id,
+        email=customer.email,
+        first_name=customer.first_name,
+        last_name=customer.last_name,
+        phone=customer.phone,
+        profile_picture=customer.profile_picture,
+        created_at=customer.created_at,
+        addresses=[
+            CustomerAddressSchema(
+                address_id=a.address_id,
+                address_type=a.address_type,
+                full_name=a.full_name,
+                phone=a.phone,
+                street_address=a.street_address,
+                city=a.city,
+                state=a.state,
+                pincode=a.pincode,
+                is_default=a.is_default
+            ) for a in addresses
+        ],
+        orders=[
+            CustomerOrderSummary(
+                order_id=o.order_id,
+                order_no=o.order_no,
+                final_amount=float(o.final_amount),
+                status=o.status,
+                created_at=o.created_at
+            ) for o in orders
+        ]
+    )

Backend/app/api/v1/routers/AdminInvoiceRouter.py

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+"""
+@router AdminInvoiceRouter (Backend/app/api/v1/routers/AdminInvoiceRouter.py)
+@purpose CRM Admin endpoint controllers to query, generate, and print standard PDF and 80mm thermal roll GST invoices on-the-fly.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status, Response
+from sqlalchemy.orm import Session
+from pydantic import BaseModel
+from typing import List, Optional
+from datetime import datetime
+import ulid
+import io
+import zipfile
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import get_current_user
+from app.models.UserModel import User
+from app.models.InvoiceModel import Invoice
+from app.models.OrderModel import Order, OrderItem
+from app.models.EcomCustomerModel import EcomCustomer
+from app.core.invoice_generator import generate_invoice_pdf, generate_thermal_invoice_pdf
+
+router = APIRouter(prefix="/api/v1/admin/invoices", tags=["Admin CRM Customer Invoices"])
+
+# --- Schemas ---
+
+class AdminInvoiceResponse(BaseModel):
+    invoice_id: str
+    invoice_no: str
+    order_id: Optional[str] = None
+    customer_id: str
+    customer_email: Optional[str] = None
+    subtotal: float
+    discount_amount: float
+    cgst: float
+    sgst: float
+    igst: float
+    total_amount: float
+    status: str
+    pdf_url: Optional[str] = None
+    created_at: datetime
+
+# --- Endpoints ---
+
+@router.get("", response_model=List[AdminInvoiceResponse])
+def list_all_invoices(
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    List all generated GST invoices in the system.
+    """
+    invoices = db.query(Invoice).order_by(Invoice.created_at.desc()).all()
+    
+    result = []
+    for inv in invoices:
+        cust_email = None
+        customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == inv.customer_id).first()
+        if customer:
+            cust_email = customer.email
+            
+        pdf_url = f"/api/v1/admin/invoices/{inv.invoice_id}/download"
+        
+        result.append(
+            AdminInvoiceResponse(
+                invoice_id=inv.invoice_id,
+                invoice_no=inv.invoice_no,
+                order_id=inv.order_id,
+                customer_id=inv.customer_id,
+                customer_email=cust_email,
+                subtotal=float(inv.subtotal),
+                discount_amount=float(inv.discount_amount),
+                cgst=float(inv.cgst),
+                sgst=float(inv.sgst),
+                igst=float(inv.igst),
+                total_amount=float(inv.total_amount),
+                status=inv.status,
+                pdf_url=pdf_url,
+                created_at=inv.created_at
+            )
+        )
+    return result
+
+@router.post("/generate/{order_id}", response_model=AdminInvoiceResponse)
+def generate_invoice_for_order(
+    order_id: str,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    Generate a new GST invoice for a confirmed order.
+    """
+    # Check if invoice already exists
+    existing = db.query(Invoice).filter(Invoice.order_id == order_id).first()
+    if existing:
+        cust_email = None
+        customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == existing.customer_id).first()
+        if customer:
+            cust_email = customer.email
+        return AdminInvoiceResponse(
+            invoice_id=existing.invoice_id,
+            invoice_no=existing.invoice_no,
+            order_id=existing.order_id,
+            customer_id=existing.customer_id,
+            customer_email=cust_email,
+            subtotal=float(existing.subtotal),
+            discount_amount=float(existing.discount_amount),
+            cgst=float(existing.cgst),
+            sgst=float(existing.sgst),
+            igst=float(existing.igst),
+            total_amount=float(existing.total_amount),
+            status=existing.status,
+            pdf_url=f"/api/v1/admin/invoices/{existing.invoice_id}/download",
+            created_at=existing.created_at
+        )
+
+    # Fetch order details
+    order = db.query(Order).filter(Order.order_id == order_id).first()
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Order not found"
+        )
+
+    # GST calculation matching order details
+    subtotal = float(order.total_amount)
+    discount = float(order.discount_amount)
+    tax_amount = float(order.tax_amount)
+    cgst = round(tax_amount / 2, 2)
+    sgst = round(tax_amount / 2, 2)
+    igst = 0.0
+    total = float(order.final_amount)
+
+    # Allocate a 16-char GST invoice number
+    # Format: C1P2-26-SEQ
+    today = datetime.now()
+    fy = today.strftime("%y") # financial year seq, e.g. 26
+    last_inv = db.query(Invoice).order_by(Invoice.created_at.desc()).first()
+    if not last_inv:
+        seq = 1
+    else:
+        try:
+            seq = int(last_inv.invoice_no.split("-")[-1]) + 1
+        except Exception:
+            seq = 1
+    invoice_no = f"C1P1-{fy}-{seq:06d}"
+
+    invoice = Invoice(
+        invoice_id=str(ulid.ULID()),
+        invoice_no=invoice_no,
+        order_id=order.order_id,
+        customer_id=order.customer_id,
+        subtotal=subtotal,
+        discount_amount=discount,
+        cgst=cgst,
+        sgst=sgst,
+        igst=igst,
+        total_amount=total,
+        pdf_path=f"uploads/invoices/{invoice_no}.pdf" # virtual pointer path
+    )
+    db.add(invoice)
+    db.commit()
+    db.refresh(invoice)
+
+    cust_email = None
+    if order.customer:
+        cust_email = order.customer.email
+
+    return AdminInvoiceResponse(
+        invoice_id=invoice.invoice_id,
+        invoice_no=invoice.invoice_no,
+        order_id=invoice.order_id,
+        customer_id=invoice.customer_id,
+        customer_email=cust_email,
+        subtotal=float(invoice.subtotal),
+        discount_amount=float(invoice.discount_amount),
+        cgst=float(invoice.cgst),
+        sgst=float(invoice.sgst),
+        igst=float(invoice.igst),
+        total_amount=float(invoice.total_amount),
+        status=invoice.status,
+        pdf_url=f"/api/v1/admin/invoices/{invoice.invoice_id}/download",
+        created_at=invoice.created_at
+    )
+
+@router.get("/{invoice_id}/download")
+def download_invoice_pdf(
+    invoice_id: str,
+    db: Session = Depends(get_db)
+):
+    """
+    Generate and serve standard Letter-sized PDF GST Invoice on-the-fly.
+    """
+    invoice = db.query(Invoice).filter(Invoice.invoice_id == invoice_id).first()
+    if not invoice:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Invoice not found"
+        )
+
+    order = db.query(Order).filter(Order.order_id == invoice.order_id).first()
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Sales order record missing, cannot generate PDF invoice"
+        )
+
+    customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == invoice.customer_id).first()
+    order_items = db.query(OrderItem).filter(OrderItem.order_id == invoice.order_id).all()
+
+    try:
+        pdf_bytes = generate_invoice_pdf(order, customer, order_items, db=db)
+        return Response(
+            content=pdf_bytes,
+            media_type="application/pdf",
+            headers={"Content-Disposition": f"inline; filename={invoice.invoice_no}.pdf"}
+        )
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to compile PDF on-the-fly: {str(e)}"
+        )
+
+@router.get("/{invoice_id}/thermal-download")
+def download_thermal_invoice_pdf(
+    invoice_id: str,
+    db: Session = Depends(get_db)
+):
+    """
+    Generate and serve compact 80mm thermal receipt PDF on-the-fly.
+    """
+    invoice = db.query(Invoice).filter(Invoice.invoice_id == invoice_id).first()
+    if not invoice:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Invoice not found"
+        )
+
+    order = db.query(Order).filter(Order.order_id == invoice.order_id).first()
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Sales order record missing, cannot generate PDF invoice"
+        )
+
+    customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == invoice.customer_id).first()
+    order_items = db.query(OrderItem).filter(OrderItem.order_id == invoice.order_id).all()
+
+    try:
+        pdf_bytes = generate_thermal_invoice_pdf(order, customer, order_items)
+        return Response(
+            content=pdf_bytes,
+            media_type="application/pdf",
+            headers={"Content-Disposition": f"inline; filename=thermal_{invoice.invoice_no}.pdf"}
+        )
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to compile thermal receipt PDF: {str(e)}"
+        )
+
+@router.get("/export/excel")
+def export_invoices_excel(
+    start_date: Optional[str] = None,
+    end_date: Optional[str] = None,
+    db: Session = Depends(get_db)
+):
+    invoices = db.query(Invoice).order_by(Invoice.created_at.desc()).all()
+    csv_data = "Invoice No,Order ID,Customer ID,Subtotal,CGST,SGST,Total Amount,Created At\n"
+    for inv in invoices:
+        csv_data += f"{inv.invoice_no},{inv.order_id},{inv.customer_id},{inv.subtotal},{inv.cgst},{inv.sgst},{inv.total_amount},{inv.created_at}\n"
+    
+    return Response(
+        content=csv_data,
+        media_type="text/csv",
+        headers={"Content-Disposition": "attachment; filename=invoices_export.csv"}
+    )
+
+@router.get("/export/zip")
+def export_invoices_zip(
+    start_date: Optional[str] = None,
+    end_date: Optional[str] = None,
+    db: Session = Depends(get_db)
+):
+    invoices = db.query(Invoice).order_by(Invoice.created_at.desc()).all()
+    
+    zip_buffer = io.BytesIO()
+    with zipfile.ZipFile(zip_buffer, "w", zipfile.ZIP_DEFLATED) as zip_file:
+        summary = "Invoice No,Order ID,Customer ID,Total Amount\n"
+        for inv in invoices:
+            summary += f"{inv.invoice_no},{inv.order_id},{inv.customer_id},{inv.total_amount}\n"
+        zip_file.writestr("summary.csv", summary)
+        zip_file.writestr("read_me.txt", "Sassynest CRM invoice bulk dump package.")
+        
+    zip_buffer.seek(0)
+    return Response(
+        content=zip_buffer.getvalue(),
+        media_type="application/zip",
+        headers={"Content-Disposition": "attachment; filename=invoices_export.zip"}
+    )

Backend/app/api/v1/routers/AdminOrderRouter.py

@@ -0,0 +1,353 @@
+"""
+@router AdminOrderRouter (Backend/app/api/v1/routers/AdminOrderRouter.py)
+@purpose CRM Admin endpoint controllers to search, view, and modify storefront customer orders and trigger status transitions.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from pydantic import BaseModel
+from typing import List, Optional
+from datetime import datetime
+import ulid
+import json
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import get_current_user
+from app.models.UserModel import User
+from app.models.OrderModel import Order, OrderItem, OrderStatusHistory
+from app.models.EcomCustomerModel import EcomCustomer
+from app.services.InventoryService import record_ledger_entry
+from app.models.InventoryLedgerModel import InventoryLedger
+from app.models.InvoiceModel import Invoice
+from app.models.ProductModel import ProductVariant
+
+router = APIRouter(prefix="/api/v1/admin/orders", tags=["Admin CRM Customer Orders"])
+
+# --- Schemas ---
+
+class OrderItemDetail(BaseModel):
+    product_id: str
+    variant_id: str
+    product_name: str
+    sku: str
+    unit_price: float
+    quantity: int
+    total_price: float
+
+class StatusHistorySchema(BaseModel):
+    previous_status: Optional[str]
+    new_status: str
+    changed_by: str
+    reason: Optional[str]
+    created_at: datetime
+
+class AdminOrderDetailResponse(BaseModel):
+    order_id: str
+    order_no: str
+    customer_id: Optional[str]
+    customer_email: Optional[str] = None
+    customer_name: Optional[str] = None
+    total_amount: float
+    discount_amount: float
+    tax_amount: float
+    shipping_cost: float
+    final_amount: float
+    status: str
+    payment_status: str
+    fulfillment_status: str
+    shipping_address_json: Optional[str] = None
+    billing_address_json: Optional[str] = None
+    tracking_number: Optional[str] = None
+    courier_name: Optional[str] = None
+    created_at: datetime
+    items: List[OrderItemDetail]
+    history: List[StatusHistorySchema]
+
+class AdminOrderListResponse(BaseModel):
+    order_id: str
+    order_no: str
+    customer_email: Optional[str] = None
+    customer_name: Optional[str] = None
+    customer_phone: Optional[str] = None
+    final_amount: float
+    status: str
+    payment_status: str
+    created_at: datetime
+
+class StatusUpdatePayload(BaseModel):
+    status: str
+    tracking_number: Optional[str] = None
+    courier_name: Optional[str] = None
+    reason: Optional[str] = None
+
+# --- Endpoints ---
+
+@router.get("", response_model=List[AdminOrderListResponse])
+def list_all_orders(
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    List all customer orders in the system.
+    """
+    orders = db.query(Order).order_by(Order.created_at.desc()).all()
+    
+    result = []
+    for o in orders:
+        cust_email = None
+        cust_name = None
+        cust_phone = None
+        if o.customer:
+            cust_email = o.customer.email
+            cust_name = f"{o.customer.first_name} {o.customer.last_name}".strip()
+            cust_phone = o.customer.phone
+        elif o.shipping_address_json or o.billing_address_json:
+            try:
+                addr = json.loads(o.shipping_address_json or o.billing_address_json or "{}")
+                cust_name = addr.get("full_name") or addr.get("name")
+                cust_phone = addr.get("phone")
+                cust_email = addr.get("email")
+            except Exception:
+                pass
+            
+        result.append(
+            AdminOrderListResponse(
+                order_id=o.order_id,
+                order_no=o.order_no,
+                customer_email=cust_email or "N/A",
+                customer_name=cust_name or "Walk-in Guest",
+                customer_phone=cust_phone or "N/A",
+                final_amount=float(o.final_amount),
+                status=o.status,
+                payment_status=o.payment_status,
+                created_at=o.created_at
+            )
+        )
+    return result
+
+@router.get("/{order_id}", response_model=AdminOrderDetailResponse)
+def get_order_details(
+    order_id: str,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    Retrieve full details for any order including items, customer metadata, and status logs.
+    """
+    order = db.query(Order).filter(Order.order_id == order_id).first()
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Order not found"
+        )
+        
+    cust_email = None
+    cust_name = None
+    if order.customer:
+        cust_email = order.customer.email
+        cust_name = f"{order.customer.first_name} {order.customer.last_name}"
+
+    return AdminOrderDetailResponse(
+        order_id=order.order_id,
+        order_no=order.order_no,
+        customer_id=order.customer_id,
+        customer_email=cust_email,
+        customer_name=cust_name,
+        total_amount=float(order.total_amount),
+        discount_amount=float(order.discount_amount),
+        tax_amount=float(order.tax_amount),
+        shipping_cost=float(order.shipping_cost),
+        final_amount=float(order.final_amount),
+        status=order.status,
+        payment_status=order.payment_status,
+        fulfillment_status=order.fulfillment_status,
+        shipping_address_json=order.shipping_address_json,
+        billing_address_json=order.billing_address_json,
+        tracking_number=order.tracking_number,
+        courier_name=order.courier_name,
+        created_at=order.created_at,
+        items=[
+            OrderItemDetail(
+                product_id=item.product_id,
+                variant_id=item.variant_id,
+                product_name=item.product_name,
+                sku=item.sku,
+                unit_price=float(item.unit_price),
+                quantity=item.quantity,
+                total_price=float(item.total_price)
+            ) for item in order.items
+        ],
+        history=[
+            StatusHistorySchema(
+                previous_status=h.previous_status,
+                new_status=h.new_status,
+                changed_by=h.changed_by,
+                reason=h.reason,
+                created_at=h.created_at
+            ) for h in order.history
+        ]
+    )
+
+@router.put("/{order_id}/status")
+def update_order_status(
+    order_id: str,
+    payload: StatusUpdatePayload,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    Transition an order status, record timeline logs, write ledger confirmations/releases, and update tracking coordinates.
+    """
+    order = db.query(Order).filter(Order.order_id == order_id).first()
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Order not found"
+        )
+
+    previous_status = order.status
+    new_status = payload.status
+
+    # Transition tracking info if provided
+    if payload.tracking_number:
+        order.tracking_number = payload.tracking_number
+    if payload.courier_name:
+        order.courier_name = payload.courier_name
+
+    # Set fulfillment status flags
+    if new_status in ["SHIPPED", "DELIVERED"]:
+        order.fulfillment_status = "FULFILLED"
+    elif new_status == "CANCELLED":
+        order.fulfillment_status = "CANCELLED"
+
+    # --- STOCK CONFIRMATION / RELEASE LOGIC ---
+    
+    # 1. Transition: ORDER_CREATED/PAYMENT_PENDING -> ORDER_CONFIRMED/PROCESSING/SHIPPED/DELIVERED
+    if new_status in ["ORDER_CONFIRMED", "PROCESSING", "SHIPPED", "DELIVERED"] and previous_status in ["ORDER_CREATED", "PAYMENT_PENDING"]:
+        # Record the physical sale transition in the ledger by subtracting quantity
+        for item in order.items:
+            record_ledger_entry(
+                variant_id=item.variant_id,
+                event_type="ONLINE_SALE_FROM_RESERVATION",
+                qty=-item.quantity, # Deduct stock upon confirmation
+                reference_id=order.order_id,
+                db=db,
+                notes=f"Physical stock sale confirmed from reservation for order {order.order_no}",
+                commit=False,
+            )
+        order.payment_status = "PAYMENT_CAPTURED"
+ 
+    # 2. Transition: Active -> CANCELLED
+    elif new_status == "CANCELLED" and previous_status != "CANCELLED":
+        # Check if the order was already confirmed
+        was_confirmed = db.query(InventoryLedger).filter(
+            InventoryLedger.reference_id == order.order_id,
+            InventoryLedger.event_type == "ONLINE_SALE_FROM_RESERVATION"
+        ).first() is not None
+
+        # Check return eligibility: eligible if never delivered, or delivered within last 6 days
+        can_restore = True
+        if previous_status == "DELIVERED":
+            del_history = db.query(OrderStatusHistory).filter(
+                OrderStatusHistory.order_id == order.order_id,
+                OrderStatusHistory.new_status == "DELIVERED"
+            ).order_by(OrderStatusHistory.created_at.desc()).first()
+            del_time = del_history.created_at if del_history else order.updated_at
+            
+            from datetime import datetime
+            now = datetime.now(del_time.tzinfo) if del_time.tzinfo else datetime.now()
+            delta = now - del_time
+            if delta.days >= 6:
+                can_restore = False
+
+        for item in order.items:
+            if was_confirmed:
+                if can_restore:
+                    # Record RETURN (+qty) to restore physical and available stock if within 6 days
+                    record_ledger_entry(
+                        variant_id=item.variant_id,
+                        event_type="RETURN",
+                        qty=item.quantity,
+                        reference_id=order.order_id,
+                        db=db,
+                        notes=f"Restored stock from cancelled confirmed order {order.order_no} within 6-day window",
+                        commit=False,
+                    )
+                else:
+                    # Beyond 6 days, do not restore stock (write 0 delta)
+                    record_ledger_entry(
+                        variant_id=item.variant_id,
+                        event_type="RETURN",
+                        qty=0,
+                        reference_id=order.order_id,
+                        db=db,
+                        notes=f"Stock not restored: returned order {order.order_no} was past 6-day return window",
+                        commit=False,
+                    )
+            else:
+                # If not confirmed yet, release the ONLINE_RESERVE reservation (qty=0)
+                record_ledger_entry(
+                    variant_id=item.variant_id,
+                    event_type="ONLINE_RESERVE_RELEASE",
+                    qty=0,
+                    reference_id=order.order_id,
+                    db=db,
+                    notes=f"Released reservation for cancelled order {order.order_no}",
+                    commit=False,
+                )
+        order.payment_status = "REFUNDED" if order.payment_status == "PAYMENT_CAPTURED" else "PAYMENT_FAILED"
+
+    # Add change log
+    history = OrderStatusHistory(
+        history_id=str(ulid.ULID()),
+        order_id=order.order_id,
+        previous_status=previous_status,
+        new_status=new_status,
+        changed_by=current_user.email,
+        reason=payload.reason or "Status updated via CRM Admin Panel"
+    )
+    db.add(history)
+
+    # Set status
+    order.status = new_status
+    db.commit()
+
+    return {"message": "Order status updated successfully", "order_id": order_id, "new_status": order.status}
+
+# --- Manual Order Creation Schemas ---
+
+class AdminOrderCreateItem(BaseModel):
+    variant_id: str
+    quantity: int
+    unit_price: float
+
+class AdminOrderCreateRequest(BaseModel):
+    customer_name: Optional[str] = None
+    customer_email: Optional[str] = None
+    customer_phone: Optional[str] = None
+    items: List[AdminOrderCreateItem]
+    shipping_address: Optional[str] = None
+    payment_status: str = "PAID"
+    payment_method: str = "CASH"
+
+@router.post("/create")
+def create_admin_order(
+    payload: AdminOrderCreateRequest,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    """
+    Directly write a manual/offline store walk-in counter order and auto-generate its GST invoice.
+    """
+    from app.services.OrderService import OrderService
+    items_dicts = [item.dict() for item in payload.items]
+    return OrderService.create_walk_in_order(
+        db=db,
+        items_payload=items_dicts,
+        customer_name=payload.customer_name,
+        customer_email=payload.customer_email,
+        customer_phone=payload.customer_phone,
+        shipping_address=payload.shipping_address,
+        payment_status=payload.payment_status or "PAID",
+        payment_method=payload.payment_method or "CASH",
+        actor_email=current_user.email
+    )

Backend/app/api/v1/routers/AdminSecurityRouter.py

@@ -0,0 +1,379 @@
+import logging
+from fastapi import APIRouter, Depends, HTTPException, Request, Response, status
+from pydantic import BaseModel
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+from datetime import datetime, timezone
+import ulid
+
+logger = logging.getLogger(__name__)
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import get_current_user, RoleChecker
+from app.models.UserModel import User
+from app.models.UserSessionModel import UserSession
+from app.models.AuditLogModel import AuditLog
+from app.repositories.setting_repository import setting_repository
+from app.repositories.user_repository import user_repository
+from app.services.audit_service import audit_service
+from app.utils.Mfa_util import verify_mfa_token
+
+router = APIRouter(prefix="/api/v1/admin", tags=["Admin Control & Infrastructure"])
+
+MASTER_ADMIN_EMAILS = {"adithiyan.elan@gmail.com", "admin@ifixkart.com"}
+
+def get_client_ip(request: Request) -> str:
+    x_forwarded_for = request.headers.get("x-forwarded-for")
+    if x_forwarded_for:
+        return x_forwarded_for.split(",")[0].strip()
+    return request.client.host if request.client else "127.0.0.1"
+
+@router.post("/request_kill_switch")
+def request_kill_switch(
+    approver_id: str,
+    mfa_code: str,
+    request: Request,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    admin = user_repository.get_by_id(db, approver_id)
+    if not admin:
+        raise HTTPException(status_code=404, detail="Admin not found")
+
+    if admin.email not in MASTER_ADMIN_EMAILS:
+        raise HTTPException(status_code=403, detail="Only Master Admin can trigger the kill switch")
+
+    if not admin.mfa_enabled or not verify_mfa_token(admin.mfa_secret, mfa_code):
+        raise HTTPException(status_code=403, detail="Invalid MFA verification code")
+
+    # 1. Update setting key 'GLOBAL_DISABLE' to enabled=True
+    setting = setting_repository.get_by_key(db, "GLOBAL_DISABLE")
+    if setting:
+        setting.setting_value = {"enabled": True, "triggered_by": admin.email, "timestamp": str(datetime.now(timezone.utc))}
+    db.commit()
+
+    # 2. Destroy all active user sessions (Self-Destruct active logins)
+    db.query(UserSession).update({UserSession.is_active: False})
+    db.commit()
+
+    # 3. Log event
+    ip_address = get_client_ip(request)
+    user_agent = request.headers.get("user-agent", "")
+    req_id = getattr(request.state, "request_id", "unknown")
+    audit_service.log_change(
+        db=db,
+        request_id=req_id,
+        user_id=admin.user_id,
+        entity_type="SystemSetting",
+        entity_id="GLOBAL_DISABLE",
+        action="kill_switch_executed",
+        old_value={"enabled": False},
+        new_value={"enabled": True},
+        ip_address=ip_address,
+        user_agent=user_agent
+    )
+
+    return {"detail": "Kill switch executed. All user sessions have been terminated."}
+
+@router.post("/self_destruct")
+def self_destruct(
+    admin_id: str,
+    mfa_code: str,
+    request: Request,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    admin = user_repository.get_by_id(db, admin_id)
+    if not admin:
+        raise HTTPException(status_code=404, detail="Admin not found")
+
+    if admin.email not in MASTER_ADMIN_EMAILS:
+        raise HTTPException(status_code=403, detail="Only Master Admin can force self-destruct")
+
+    if not admin.mfa_enabled or not verify_mfa_token(admin.mfa_secret, mfa_code):
+        raise HTTPException(status_code=403, detail="Invalid MFA verification code")
+
+    # 1. Terminate all sessions
+    db.query(UserSession).update({UserSession.is_active: False})
+    db.commit()
+
+    # 2. Log event
+    ip_address = get_client_ip(request)
+    user_agent = request.headers.get("user-agent", "")
+    req_id = getattr(request.state, "request_id", "unknown")
+    audit_service.log_change(
+        db=db,
+        request_id=req_id,
+        user_id=admin.user_id,
+        entity_type="Sessions",
+        entity_id="All",
+        action="self_destruct_sessions",
+        old_value=None,
+        new_value={"sessions_terminated": True},
+        ip_address=ip_address,
+        user_agent=user_agent
+    )
+
+    return {"detail": "All sessions destroyed successfully."}
+
+@router.post("/cancel_kill_switch")
+def cancel_kill_switch(
+    admin_id: str,
+    request: Request,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    admin = user_repository.get_by_id(db, admin_id)
+    if not admin:
+        raise HTTPException(status_code=404, detail="Admin not found")
+
+    if admin.email not in MASTER_ADMIN_EMAILS:
+        raise HTTPException(status_code=403, detail="Only Master Admin can cancel the kill switch")
+
+    # 1. Set GLOBAL_DISABLE to False
+    setting = setting_repository.get_by_key(db, "GLOBAL_DISABLE")
+    if setting:
+        setting.setting_value = {"enabled": False}
+    db.commit()
+
+    # 2. Log event
+    ip_address = get_client_ip(request)
+    user_agent = request.headers.get("user-agent", "")
+    req_id = getattr(request.state, "request_id", "unknown")
+    audit_service.log_change(
+        db=db,
+        request_id=req_id,
+        user_id=admin.user_id,
+        entity_type="SystemSetting",
+        entity_id="GLOBAL_DISABLE",
+        action="kill_switch_cancelled",
+        old_value={"enabled": True},
+        new_value={"enabled": False},
+        ip_address=ip_address,
+        user_agent=user_agent
+    )
+
+    return {"detail": "Kill switch cancelled. Standard user access restored."}
+
+@router.get("/list_sessions")
+def list_sessions(
+    skip: int = 0,
+    limit: int = 100,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    sessions = db.query(UserSession).offset(skip).limit(limit).all()
+    return {
+        "sessions": [
+            {
+                "session_id": s.session_id,
+                "user_id": s.user_id,
+                "device_name": s.device_name,
+                "device_type": s.device_type,
+                "browser": s.browser,
+                "operating_system": s.operating_system,
+                "ip_address": s.ip_address,
+                "expires_at": s.expires_at,
+                "is_active": s.is_active
+            }
+            for s in sessions
+        ]
+    }
+
+@router.post("/revoke_session")
+def revoke_session(
+    session_id: str,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    session = db.get(UserSession, session_id)
+    if not session:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    session.is_active = False
+    db.commit()
+    return {"detail": f"Session {session_id} has been revoked successfully."}
+
+@router.get("/failed-logins")
+def get_failed_logins(
+    limit: int = 10,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    failed_attempts = (
+        db.query(AuditLog)
+        .filter(AuditLog.action == "failed_login")
+        .order_by(AuditLog.created_at.desc())
+        .limit(limit)
+        .all()
+    )
+    return failed_attempts
+
+@router.get("/audit-logs")
+def get_all_audit_logs(
+    limit: int = 100,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    """
+    Retrieve dynamic audit logs across all users and modules for ERP Activity Monitor.
+    """
+    from app.models.UserModel import User as DbUser
+    results = (
+        db.query(AuditLog, DbUser)
+        .outerjoin(DbUser, AuditLog.user_id == DbUser.user_id)
+        .order_by(AuditLog.created_at.desc())
+        .limit(limit)
+        .all()
+    )
+    
+    output = []
+    for log, user in results:
+        user_info = None
+        if user:
+            user_info = {
+                "name": f"{user.first_name} {user.last_name}",
+                "avatarInitials": f"{user.first_name[0].upper() if user.first_name else ''}{user.last_name[0].upper() if user.last_name else ''}"
+            }
+        else:
+            user_info = {
+                "name": "System / Guest",
+                "avatarInitials": "SYS"
+            }
+            
+        output.append({
+            "audit_id": log.audit_id,
+            "request_id": log.request_id,
+            "user_id": log.user_id,
+            "entity_type": log.entity_type,
+            "entity_id": log.entity_id,
+            "action": log.action,
+            "old_value": log.old_value,
+            "new_value": log.new_value,
+            "ip_address": log.ip_address,
+            "user_agent": log.user_agent,
+            "created_at": log.created_at.isoformat() if log.created_at else None,
+            "user": user_info
+        })
+    return output
+
+# --- Media Storage & Factory Reset Endpoints ---
+from app.utils.Hash_util import verify_password
+from app.core.database.init_db import initialize_database, Base, engine_core, engine_crm, engine_commerce
+from app.models.SettingModel import Setting
+import shutil
+from pathlib import Path
+
+BACKEND_ROOT = Path(__file__).resolve().parents[4]
+UPLOADS_DIR = BACKEND_ROOT / "uploads"
+
+@router.get("/media-settings")
+def get_media_settings_admin(
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    keys = ["media_store_original", "media_max_size_mb", "media_webp_quality", "media_cleanup_enabled", "media_cleanup_grace_hours"]
+    settings = {}
+    rows = db.execute(select(Setting).where(Setting.setting_key.in_(keys))).scalars().all()
+    for r in rows:
+        val = r.setting_value
+        if isinstance(val, dict) and "value" in val:
+            val = val["value"]
+        settings[r.setting_key] = val
+    return settings
+
+@router.post("/media-settings")
+def update_media_settings_admin(
+    payload: dict,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    keys = ["media_store_original", "media_max_size_mb", "media_webp_quality", "media_cleanup_enabled", "media_cleanup_grace_hours"]
+    for k in keys:
+        if k in payload:
+            setting = db.execute(select(Setting).where(Setting.setting_key == k)).scalar_one_or_none()
+            if not setting:
+                setting = Setting(
+                    setting_id=str(ulid.ULID()),
+                    setting_key=k,
+                    group="media",
+                    type="json",
+                    setting_value={"value": payload[k]},
+                    description=f"Media policy setting: {k}",
+                    is_public=False
+                )
+                db.add(setting)
+            else:
+                setting.setting_value = {"value": payload[k]}
+    db.commit()
+    return {"detail": "Media settings updated successfully"}
+
+class FactoryResetRequest(BaseModel):
+    password: str
+    confirmation_phrase: str
+
+@router.post("/security/factory-reset")
+def platform_factory_reset(
+    payload: FactoryResetRequest,
+    request: Request,
+    current_user: User = Depends(RoleChecker(["Super Admin"])),
+    db: Session = Depends(get_db)
+):
+    password = payload.password
+    confirmation_phrase = payload.confirmation_phrase
+
+    if not verify_password(password, current_user.password_hash):
+        raise HTTPException(status_code=403, detail="Invalid Super Admin password verification")
+
+    if confirmation_phrase != "CONFIRM_FACTORY_RESET_WIPE_2026":
+        raise HTTPException(status_code=400, detail="Invalid confirmation phrase. Type 'CONFIRM_FACTORY_RESET_WIPE_2026' to proceed.")
+
+    logger.warning(f"CRITICAL: Super Admin {current_user.email} triggered platform factory reset!")
+
+    # 1. Physical Media Uploads Wipe (Preserve folder structure)
+    try:
+        if UPLOADS_DIR.exists():
+            for item in UPLOADS_DIR.iterdir():
+                if item.is_dir():
+                    shutil.rmtree(item, ignore_errors=True)
+                    item.mkdir(parents=True, exist_ok=True)
+                else:
+                    item.unlink(missing_ok=True)
+        UPLOADS_DIR.mkdir(parents=True, exist_ok=True)
+        (UPLOADS_DIR / "raw").mkdir(parents=True, exist_ok=True)
+    except Exception as err:
+        logger.error(f"Error purging physical media directory: {err}")
+
+    # 2. Database Fast Truncate & Re-initialization
+    try:
+        db.close()
+        from sqlalchemy import text
+
+        for eng in [engine_commerce, engine_crm, engine_core]:
+            with eng.connect() as conn:
+                conn.execute(text("SET FOREIGN_KEY_CHECKS = 0;"))
+                tables = conn.execute(text("SHOW TABLES;")).fetchall()
+                for tbl in tables:
+                    tbl_name = tbl[0]
+                    try:
+                        conn.execute(text(f"TRUNCATE TABLE `{tbl_name}`;"))
+                    except Exception:
+                        try:
+                            conn.execute(text(f"DELETE FROM `{tbl_name}`;"))
+                        except Exception:
+                            pass
+                conn.execute(text("SET FOREIGN_KEY_CHECKS = 1;"))
+                conn.commit()
+
+        from app.core.database.init_db import initialize_database
+        initialize_database()
+    except Exception as err:
+        logger.error(f"Factory reset DB wipe error: {err}")
+        raise HTTPException(status_code=500, detail=f"Factory reset DB wipe failed: {str(err)}")
+
+    return {
+        "status": "success",
+        "detail": "Platform factory reset completed successfully. All database tables and physical uploads have been wiped, and pristine master data has been re-seeded.",
+        "timestamp": datetime.utcnow().isoformat()
+    }
+

Backend/app/api/v1/routers/AuthenticationRouter.py

@@ -0,0 +1,275 @@
+from fastapi import APIRouter, Depends, HTTPException, Response, Request, Cookie, status
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+from datetime import datetime, timedelta, timezone
+import random
+import time
+from user_agents import parse
+import ulid
+
+from app.core.database.db_session import get_db
+from app.core.config.Config import settings
+from app.core.Token import create_access_token
+from app.utils.Hash_util import hash_password, verify_password
+from app.repositories.user_repository import user_repository
+from app.repositories.session_repository import session_repository
+from app.models.UserSessionModel import UserSession
+from app.schemas.Auth import LoginSchema, TokenResponseSchema
+from app.core.validators.password_validator import validate_password_complexity
+
+router = APIRouter(prefix="/api/v1/auth", tags=["Authentication"])
+
+def get_client_ip(request: Request) -> str:
+    # Read forwarded headers or default to client host
+    x_forwarded_for = request.headers.get("x-forwarded-for")
+    if x_forwarded_for:
+        return x_forwarded_for.split(",")[0].strip()
+    return request.client.host if request.client else "127.0.0.1"
+
+@router.post("/login", response_model=TokenResponseSchema)
+def login(
+    data: LoginSchema,
+    response: Response,
+    request: Request,
+    db: Session = Depends(get_db)
+):
+    user = user_repository.get_by_email(db, data.email)
+    
+    # 1. Lockout & Verification checks
+    if not user:
+        raise HTTPException(status_code=401, detail="Invalid credentials")
+
+    if user.is_locked and user.deleted_at is None:
+        # Check if lockout period has expired (15 minutes)
+        # We can implement a lockout expiry check, but for simplicity, check last update time
+        # if 15 mins passed, unlock:
+        # For security, let's keep it locked until reset_password confirms, or 15 mins pass
+        # Since we lock dynamically, let's look at the DB fields:
+        # user has is_locked. Let's write a clean time-locked query if needed,
+        # or require password reset as configured.
+        raise HTTPException(status_code=403, detail="Account locked. Please reset password to unlock.")
+
+    if not verify_password(data.password, user.password_hash):
+        user.failed_login_attempts += 1
+        if user.failed_login_attempts >= settings.MAX_FAILED_LOGIN:
+            user.is_locked = True
+            db.commit()
+            raise HTTPException(status_code=403, detail="Account locked due to too many failed attempts.")
+        db.commit()
+        raise HTTPException(status_code=401, detail="Invalid credentials")
+
+    # 2. Reset failed attempts count
+    user.failed_login_attempts = 0
+    user.is_locked = False
+    user.last_login = datetime.now(timezone.utc)
+    db.commit()
+
+    # 3. Generate tokens
+    access_token = create_access_token(user.user_id, user.email, user.role.role_name)
+    raw_refresh = str(ulid.ULID())
+
+    # 4. Extract device metadata
+    ua_string = request.headers.get("user-agent", "")
+    ua = parse(ua_string)
+    
+    device_type = "Desktop"
+    if ua.is_mobile:
+        device_type = "Mobile"
+    elif ua.is_tablet:
+        device_type = "Tablet"
+        
+    os_name = f"{ua.os.family} {ua.os.version_string}".strip()
+    browser_name = f"{ua.browser.family} {ua.browser.version_string}".strip()
+
+    # 5. Save session
+    session_id = str(ulid.ULID())
+    session_entry = UserSession(
+        session_id=session_id,
+        user_id=user.user_id,
+        device_name=ua.device.family or "Unknown",
+        device_type=device_type,
+        browser=browser_name,
+        operating_system=os_name,
+        ip_address=get_client_ip(request),
+        latitude=data.latitude,
+        longitude=data.longitude,
+        location_name=data.location_name,
+        device_fingerprint=data.device_fingerprint,
+        refresh_token=raw_refresh,
+        access_token_id=session_id,  # Match token references
+        expires_at=datetime.now(timezone.utc) + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS),
+        is_active=True
+    )
+    
+    db.add(session_entry)
+    db.commit()
+
+    # 6. Set response cookie and header
+    response.set_cookie(
+        "refresh_token",
+        raw_refresh,
+        httponly=True,
+        secure=True,
+        samesite="none"
+    )
+    response.headers["X-User-Email"] = user.email
+
+    return {
+        "access_token": access_token,
+        "refresh_token": raw_refresh,
+        "token_type": "bearer"
+    }
+
+@router.post("/refresh", response_model=TokenResponseSchema)
+def refresh(
+    response: Response,
+    refresh_token: str = Cookie(None),
+    db: Session = Depends(get_db)
+):
+    if not refresh_token:
+        raise HTTPException(status_code=401, detail="Missing refresh token")
+
+    session = session_repository.get_by_refresh_token(db, refresh_token)
+    if not session or session.expires_at.replace(tzinfo=timezone.utc) < datetime.now(timezone.utc):
+        if session:
+            session.is_active = False
+            db.commit()
+        raise HTTPException(status_code=401, detail="Invalid or expired refresh token")
+
+    user = user_repository.get_by_id(db, session.user_id)
+    if not user or not user.is_active or user.is_locked:
+        raise HTTPException(status_code=403, detail="User account is inactive or locked")
+
+    # Refresh Token Rotation (RTR): invalidate old token, issue new one
+    new_access = create_access_token(user.user_id, user.email, user.role.role_name)
+    new_refresh = str(ulid.ULID())
+
+    # Deactivate old session
+    session.is_active = False
+    db.commit()
+
+    # Create new session entry carrying over device metadata
+    new_session_id = str(ulid.ULID())
+    new_session = UserSession(
+        session_id=new_session_id,
+        user_id=user.user_id,
+        device_name=session.device_name,
+        device_type=session.device_type,
+        browser=session.browser,
+        operating_system=session.operating_system,
+        ip_address=session.ip_address,
+        latitude=session.latitude,
+        longitude=session.longitude,
+        location_name=session.location_name,
+        device_fingerprint=session.device_fingerprint,
+        refresh_token=new_refresh,
+        access_token_id=new_session_id,
+        expires_at=datetime.now(timezone.utc) + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS),
+        is_active=True
+    )
+    
+    db.add(new_session)
+    db.commit()
+
+    response.set_cookie(
+        "refresh_token",
+        new_refresh,
+        httponly=True,
+        secure=True,
+        samesite="none"
+    )
+
+    return {
+        "access_token": new_access,
+        "refresh_token": new_refresh,
+        "token_type": "bearer"
+    }
+
+@router.post("/logout")
+def logout(
+    response: Response,
+    refresh_token: str = Cookie(None),
+    db: Session = Depends(get_db)
+):
+    if refresh_token:
+        session = session_repository.get_by_refresh_token(db, refresh_token)
+        if session:
+            session.is_active = False
+            db.commit()
+
+    response.delete_cookie("refresh_token", httponly=True, secure=True, samesite="lax")
+    return {"detail": "Logged out successfully"}
+
+@router.post("/token", response_model=TokenResponseSchema)
+def oauth2_token(
+    response: Response,
+    request: Request,
+    form_data: OAuth2PasswordRequestForm = Depends(),
+    db: Session = Depends(get_db)
+):
+    user = user_repository.get_by_email(db, form_data.username)
+    if not user:
+        raise HTTPException(status_code=401, detail="Invalid credentials")
+
+    if user.is_locked and user.deleted_at is None:
+        raise HTTPException(status_code=403, detail="Account locked. Please reset password to unlock.")
+
+    if not verify_password(form_data.password, user.password_hash):
+        user.failed_login_attempts += 1
+        if user.failed_login_attempts >= settings.MAX_FAILED_LOGIN:
+            user.is_locked = True
+            db.commit()
+            raise HTTPException(status_code=403, detail="Account locked due to too many failed attempts.")
+        db.commit()
+        raise HTTPException(status_code=401, detail="Invalid credentials")
+
+    user.failed_login_attempts = 0
+    user.is_locked = False
+    user.last_login = datetime.now(timezone.utc)
+    db.commit()
+
+    access_token = create_access_token(user.user_id, user.email, user.role.role_name)
+    raw_refresh = str(ulid.ULID())
+
+    ua_string = request.headers.get("user-agent", "")
+    ua = parse(ua_string)
+    device_type = "Desktop"
+    if ua.is_mobile:
+        device_type = "Mobile"
+    elif ua.is_tablet:
+        device_type = "Tablet"
+    os_name = f"{ua.os.family} {ua.os.version_string}".strip()
+    browser_name = f"{ua.browser.family} {ua.browser.version_string}".strip()
+
+    session_id = str(ulid.ULID())
+    session_entry = UserSession(
+        session_id=session_id,
+        user_id=user.user_id,
+        device_name=ua.device.family or "Unknown",
+        device_type=device_type,
+        browser=browser_name,
+        operating_system=os_name,
+        ip_address=get_client_ip(request),
+        refresh_token=raw_refresh,
+        access_token_id=session_id,
+        expires_at=datetime.now(timezone.utc) + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS),
+        is_active=True
+    )
+    db.add(session_entry)
+    db.commit()
+
+    response.set_cookie(
+        "refresh_token",
+        raw_refresh,
+        httponly=True,
+        secure=True,
+        samesite="lax"
+    )
+    response.headers["X-User-Email"] = user.email
+
+    return {
+        "access_token": access_token,
+        "refresh_token": raw_refresh,
+        "token_type": "bearer"
+    }
+

Backend/app/api/v1/routers/CartRouter.py

@@ -0,0 +1,273 @@
+"""
+@router CartRouter (Backend/app/api/v1/routers/CartRouter.py)
+@purpose Database-backed shopping cart for authenticated customers (and optional guest visitor_id).
+"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from pydantic import BaseModel
+from typing import List, Optional, Any
+from sqlalchemy.orm import Session
+import ulid
+import json
+
+from app.core.database.db_session import get_db
+from app.api.v1.routers.CustomerProfileRouter import get_current_customer
+from app.models.EcomCustomerModel import EcomCustomer
+from app.models.CartModel import Cart
+from app.models.ProductModel import ProductVariant
+from app.services.InventoryService import get_available_stock
+
+router = APIRouter(prefix="/api/v1/cart", tags=["Shopping Cart"])
+
+
+class CartItemSchema(BaseModel):
+    variant_id: str
+    qty: int
+    unit_price: Optional[float] = None
+    product_name: Optional[str] = None
+    sku: Optional[str] = None
+    total_price: Optional[float] = None
+
+
+class AddToCartRequest(BaseModel):
+    visitor_id: Optional[str] = None
+    variant_id: str
+    qty: int = 1
+
+
+class SetCartItemsRequest(BaseModel):
+    """Replace entire cart contents (used by checkout sync from Zustand)."""
+    items: List[AddToCartRequest]
+
+
+class MergeGuestCartRequest(BaseModel):
+    visitor_id: str
+
+
+def _ensure_stock(db: Session, variant_id: str, requested_qty: int, sku: Optional[str] = None) -> None:
+    available = get_available_stock(variant_id, db)
+    if requested_qty > available:
+        label = sku or variant_id
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Insufficient stock for {label}. Available: {available}, requested: {requested_qty}.",
+        )
+
+
+def _parse_items(raw: Any) -> List[dict]:
+    if raw is None:
+        return []
+    if isinstance(raw, str):
+        try:
+            raw = json.loads(raw)
+        except Exception:
+            return []
+    if not isinstance(raw, list):
+        return []
+    return [i for i in raw if isinstance(i, dict) and i.get("variant_id")]
+
+
+def _get_or_create_customer_cart(db: Session, customer_id: str) -> Cart:
+    cart = db.query(Cart).filter(Cart.customer_id == customer_id).first()
+    if not cart:
+        cart = Cart(
+            cart_id=str(ulid.ULID()),
+            customer_id=customer_id,
+            items_json=[],
+        )
+        db.add(cart)
+        db.flush()
+    return cart
+
+
+def _enrich_and_totals(db: Session, items: List[dict]) -> dict:
+    enriched = []
+    subtotal = 0.0
+    for item in items:
+        variant_id = item.get("variant_id")
+        qty = int(item.get("qty", 1))
+        if qty <= 0:
+            continue
+        variant = db.query(ProductVariant).filter(ProductVariant.variant_id == variant_id).first()
+        if not variant:
+            continue
+        unit_price = float(variant.price)
+        line_total = unit_price * qty
+        subtotal += line_total
+        product_name = variant.product.name if variant.product else "Product"
+        enriched.append({
+            "variant_id": variant_id,
+            "qty": qty,
+            "unit_price": unit_price,
+            "product_name": product_name,
+            "sku": variant.sku,
+            "total_price": round(line_total, 2),
+            "available_stock": get_available_stock(variant_id, db),
+        })
+    tax = round(subtotal * 0.18, 2)
+    shipping = 0.0 if subtotal > 99 else 15.0
+    return {
+        "items": enriched,
+        "subtotal": round(subtotal, 2),
+        "tax": tax,
+        "shipping": shipping,
+        "total_amount": round(subtotal + tax + shipping, 2),
+    }
+
+
+def _upsert_item(items: List[dict], variant_id: str, qty: int, unit_price: float) -> List[dict]:
+    found = False
+    for item in items:
+        if item.get("variant_id") == variant_id:
+            item["qty"] = int(item.get("qty", 0)) + qty
+            item["unit_price"] = unit_price
+            found = True
+            break
+    if not found:
+        items.append({"variant_id": variant_id, "qty": qty, "unit_price": unit_price})
+    return [i for i in items if int(i.get("qty", 0)) > 0]
+
+
+@router.get("")
+def get_cart(
+    visitor_id: Optional[str] = None,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db),
+):
+    """Return the authenticated customer's cart with server-side prices."""
+    cart = db.query(Cart).filter(Cart.customer_id == customer.customer_id).first()
+    if not cart:
+        return {
+            "cart_id": None,
+            "items": [],
+            "subtotal": 0.0,
+            "tax": 0.0,
+            "shipping": 0.0,
+            "total_amount": 0.0,
+        }
+    totals = _enrich_and_totals(db, _parse_items(cart.items_json))
+    return {
+        "cart_id": cart.cart_id,
+        **totals,
+    }
+
+
+@router.post("/items")
+def add_to_cart(
+    payload: AddToCartRequest,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db),
+):
+    """Add or increment a variant in the customer cart."""
+    if payload.qty <= 0:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Quantity must be positive")
+
+    variant = db.query(ProductVariant).filter(ProductVariant.variant_id == payload.variant_id).first()
+    if not variant:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Variant not found")
+
+    cart = _get_or_create_customer_cart(db, customer.customer_id)
+    items = _parse_items(cart.items_json)
+    current_qty = sum(int(i.get("qty", 0)) for i in items if i.get("variant_id") == payload.variant_id)
+    _ensure_stock(db, payload.variant_id, current_qty + payload.qty, variant.sku)
+    items = _upsert_item(items, payload.variant_id, payload.qty, float(variant.price))
+    cart.items_json = items
+    db.commit()
+    db.refresh(cart)
+
+    totals = _enrich_and_totals(db, items)
+    return {"message": "Item added to cart", "cart_id": cart.cart_id, **totals}
+
+
+@router.put("/items")
+def set_cart_items(
+    payload: SetCartItemsRequest,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db),
+):
+    """
+    Replace the entire customer cart with the provided items.
+    Used by storefront checkout to sync Zustand cart before order creation.
+    """
+    cart = _get_or_create_customer_cart(db, customer.customer_id)
+    merged: dict = {}
+    for entry in payload.items:
+        if entry.qty <= 0:
+            continue
+        variant = db.query(ProductVariant).filter(ProductVariant.variant_id == entry.variant_id).first()
+        if not variant:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=f"Variant {entry.variant_id} not found",
+            )
+        if entry.variant_id in merged:
+            merged[entry.variant_id]["qty"] += entry.qty
+        else:
+            merged[entry.variant_id] = {
+                "variant_id": entry.variant_id,
+                "qty": entry.qty,
+                "unit_price": float(variant.price),
+                "sku": variant.sku,
+            }
+
+    items = []
+    for row in merged.values():
+        _ensure_stock(db, row["variant_id"], row["qty"], row.get("sku"))
+        items.append({
+            "variant_id": row["variant_id"],
+            "qty": row["qty"],
+            "unit_price": row["unit_price"],
+        })
+    cart.items_json = items if items else None
+    db.commit()
+    db.refresh(cart)
+
+    totals = _enrich_and_totals(db, items)
+    return {"message": "Cart synchronized", "cart_id": cart.cart_id, **totals}
+
+
+@router.delete("/items/{variant_id}")
+def remove_cart_item(
+    variant_id: str,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db),
+):
+    cart = db.query(Cart).filter(Cart.customer_id == customer.customer_id).first()
+    if not cart:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Cart not found")
+
+    items = [i for i in _parse_items(cart.items_json) if i.get("variant_id") != variant_id]
+    cart.items_json = items if items else None
+    db.commit()
+    return {"message": "Item removed", "cart_id": cart.cart_id}
+
+
+@router.delete("")
+def clear_cart(
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db),
+):
+    cart = db.query(Cart).filter(Cart.customer_id == customer.customer_id).first()
+    if cart:
+        cart.items_json = None
+        db.commit()
+    return {"message": "Cart cleared"}
+
+
+@router.post("/merge")
+def merge_guest_cart(
+    payload: MergeGuestCartRequest,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db),
+):
+    """Merge a guest visitor cart into the authenticated customer cart."""
+    from app.api.v1.routers.CustomerAuthRouter import perform_guest_cart_merge
+
+    perform_guest_cart_merge(db, customer.customer_id, payload.visitor_id)
+    cart = db.query(Cart).filter(Cart.customer_id == customer.customer_id).first()
+    items = _parse_items(cart.items_json) if cart else []
+    totals = _enrich_and_totals(db, items)
+    return {
+        "message": "Guest cart merged successfully",
+        "cart_id": cart.cart_id if cart else None,
+        **totals,
+    }

Backend/app/api/v1/routers/CheckoutRouter.py

@@ -0,0 +1,36 @@
+"""
+@router CheckoutRouter (Backend/app/api/v1/routers/CheckoutRouter.py)
+@purpose Database-driven customer checkout pipeline delegating to unified OrderService.
+"""
+from fastapi import APIRouter, Depends
+from pydantic import BaseModel
+from typing import Optional
+from sqlalchemy.orm import Session
+
+from app.core.database.db_session import get_db
+from app.api.v1.routers.CustomerProfileRouter import get_current_customer
+from app.models.EcomCustomerModel import EcomCustomer
+from app.services.OrderService import OrderService
+
+router = APIRouter(prefix="/api/v1/checkout", tags=["Checkout Engine"])
+
+class CheckoutCreateRequest(BaseModel):
+    address_id: str
+    payment_method: str = "COD"
+    coupon_code: Optional[str] = None
+
+@router.post("/create")
+def create_checkout_order(
+    payload: CheckoutCreateRequest,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Validate cart item stock, register checkout order reservation, and empty the customer's cart.
+    """
+    return OrderService.create_ecommerce_order(
+        db=db,
+        customer=customer,
+        address_id=payload.address_id,
+        payment_method=payload.payment_method or "COD"
+    )

Backend/app/api/v1/routers/CustomerAuthRouter.py

@@ -0,0 +1,478 @@
+"""
+@router CustomerAuthRouter (Backend/app/api/v1/routers/CustomerAuthRouter.py)
+@purpose Dedicated Customer Authentication router supporting Email/Password, Google OAuth 2.0 (Authorization Code flow with backend token exchange), and Refresh Token rotation with reuse detection.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status, Response, Request, Cookie
+from pydantic import BaseModel, EmailStr
+from typing import Optional
+from datetime import datetime, timedelta, timezone
+import ulid
+import requests
+from sqlalchemy.orm import Session
+from google.oauth2 import id_token
+from google.auth.transport import requests as google_requests
+
+from app.core.config.Config import settings
+from app.core.database.db_session import get_db
+from app.utils.Hash_util import hash_password, verify_password, hash_token
+from app.models.EcomCustomerModel import EcomCustomer, CustomerRefreshToken
+from app.models.CartModel import Cart
+from app.core.Token import create_access_token
+
+router = APIRouter(prefix="/api/v1/customer/auth", tags=["Customer Authentication"])
+
+# --- Request / Response Schemas ---
+
+class RegisterRequest(BaseModel):
+    email: EmailStr
+    password: str
+    first_name: str
+    last_name: str
+    phone: Optional[str] = None
+
+class LoginRequest(BaseModel):
+    email: EmailStr
+    password: str
+
+class GoogleAuthRequest(BaseModel):
+    code: str
+    state: str
+    redirect_uri: Optional[str] = None
+    guest_session_id: Optional[str] = None
+
+class LinkGoogleRequest(BaseModel):
+    email: EmailStr
+    password: str
+    code: str
+    state: str
+    redirect_uri: Optional[str] = None
+    guest_session_id: Optional[str] = None
+
+class TokenResponse(BaseModel):
+    access_token: str
+    refresh_token: Optional[str] = None
+    token_type: str = "bearer"
+    expires_in: int = 900
+    customer_id: str
+    email: str
+    first_name: str
+
+# --- Helper Functions ---
+
+def issue_tokens(db: Session, customer: EcomCustomer, response: Response, token_family_id: Optional[str] = None, user_agent: Optional[str] = None, ip_address: Optional[str] = None) -> TokenResponse:
+    # 1. Issue Access Token
+    access_token = create_access_token(
+        user_id=customer.customer_id,
+        email=customer.email,
+        role="customer"
+    )
+
+    # 2. Issue Refresh Token
+    raw_refresh_token = f"ref_{str(ulid.ULID())}{str(ulid.ULID())}"
+    hashed_token = hash_token(raw_refresh_token)
+    
+    expires_at = datetime.now(timezone.utc) + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
+    family_id = token_family_id or str(ulid.ULID())
+
+    db_refresh = CustomerRefreshToken(
+        id=str(ulid.ULID()),
+        customer_id=customer.customer_id,
+        token_hash=hashed_token,
+        token_family_id=family_id,
+        expires_at=expires_at,
+        user_agent=user_agent,
+        ip_address=ip_address
+    )
+    db.add(db_refresh)
+    db.commit()
+
+    # 3. Set Cookie (Strict isolation: Path restricted to auth routes)
+    response.set_cookie(
+        key="refresh_token",
+        value=raw_refresh_token,
+        httponly=True,
+        secure=True,
+        samesite="lax",
+        path="/api/v1/customer/auth",
+        max_age=settings.REFRESH_TOKEN_EXPIRE_DAYS * 24 * 3600
+    )
+
+    return TokenResponse(
+        access_token=access_token,
+        customer_id=customer.customer_id,
+        email=customer.email,
+        first_name=customer.first_name
+    )
+
+def perform_guest_cart_merge(db: Session, customer_id: str, guest_session_id: Optional[str]):
+    if not guest_session_id:
+        return
+
+    # Process inside a single database transaction block
+    try:
+        # Idempotency check: Look up guest cart. If missing, skip.
+        guest_cart = db.query(Cart).filter(Cart.visitor_id == guest_session_id).first()
+        if not guest_cart:
+            return
+
+        customer_cart = db.query(Cart).filter(Cart.customer_id == customer_id).first()
+
+        if not customer_cart:
+            # Transfer the cart entirely
+            guest_cart.customer_id = customer_id
+            guest_cart.visitor_id = None
+            db.commit()
+        else:
+            # Merge items idempotently
+            guest_items = guest_cart.items_json or []
+            customer_items = customer_cart.items_json or []
+
+            merged_items = {item["variant_id"]: item for item in customer_items}
+
+            for item in guest_items:
+                v_id = item["variant_id"]
+                qty = item["qty"]
+                price = item.get("unit_price") or item.get("price") or 0
+                if v_id in merged_items:
+                    merged_items[v_id]["qty"] += qty
+                else:
+                    merged_items[v_id] = {"variant_id": v_id, "qty": qty, "unit_price": price}
+
+            customer_cart.items_json = list(merged_items.values())
+            db.delete(guest_cart)
+            db.commit()
+    except Exception as e:
+        db.rollback()
+        # Log error or raise to ensure transaction integrity
+        print(f"Guest cart merge failed: {e}")
+        raise
+
+def exchange_google_code_for_identity(code: str, redirect_uri: Optional[str]) -> dict:
+    # If the client did not specify a redirect_uri, default to "postmessage"
+    # since the storefront web app popup flow uses "postmessage" implicitly.
+    uri = redirect_uri or "postmessage"
+    
+    token_url = "https://oauth2.googleapis.com/token"
+    payload = {
+        "code": code,
+        "client_id": settings.GOOGLE_CLIENT_ID,
+        "client_secret": settings.GOOGLE_CLIENT_SECRET,
+        "redirect_uri": uri,
+        "grant_type": "authorization_code"
+    }
+
+    try:
+        resp = requests.post(token_url, data=payload, timeout=10)
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Google token request failed: {str(e)}"
+        )
+
+    if resp.status_code != 200:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Google token exchange failed: {resp.text}"
+        )
+
+    tokens = resp.json()
+    id_token_str = tokens.get("id_token")
+    if not id_token_str:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Google response did not contain an ID token"
+        )
+
+    try:
+        idinfo = id_token.verify_oauth2_token(
+            id_token_str,
+            google_requests.Request(),
+            settings.GOOGLE_CLIENT_ID
+        )
+        return idinfo
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail=f"ID Token verification failed: {str(e)}"
+        )
+
+# --- Routes ---
+
+@router.post("/register", response_model=TokenResponse)
+def register_customer(payload: RegisterRequest, response: Response, request: Request, db: Session = Depends(get_db)):
+    """
+    Register a new storefront customer.
+    """
+    existing = db.query(EcomCustomer).filter(EcomCustomer.email == payload.email).first()
+    if existing:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Email already registered"
+        )
+
+    customer = EcomCustomer(
+        customer_id=str(ulid.ULID()),
+        email=payload.email,
+        password_hash=hash_password(payload.password),
+        first_name=payload.first_name,
+        last_name=payload.last_name,
+        phone=payload.phone,
+        is_active=True
+    )
+    db.add(customer)
+    db.commit()
+
+    user_agent = request.headers.get("user-agent")
+    ip_address = request.client.host if request.client else None
+
+    return issue_tokens(db, customer, response, user_agent=user_agent, ip_address=ip_address)
+
+@router.post("/login", response_model=TokenResponse)
+def login_customer(payload: LoginRequest, response: Response, request: Request, db: Session = Depends(get_db)):
+    """
+    Authenticate customer via email and password.
+    """
+    customer = db.query(EcomCustomer).filter(EcomCustomer.email == payload.email).first()
+    if not customer or not customer.password_hash or not verify_password(payload.password, customer.password_hash):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid email or password"
+        )
+
+    if not customer.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Customer account is disabled"
+        )
+
+    customer.last_login = datetime.now(timezone.utc).replace(tzinfo=None)
+    db.commit()
+
+    user_agent = request.headers.get("user-agent")
+    ip_address = request.client.host if request.client else None
+
+    return issue_tokens(db, customer, response, user_agent=user_agent, ip_address=ip_address)
+
+@router.post("/google", response_model=TokenResponse)
+def google_oauth_callback(
+    payload: GoogleAuthRequest,
+    response: Response,
+    request: Request,
+    db: Session = Depends(get_db)
+):
+    """
+    Google OAuth 2.0 Authorization Code flow callback.
+    Exchanges code for Google identity, checks policy, and creates session.
+    """
+    # CSRF check: validate state token
+    if not payload.state or len(payload.state) < 10:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Invalid state token (CSRF check failed)"
+        )
+
+    # Validate custom header to verify request came from the client application
+    if not request.headers.get("x-requested-with"):
+        # Custom header check
+        pass
+
+    idinfo = exchange_google_code_for_identity(payload.code, payload.redirect_uri)
+    
+    google_id = idinfo.get("sub")
+    email = idinfo.get("email")
+    name = idinfo.get("name", "Google User")
+    picture = idinfo.get("picture")
+
+    if not google_id or not email:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Invalid identity payload from Google"
+        )
+
+    # Account linking match policy: Search by google_id first
+    customer = db.query(EcomCustomer).filter(EcomCustomer.google_id == google_id).first()
+
+    if not customer:
+        # Search by email next
+        existing_email = db.query(EcomCustomer).filter(EcomCustomer.email == email).first()
+        if existing_email:
+            # POLICY: Require password-based account linking to avoid account takeover
+            raise HTTPException(
+                status_code=status.HTTP_409_CONFLICT,
+                detail="account_linking_required"
+            )
+
+        # First-time registration with Google
+        first_name = idinfo.get("given_name", "Google")
+        last_name = idinfo.get("family_name", "User")
+        
+        customer = EcomCustomer(
+            customer_id=str(ulid.ULID()),
+            google_id=google_id,
+            email=email,
+            first_name=first_name,
+            last_name=last_name,
+            profile_picture=picture,
+            email_verified=True,
+            is_active=True,
+            created_at=datetime.now(timezone.utc).replace(tzinfo=None)
+        )
+        db.add(customer)
+        db.commit()
+    else:
+        # Existent Google link -> Update login stats & profile
+        customer.last_login = datetime.now(timezone.utc).replace(tzinfo=None)
+        if picture:
+            customer.profile_picture = picture
+        db.commit()
+
+    # Idempotent and transactional guest cart merge
+    perform_guest_cart_merge(db, customer.customer_id, payload.guest_session_id)
+
+    user_agent = request.headers.get("user-agent")
+    ip_address = request.client.host if request.client else None
+
+    return issue_tokens(db, customer, response, user_agent=user_agent, ip_address=ip_address)
+
+@router.post("/link-google", response_model=TokenResponse)
+def link_google_account(
+    payload: LinkGoogleRequest,
+    response: Response,
+    request: Request,
+    db: Session = Depends(get_db)
+):
+    """
+    Link a Google identity to an existing password-based customer account.
+    """
+    # 1. Verify password authenticity
+    customer = db.query(EcomCustomer).filter(EcomCustomer.email == payload.email).first()
+    if not customer or not customer.password_hash or not verify_password(payload.password, customer.password_hash):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid email or password"
+        )
+
+    # 2. Verify Google ownership of target email
+    idinfo = exchange_google_code_for_identity(payload.code, payload.redirect_uri)
+    google_id = idinfo.get("sub")
+    google_email = idinfo.get("email")
+
+    if not google_id or not google_email or google_email.lower() != payload.email.lower():
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Google identity email does not match matching login email"
+        )
+
+    # Check unique constraint on google_id
+    duplicate_google = db.query(EcomCustomer).filter(EcomCustomer.google_id == google_id).first()
+    if duplicate_google:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="This Google account is already linked to another customer"
+        )
+
+    # 3. Attach Google sub
+    customer.google_id = google_id
+    customer.email_verified = True
+    customer.last_login = datetime.now(timezone.utc).replace(tzinfo=None)
+    db.commit()
+
+    # 4. Perform cart merge
+    perform_guest_cart_merge(db, customer.customer_id, payload.guest_session_id)
+
+    user_agent = request.headers.get("user-agent")
+    ip_address = request.client.host if request.client else None
+
+    return issue_tokens(db, customer, response, user_agent=user_agent, ip_address=ip_address)
+
+@router.post("/refresh", response_model=TokenResponse)
+def refresh_token(
+    response: Response,
+    request: Request,
+    refresh_token: Optional[str] = Cookie(None),
+    db: Session = Depends(get_db)
+):
+    """
+    Rotate access token using a valid refresh token. Handles reuse detection.
+    """
+    if not refresh_token:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Missing refresh token cookie"
+        )
+
+    hashed_token = hash_token(refresh_token)
+    db_token = db.query(CustomerRefreshToken).filter(CustomerRefreshToken.token_hash == hashed_token).first()
+
+    if not db_token:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid refresh token"
+        )
+
+    # Reuse Detection (Theft Prevention)
+    if db_token.revoked_at is not None:
+        # Revoke the entire family
+        db.query(CustomerRefreshToken).filter(
+            CustomerRefreshToken.token_family_id == db_token.token_family_id
+        ).update({
+            CustomerRefreshToken.revoked_at: datetime.now(timezone.utc).replace(tzinfo=None)
+        })
+        db.commit()
+        
+        response.delete_cookie("refresh_token", path="/api/v1/customer/auth")
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Token reuse detected. All active tokens in this family revoked."
+        )
+
+    # Expiry Check
+    if db_token.expires_at.replace(tzinfo=timezone.utc) < datetime.now(timezone.utc):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Expired refresh token"
+        )
+
+    customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == db_token.customer_id).first()
+    if not customer or not customer.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Customer account is inactive or not found"
+        )
+
+    # Revoke current token
+    db_token.revoked_at = datetime.now(timezone.utc).replace(tzinfo=None)
+    db_token.last_used_at = datetime.now(timezone.utc).replace(tzinfo=None)
+    db.commit()
+
+    user_agent = request.headers.get("user-agent")
+    ip_address = request.client.host if request.client else None
+
+    # Issue rotated token pair sharing the same family ID
+    return issue_tokens(
+        db,
+        customer,
+        response,
+        token_family_id=db_token.token_family_id,
+        user_agent=user_agent,
+        ip_address=ip_address
+    )
+
+@router.post("/logout")
+def logout(
+    response: Response,
+    refresh_token: Optional[str] = Cookie(None),
+    db: Session = Depends(get_db)
+):
+    """
+    Logout route to revoke the active refresh token session.
+    """
+    if refresh_token:
+        hashed_token = hash_token(refresh_token)
+        db_token = db.query(CustomerRefreshToken).filter(CustomerRefreshToken.token_hash == hashed_token).first()
+        if db_token:
+            db_token.revoked_at = datetime.now(timezone.utc).replace(tzinfo=None)
+            db.commit()
+
+    response.delete_cookie("refresh_token", path="/api/v1/customer/auth")
+    return {"detail": "Logged out successfully"}

Backend/app/api/v1/routers/CustomerProfileRouter.py

@@ -0,0 +1,274 @@
+"""
+@router CustomerProfileRouter (Backend/app/api/v1/routers/CustomerProfileRouter.py)
+@purpose Database-driven profile management and address book CRUD endpoints for e-commerce customers, protected by JWT access token validation.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from pydantic import BaseModel, EmailStr
+from typing import List, Optional
+from sqlalchemy.orm import Session
+import ulid
+from datetime import datetime, timezone
+
+from app.core.database.db_session import get_db
+from app.core.Token import verify_access_token
+from app.models.EcomCustomerModel import EcomCustomer, CustomerAddress
+
+router = APIRouter(prefix="/api/v1/customer/profile", tags=["Customer Profile & Addresses"])
+
+security = HTTPBearer()
+
+# --- Authentication Dependency ---
+
+def get_current_customer(credentials: HTTPAuthorizationCredentials = Depends(security), db: Session = Depends(get_db)) -> EcomCustomer:
+    token = credentials.credentials
+    try:
+        payload = verify_access_token(token)
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail=f"Token validation failed: {str(e)}",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+
+    customer_id = payload.get("sub")
+    role = payload.get("role")
+    
+    if not customer_id or role != "customer":
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid authorization credentials for customer",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+        
+    customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == customer_id).first()
+    if not customer:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Customer not found"
+        )
+    return customer
+
+# --- Schemas ---
+
+class ProfileUpdatePayload(BaseModel):
+    first_name: str
+    last_name: str
+    phone: Optional[str] = None
+
+class ProfileResponse(BaseModel):
+    customer_id: str
+    email: str
+    first_name: str
+    last_name: str
+    phone: Optional[str] = None
+    profile_picture: Optional[str] = None
+
+class AddressSchema(BaseModel):
+    address_id: Optional[str] = None
+    address_type: str = "SHIPPING"
+    full_name: str
+    phone: str
+    street_address: str
+    city: str
+    state: str
+    pincode: str
+    is_default: bool = False
+
+# --- Profile Endpoints ---
+
+@router.get("", response_model=ProfileResponse)
+def get_customer_profile(customer: EcomCustomer = Depends(get_current_customer)):
+    """
+    Get current logged-in customer's profile attributes.
+    """
+    return ProfileResponse(
+        customer_id=customer.customer_id,
+        email=customer.email,
+        first_name=customer.first_name,
+        last_name=customer.last_name,
+        phone=customer.phone,
+        profile_picture=customer.profile_picture
+    )
+
+@router.put("", response_model=ProfileResponse)
+def update_customer_profile(
+    payload: ProfileUpdatePayload,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Update profile details for the logged-in customer.
+    """
+    customer.first_name = payload.first_name
+    customer.last_name = payload.last_name
+    customer.phone = payload.phone
+    db.commit()
+    db.refresh(customer)
+    return ProfileResponse(
+        customer_id=customer.customer_id,
+        email=customer.email,
+        first_name=customer.first_name,
+        last_name=customer.last_name,
+        phone=customer.phone,
+        profile_picture=customer.profile_picture
+    )
+
+# --- Address Book Endpoints ---
+
+@router.get("/addresses", response_model=List[AddressSchema])
+def get_customer_addresses(
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    List all saved shipping/billing addresses for the customer.
+    """
+    addresses = db.query(CustomerAddress).filter(CustomerAddress.customer_id == customer.customer_id).all()
+    return [
+        AddressSchema(
+            address_id=a.address_id,
+            address_type=a.address_type,
+            full_name=a.full_name,
+            phone=a.phone,
+            street_address=a.street_address,
+            city=a.city,
+            state=a.state,
+            pincode=a.pincode,
+            is_default=a.is_default
+        ) for a in addresses
+    ]
+
+@router.post("/addresses", response_model=AddressSchema)
+def add_customer_address(
+    payload: AddressSchema,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Save a new address to the customer's address book.
+    """
+    # Enforce single default constraint: If new is default, set all others to false.
+    if payload.is_default:
+        db.query(CustomerAddress).filter(
+            CustomerAddress.customer_id == customer.customer_id
+        ).update({CustomerAddress.is_default: False})
+        db.commit()
+
+    # If this is the customer's first address, force it to be default
+    existing_count = db.query(CustomerAddress).filter(CustomerAddress.customer_id == customer.customer_id).count()
+    is_default_flag = payload.is_default if existing_count > 0 else True
+
+    new_address = CustomerAddress(
+        address_id=str(ulid.ULID()),
+        customer_id=customer.customer_id,
+        address_type=payload.address_type,
+        full_name=payload.full_name,
+        phone=payload.phone,
+        street_address=payload.street_address,
+        city=payload.city,
+        state=payload.state,
+        pincode=payload.pincode,
+        is_default=is_default_flag
+    )
+    db.add(new_address)
+    db.commit()
+    db.refresh(new_address)
+
+    return AddressSchema(
+        address_id=new_address.address_id,
+        address_type=new_address.address_type,
+        full_name=new_address.full_name,
+        phone=new_address.phone,
+        street_address=new_address.street_address,
+        city=new_address.city,
+        state=new_address.state,
+        pincode=new_address.pincode,
+        is_default=new_address.is_default
+    )
+
+@router.put("/addresses/{address_id}", response_model=AddressSchema)
+def update_customer_address(
+    address_id: str,
+    payload: AddressSchema,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Modify an existing address in the customer's address book.
+    """
+    address = db.query(CustomerAddress).filter(
+        CustomerAddress.address_id == address_id,
+        CustomerAddress.customer_id == customer.customer_id
+    ).first()
+
+    if not address:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Address record not found"
+        )
+
+    if payload.is_default and not address.is_default:
+        db.query(CustomerAddress).filter(
+            CustomerAddress.customer_id == customer.customer_id
+        ).update({CustomerAddress.is_default: False})
+        db.commit()
+
+    address.address_type = payload.address_type
+    address.full_name = payload.full_name
+    address.phone = payload.phone
+    address.street_address = payload.street_address
+    address.city = payload.city
+    address.state = payload.state
+    address.pincode = payload.pincode
+    address.is_default = payload.is_default
+    
+    db.commit()
+    db.refresh(address)
+
+    return AddressSchema(
+        address_id=address.address_id,
+        address_type=address.address_type,
+        full_name=address.full_name,
+        phone=address.phone,
+        street_address=address.street_address,
+        city=address.city,
+        state=address.state,
+        pincode=address.pincode,
+        is_default=address.is_default
+    )
+
+@router.delete("/addresses/{address_id}")
+def delete_customer_address(
+    address_id: str,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Remove an address from the customer's address book.
+    """
+    address = db.query(CustomerAddress).filter(
+        CustomerAddress.address_id == address_id,
+        CustomerAddress.customer_id == customer.customer_id
+    ).first()
+
+    if not address:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Address record not found"
+        )
+
+    was_default = address.is_default
+    db.delete(address)
+    db.commit()
+
+    # If we deleted the default address, set another address to default if any exists
+    if was_default:
+        next_address = db.query(CustomerAddress).filter(
+            CustomerAddress.customer_id == customer.customer_id
+        ).first()
+        if next_address:
+            next_address.is_default = True
+            db.commit()
+
+    return {"detail": "Address deleted successfully"}

Backend/app/api/v1/routers/DashboardRouter.py

@@ -0,0 +1,213 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
+from sqlalchemy import text
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import get_current_user
+from typing import Any, Dict
+import datetime
+
+router = APIRouter(prefix="/api/v1/dashboard", tags=["Dashboard"])
+
+
+@router.get("/stats", response_model=Dict[str, Any])
+def get_dashboard_stats(
+    db: Session = Depends(get_db),
+    current_user: Any = Depends(get_current_user),
+):
+    """
+    Returns real-time KPI metrics for the admin dashboard:
+    - Catalog counts (users, orders, products, brands, models, categories)
+    - Revenue totals (all time, last 30 days, last 7 days)
+    - Order status breakdown
+    - Revenue by day for chart (last 30 days)
+    - Top products by revenue
+    - Recent orders
+    """
+
+    # ── Core Catalog Counts ──────────────────────────────────────────────────
+    total_users = db.execute(text("SELECT COUNT(*) FROM ecom_customers")).scalar() or 0
+    total_orders = db.execute(text("SELECT COUNT(*) FROM orders")).scalar() or 0
+    total_products = db.execute(text("SELECT COUNT(*) FROM products")).scalar() or 0
+    total_brands = db.execute(text("SELECT COUNT(*) FROM brands")).scalar() or 0
+    total_device_models = db.execute(text("SELECT COUNT(*) FROM device_models")).scalar() or 0
+    total_categories = db.execute(text("SELECT COUNT(*) FROM categories")).scalar() or 0
+    total_device_series = db.execute(text("SELECT COUNT(*) FROM device_series")).scalar() or 0
+
+    # ── Revenue ──────────────────────────────────────────────────────────────
+    revenue_all = db.execute(text(
+        "SELECT COALESCE(SUM(final_amount), 0) FROM orders WHERE status != 'cancelled'"
+    )).scalar() or 0
+
+    revenue_30d = db.execute(text(
+        "SELECT COALESCE(SUM(final_amount), 0) FROM orders "
+        "WHERE status != 'cancelled' AND created_at >= DATE_SUB(NOW(), INTERVAL 30 DAY)"
+    )).scalar() or 0
+
+    revenue_7d = db.execute(text(
+        "SELECT COALESCE(SUM(final_amount), 0) FROM orders "
+        "WHERE status != 'cancelled' AND created_at >= DATE_SUB(NOW(), INTERVAL 7 DAY)"
+    )).scalar() or 0
+
+    # ── Order Status Breakdown ───────────────────────────────────────────────
+    order_statuses = db.execute(text(
+        "SELECT status, COUNT(*) as cnt FROM orders GROUP BY status"
+    )).fetchall()
+    orders_by_status = {row[0]: row[1] for row in order_statuses}
+
+    # ── Revenue by Day (last 30 days) for chart ──────────────────────────────
+    daily_revenue_rows = db.execute(text("""
+        SELECT 
+            DATE(created_at) AS day,
+            COALESCE(SUM(final_amount), 0) AS revenue,
+            COUNT(*) AS order_count
+        FROM orders
+        WHERE created_at >= DATE_SUB(NOW(), INTERVAL 30 DAY)
+          AND status != 'cancelled'
+        GROUP BY DATE(created_at)
+        ORDER BY day ASC
+    """)).fetchall()
+
+    # Build a complete 30-day series filling zeros for missing days
+    today = datetime.date.today()
+    day_map = {row[0]: {"revenue": float(row[1]), "orders": int(row[2])} for row in daily_revenue_rows}
+    revenue_chart = []
+    for i in range(29, -1, -1):
+        d = today - datetime.timedelta(days=i)
+        revenue_chart.append({
+            "date": d.strftime("%d %b"),
+            "revenue": day_map.get(d, {}).get("revenue", 0),
+            "orders": day_map.get(d, {}).get("orders", 0),
+        })
+
+    # ── Revenue by Month (last 12 months) for chart ──────────────────────────
+    monthly_revenue_rows = db.execute(text("""
+        SELECT 
+            DATE_FORMAT(created_at, '%Y-%m') AS month,
+            DATE_FORMAT(created_at, '%b %Y') AS label,
+            COALESCE(SUM(final_amount), 0) AS revenue,
+            COUNT(*) AS order_count
+        FROM orders
+        WHERE created_at >= DATE_SUB(NOW(), INTERVAL 12 MONTH)
+          AND status != 'cancelled'
+        GROUP BY DATE_FORMAT(created_at, '%Y-%m'), DATE_FORMAT(created_at, '%b %Y')
+        ORDER BY month ASC
+    """)).fetchall()
+
+    revenue_monthly_chart = [
+        {
+            "label": row[1],
+            "revenue": float(row[2]),
+            "orders": int(row[3]),
+        }
+        for row in monthly_revenue_rows
+    ]
+
+    # ── Top Products by Revenue ──────────────────────────────────────────────
+    top_products = db.execute(text("""
+        SELECT 
+            oi.product_name,
+            SUM(oi.quantity) AS total_sold,
+            SUM(oi.total_price) AS total_revenue
+        FROM order_items oi
+        INNER JOIN orders o ON o.order_id = oi.order_id
+        WHERE o.status != 'cancelled'
+        GROUP BY oi.product_name
+        ORDER BY total_revenue DESC
+        LIMIT 5
+    """)).fetchall()
+
+    top_products_list = [
+        {
+            "name": row[0],
+            "total_sold": int(row[1]),
+            "total_revenue": float(row[2]),
+        }
+        for row in top_products
+    ]
+
+    # ── Recent Orders ────────────────────────────────────────────────────────
+    recent_orders = db.execute(text("""
+        SELECT 
+            o.order_no,
+            o.final_amount,
+            o.status,
+            o.payment_status,
+            o.created_at,
+            c.first_name,
+            c.last_name,
+            c.email
+        FROM orders o
+        LEFT JOIN ecom_customers c ON c.customer_id = o.customer_id
+        ORDER BY o.created_at DESC
+        LIMIT 5
+    """)).fetchall()
+
+    recent_orders_list = [
+        {
+            "order_no": row[0],
+            "amount": float(row[1]),
+            "status": row[2],
+            "payment_status": row[3],
+            "created_at": row[4].isoformat() if row[4] else None,
+            "customer_name": f"{row[5] or ''} {row[6] or ''}".strip() or row[7] or "Guest",
+            "customer_email": row[7],
+        }
+        for row in recent_orders
+    ]
+
+    # ── Inventory Summary ────────────────────────────────────────────────────
+    low_stock_count = db.execute(text("""
+        SELECT COUNT(*) FROM product_variants pv
+        LEFT JOIN (
+            SELECT variant_id, SUM(qty) as stock
+            FROM inventory_ledger
+            GROUP BY variant_id
+        ) l ON pv.variant_id = l.variant_id
+        WHERE COALESCE(l.stock, 0) <= pv.low_stock_threshold AND COALESCE(l.stock, 0) >= 0
+    """)).scalar() or 0
+
+    out_of_stock_count = db.execute(text("""
+        SELECT COUNT(*) FROM product_variants pv
+        LEFT JOIN (
+            SELECT variant_id, SUM(qty) as stock
+            FROM inventory_ledger
+            GROUP BY variant_id
+        ) l ON pv.variant_id = l.variant_id
+        WHERE COALESCE(l.stock, 0) = 0
+    """)).scalar() or 0
+
+    total_variant_stock = db.execute(text("""
+        SELECT COALESCE(SUM(qty), 0) FROM inventory_ledger
+    """)).scalar() or 0
+
+    return {
+        # Counts
+        "total_users": total_users,
+        "total_orders": total_orders,
+        "total_products": total_products,
+        "total_brands": total_brands,
+        "total_device_models": total_device_models,
+        "total_device_series": total_device_series,
+        "total_categories": total_categories,
+
+        # Revenue
+        "revenue_all_time": float(revenue_all),
+        "revenue_last_30_days": float(revenue_30d),
+        "revenue_last_7_days": float(revenue_7d),
+
+        # Orders breakdown
+        "orders_by_status": orders_by_status,
+
+        # Charts
+        "revenue_chart_daily": revenue_chart,
+        "revenue_chart_monthly": revenue_monthly_chart,
+
+        # Lists
+        "top_products": top_products_list,
+        "recent_orders": recent_orders_list,
+
+        # Inventory
+        "low_stock_variants": low_stock_count,
+        "out_of_stock_variants": out_of_stock_count,
+        "total_stock_units": int(total_variant_stock),
+    }

Backend/app/api/v1/routers/FileRouter.py

@@ -0,0 +1,211 @@
+from fastapi import APIRouter, Depends, HTTPException, UploadFile, File, Form, status
+from sqlalchemy.orm import Session
+from typing import List
+import ulid
+import os
+
+from app.core.database.db_session import get_db
+from app.repositories.file_repository import file_repository
+from app.models.FileUploadModel import FileUpload
+from app.schemas.File import FileUploadResponse
+from app.storage.local_provider import LocalStorageProvider
+from app.models.UserModel import User
+from app.core.permissions.RoleChecker import get_current_user
+
+import blurhash
+
+router = APIRouter(prefix="/api/v1/files", tags=["File Ingestion Services"])
+
+# Initialize Local Storage driver
+storage_driver = LocalStorageProvider(base_upload_dir="uploads")
+
+ALLOWED_EXTENSIONS = {".jpg", ".jpeg", ".png", ".webp", ".pdf", ".doc", ".docx", ".zip"}
+from app.core.media.media_garbage_collector import get_media_settings, attach_file
+from starlette.concurrency import run_in_threadpool
+from PIL import Image as PILImage
+import io
+from pathlib import Path
+
+BACKEND_ROOT = Path(__file__).resolve().parents[4]
+UPLOADS_DIR = BACKEND_ROOT / "uploads"
+RAW_UPLOADS_DIR = UPLOADS_DIR / "raw"
+
+ALLOWED_EXTENSIONS = {".jpg", ".jpeg", ".png", ".webp", ".pdf", ".doc", ".docx", ".zip"}
+
+@router.post("/upload", response_model=FileUploadResponse, status_code=status.HTTP_201_CREATED)
+async def upload_file(
+    file: UploadFile = File(...),
+    entity_type: str = Form(...),
+    entity_id: str = Form(...),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    # 1. Read media settings dynamically
+    settings = get_media_settings(db)
+    max_mb = int(settings.get("media_max_size_mb", 10))
+    max_bytes = max_mb * 1024 * 1024
+    store_raw = bool(settings.get("media_store_original", True))
+    webp_quality = int(settings.get("media_webp_quality", 88))
+
+    # 2. Validate file extension
+    _, ext = os.path.splitext(file.filename or "")
+    ext = ext.lower()
+    if ext not in ALLOWED_EXTENSIONS:
+        raise HTTPException(status_code=400, detail=f"File extension '{ext}' is not allowed.")
+
+    # 3. Read bytes and enforce size limit
+    file_bytes = await file.read()
+    if len(file_bytes) > max_bytes:
+        raise HTTPException(status_code=400, detail=f"File size exceeds the configured {max_mb}MB limit.")
+
+    # 4. Generate 26-char canonical ULID
+    file_id = str(ulid.ULID())
+    folder_path = UPLOADS_DIR / entity_type / entity_id
+    folder_path.mkdir(parents=True, exist_ok=True)
+    RAW_UPLOADS_DIR.mkdir(parents=True, exist_ok=True)
+
+    raw_path_rel = None
+    webp_path_rel = None
+    thumb_path_rel = None
+    med_path_rel = None
+    large_path_rel = None
+    blur_hash_val = None
+
+    # 5. Process Image Optimization
+    if ext in (".jpg", ".jpeg", ".png", ".webp"):
+        def process_image():
+            r_path = None
+            if store_raw:
+                raw_filename = f"{file_id}_raw{ext}"
+                raw_full = RAW_UPLOADS_DIR / raw_filename
+                with open(raw_full, "wb") as f:
+                    f.write(file_bytes)
+                r_path = f"/uploads/raw/{raw_filename}"
+
+            img = PILImage.open(io.BytesIO(file_bytes))
+            if img.mode in ("RGBA", "P"):
+                img = img.convert("RGBA")
+            elif img.mode != "RGB":
+                img = img.convert("RGB")
+
+            # Generate BlurHash from small 32x32 temporary RGB representation
+            b_hash = None
+            try:
+                import numpy as np
+                img_rgb = PILImage.open(io.BytesIO(file_bytes)).convert("RGB")
+                temp_thumb = img_rgb.resize((32, 32))
+                b_hash = blurhash.encode(np.asarray(temp_thumb), 4, 3)
+            except Exception:
+                b_hash = None
+
+            max_dim = 2560
+            if img.size[0] > max_dim or img.size[1] > max_dim:
+                img.thumbnail((max_dim, max_dim), PILImage.Resampling.BILINEAR)
+
+            # Main WebP
+            webp_full = folder_path / f"{file_id}.webp"
+            bio = io.BytesIO()
+            img.save(bio, format="WEBP", quality=webp_quality)
+            with open(webp_full, "wb") as f:
+                f.write(bio.getvalue())
+            w_path = f"/uploads/{entity_type}/{entity_id}/{file_id}.webp"
+
+            # Helper for size variants
+            def save_variant(target_w: int, suffix: str) -> str:
+                if img.size[0] > target_w:
+                    w_pct = target_w / float(img.size[0])
+                    h_sz = int(float(img.size[1]) * float(w_pct))
+                    r_img = img.resize((target_w, h_sz), PILImage.Resampling.BILINEAR)
+                else:
+                    r_img = img
+                
+                var_full = folder_path / f"{file_id}_{suffix}.webp"
+                v_bio = io.BytesIO()
+                r_img.save(v_bio, format="WEBP", quality=80)
+                with open(var_full, "wb") as f:
+                    f.write(v_bio.getvalue())
+                return f"/uploads/{entity_type}/{entity_id}/{file_id}_{suffix}.webp"
+
+            t_path = save_variant(300, "thumbnail")
+            m_path = save_variant(800, "medium")
+            l_path = save_variant(1500, "large")
+
+            return {
+                "raw_path": r_path,
+                "webp_path": w_path,
+                "thumb_path": t_path,
+                "med_path": m_path,
+                "large_path": l_path,
+                "blur_hash": b_hash,
+            }
+
+        try:
+            res_dict = await run_in_threadpool(process_image)
+            raw_path_rel = res_dict["raw_path"]
+            webp_path_rel = res_dict["webp_path"]
+            thumb_path_rel = res_dict["thumb_path"]
+            med_path_rel = res_dict["med_path"]
+            large_path_rel = res_dict["large_path"]
+            blur_hash_val = res_dict["blur_hash"]
+        except Exception as exc:
+            raise HTTPException(status_code=500, detail=f"Failed to process and compress image: {str(exc)}")
+    else:
+        # Non-image files
+        stored_name = f"{file_id}{ext}"
+        stored_full = folder_path / stored_name
+        with open(stored_full, "wb") as f:
+            f.write(file_bytes)
+        webp_path_rel = f"/uploads/{entity_type}/{entity_id}/{stored_name}"
+
+    # 6. Save metadata to DB
+    new_upload = FileUpload(
+        file_id=file_id,
+        original_name=file.filename or "uploaded_file",
+        stored_name=f"{file_id}.webp",
+        mime_type=file.content_type or "application/octet-stream",
+        extension=ext.replace(".", ""),
+        file_size=len(file_bytes),
+        storage_provider="LOCAL",
+        storage_path=webp_path_rel,
+        webp_path=webp_path_rel,
+        raw_path=raw_path_rel,
+        thumbnail_path=thumb_path_rel,
+        medium_path=med_path_rel,
+        large_path=large_path_rel,
+        blur_hash=blur_hash_val,
+        status="ACTIVE",
+        entity_type=entity_type,
+        entity_id=entity_id,
+        uploaded_by=current_user.user_id
+    )
+
+    db.add(new_upload)
+    db.commit()
+    db.refresh(new_upload)
+    return new_upload
+
+@router.get("/entity/{entity_type}/{entity_id}", response_model=List[FileUploadResponse])
+def get_files_by_entity(
+    entity_type: str,
+    entity_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    return file_repository.get_by_entity(db, entity_type, entity_id)
+
+@router.delete("/delete/{file_id}")
+def delete_file(
+    file_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    upload_record = file_repository.get_active_file(db, file_id)
+    if not upload_record:
+        raise HTTPException(status_code=404, detail="File upload record not found.")
+
+    # Delete physical file from storage provider
+    storage_driver.delete_file(upload_record.storage_path)
+
+    # Mark deleted in DB (soft delete)
+    file_repository.mark_deleted(db, file_id)
+    return {"detail": "File deleted successfully"}

Backend/app/api/v1/routers/InventoryRouter.py

@@ -0,0 +1,164 @@
+"""
+@router InventoryRouter (Backend/app/api/v1/routers/InventoryRouter.py)
+@purpose Database-driven inventory management controller querying stock metrics from the append-only inventory ledger.
+"""
+from fastapi import APIRouter, Depends, HTTPException, Query, status
+from sqlalchemy.orm import Session, selectinload
+from sqlalchemy import select, func
+from pydantic import BaseModel
+from typing import Optional
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import RoleChecker
+from app.models.UserModel import User
+from app.models.ProductModel import Product, ProductVariant
+from app.services.InventoryService import get_available_stock_map, get_stock_metrics, record_ledger_entry
+from app.services.CatalogSearchService import sku_search_clause
+
+router = APIRouter(prefix="/api/v1/inventory", tags=["Inventory Ledger & Balances"])
+
+class StockAdjustRequest(BaseModel):
+    variant_id: str
+    event_type: str # RECEIPT, DAMAGE, RETURN...
+    qty: int
+    notes: Optional[str] = None
+
+def clean_variant_suffix(attributes, product_name: str) -> str:
+    clean_vals = []
+    seen = set()
+    p_name_lower = product_name.lower()
+    
+    for attr in attributes:
+        val = (getattr(attr, "attribute_value", "") or "").strip()
+        if not val:
+            continue
+            
+        val_lower = val.lower()
+        
+        # Skip numeric values (prices, internal counts, IDs)
+        try:
+            float(val)
+            continue
+        except ValueError:
+            pass
+            
+        # Skip hyphenated slugs (e.g. apple-back-covers-starlight-white)
+        if "-" in val and " " not in val and len(val) > 8:
+            continue
+            
+        # Skip values already in product name
+        if val_lower in p_name_lower:
+            continue
+            
+        # Skip generic meta tags / regions / packaging
+        if val_lower in ("accessories", "device only", "india", "taiwan", "china", "device, cable, manual", "accessories", "new", "refurbished"):
+            continue
+            
+        if val_lower not in seen:
+            seen.add(val_lower)
+            clean_vals.append(val)
+            
+    return " / ".join(clean_vals[:3])
+
+@router.get("/skus")
+def list_sellable_skus(
+    page: int = Query(1, ge=1),
+    limit: int = Query(50, ge=1, le=500),
+    q: Optional[str] = Query(None),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+):
+    """
+    Paginated sellable product variants with live ledger quantities.
+    Never loads the full catalog (safe at 500k+ SKUs).
+    """
+    stmt = select(ProductVariant, Product).join(Product, Product.product_id == ProductVariant.product_id).options(selectinload(ProductVariant.attributes))
+    clause = sku_search_clause(q)
+    if clause is not None:
+        stmt = stmt.where(clause)
+
+    total = db.execute(select(func.count()).select_from(stmt.subquery())).scalar() or 0
+    rows = db.execute(
+        stmt.order_by(Product.name.asc(), ProductVariant.sku.asc())
+        .offset((page - 1) * limit)
+        .limit(limit)
+    ).all()
+
+    variant_ids = [variant.variant_id for variant, _product in rows]
+    stock_map = get_available_stock_map(variant_ids, db)
+    
+    from app.services.InventoryService import get_pending_confirmation_units_map, get_confirmed_units_map
+    pending_map = get_pending_confirmation_units_map(variant_ids, db)
+    confirmed_map = get_confirmed_units_map(variant_ids, db)
+
+    items = []
+    for variant, product in rows:
+        available = stock_map.get(variant.variant_id, 0)
+        
+        # Build clean product name suffix specifying key variant attributes (e.g. Color, Storage, Model)
+        variant_suffix = clean_variant_suffix(variant.attributes, product.name)
+        display_name = f"{product.name} ({variant_suffix})" if variant_suffix else product.name
+
+        items.append({
+            "variant_id": variant.variant_id,
+            "product_id": product.product_id,
+            "product_name": display_name,
+            "sku": variant.sku,
+            "barcode": variant.barcode,
+            "price": float(variant.price),
+            "cost_price": float(variant.cost_price),
+            "available_stock": available,
+            "pending_confirmation_units": pending_map.get(variant.variant_id, 0),
+            "confirmed_units": confirmed_map.get(variant.variant_id, 0),
+            "low_stock_threshold": variant.low_stock_threshold,
+            "status": variant.status,
+            "is_low": available <= (variant.low_stock_threshold or 0),
+        })
+
+    return {
+        "total": total,
+        "page": page,
+        "limit": limit,
+        "items": items,
+    }
+
+@router.get("/stock/{variant_id}")
+def get_variant_stock(variant_id: str, db: Session = Depends(get_db)):
+    """
+    Get dynamic stock metrics (physical, reserved, available) for a specific product variant.
+    """
+    return get_stock_metrics(variant_id, db)
+
+@router.post("/adjust")
+def adjust_inventory(
+    payload: StockAdjustRequest,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"])),
+):
+    """
+    Manually append a stock adjustment entry in the inventory ledger.
+    """
+    variant = db.execute(
+        select(ProductVariant).where(ProductVariant.variant_id == payload.variant_id)
+    ).scalar_one_or_none()
+    if not variant:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Variant not found")
+
+    entry = record_ledger_entry(
+        variant_id=payload.variant_id,
+        event_type=payload.event_type,
+        qty=payload.qty,
+        reference_id="MANUAL_ADJUST",
+        db=db,
+        notes=payload.notes
+    )
+    from app.core.database.cache_manager import cache
+    cache.invalidate_prefix("catalog:products:")
+    cache.invalidate_prefix("catalog:product_detail:")
+    return {
+        "message": "Inventory ledger entry recorded successfully",
+        "ledger_id": entry.ledger_id,
+        "variant_id": entry.variant_id,
+        "event_type": entry.event_type,
+        "qty": entry.qty
+    }

Backend/app/api/v1/routers/InvoiceRouter.py

@@ -0,0 +1,21 @@
+"""
+@router InvoiceRouter (Backend/app/api/v1/routers/InvoiceRouter.py)
+"""
+from fastapi import APIRouter
+from pydantic import BaseModel
+import ulid
+
+router = APIRouter(prefix="/api/v1/invoices", tags=["GST Invoice Management"])
+
+@router.get("/{invoice_id}")
+def get_invoice(invoice_id: str):
+    return {
+        "invoice_id": invoice_id,
+        "invoice_no": "C1P2-26-000452",
+        "subtotal": 149.99,
+        "cgst": 13.50,
+        "sgst": 13.50,
+        "igst": 0.00,
+        "total_amount": 176.99,
+        "pdf_url": f"/uploads/invoices/{invoice_id}.pdf"
+    }

Backend/app/api/v1/routers/MasterDataRouter.py

@@ -0,0 +1,42 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from typing import List
+from app.core.database.db_session import get_db
+from app.repositories.geo_repository import geo_repository
+from app.schemas.Geo import CountrySchema, StateSchema, CitySchema
+from app.models.UserModel import User
+from app.core.permissions.RoleChecker import get_current_user
+
+router = APIRouter(prefix="/api/v1/geo", tags=["Geographic Master Data"])
+
+@router.get("/countries", response_model=List[CountrySchema])
+def get_countries(
+    active_only: bool = True,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    return geo_repository.get_countries(db, active_only)
+
+@router.get("/countries/{country_id}/states", response_model=List[StateSchema])
+def get_states(
+    country_id: int,
+    active_only: bool = True,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    country = geo_repository.get_country_by_id(db, country_id)
+    if not country or country.deleted_at is not None:
+        raise HTTPException(status_code=404, detail="Country not found")
+    return geo_repository.get_states_by_country(db, country_id, active_only)
+
+@router.get("/states/{state_id}/cities", response_model=List[CitySchema])
+def get_cities(
+    state_id: int,
+    active_only: bool = True,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    state = geo_repository.get_state_by_id(db, state_id)
+    if not state or state.deleted_at is not None:
+        raise HTTPException(status_code=404, detail="State not found")
+    return geo_repository.get_cities_by_state(db, state_id, active_only)

Backend/app/api/v1/routers/MfaRouter.py

@@ -0,0 +1,76 @@
+from fastapi import APIRouter, Depends, HTTPException, Response, status
+from sqlalchemy.orm import Session
+import base64
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import get_current_user
+from app.models.UserModel import User
+from app.utils.Mfa_util import (
+    generate_mfa_secret,
+    get_mfa_uri,
+    verify_mfa_token,
+    qr_code_png_base64
+)
+
+router = APIRouter(prefix="/api/v1/mfa", tags=["MFA (Two-Factor Authentication)"])
+
+@router.post("/setup", response_class=Response)
+def setup_mfa(
+    user_id: str = None,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    # 1. Determine target user (defaults to self, Super Admin/Admin can specify another user_id)
+    target_id = user_id or current_user.user_id
+    if target_id != current_user.user_id and current_user.role.role_name.lower() not in ["super admin", "admin"]:
+        raise HTTPException(status_code=403, detail="You do not have permission to setup MFA for other users.")
+
+    # 2. Fetch target user
+    user = db.get(User, target_id)
+    if not user or user.deleted_at is not None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    # 3. Generate TOTP secret
+    secret = generate_mfa_secret()
+    user.mfa_secret = secret
+    user.mfa_enabled = False
+    db.commit()
+
+    # 4. Generate QR code bytes
+    uri = get_mfa_uri(user.email, secret)
+    qr_b64 = qr_code_png_base64(uri)
+    qr_bytes = base64.b64decode(qr_b64.split(",")[1])
+
+    return Response(
+        content=qr_bytes,
+        media_type="image/png",
+        headers={
+            "Content-Disposition": "inline; filename=mfa_qr.png"
+        }
+    )
+
+@router.post("/verify")
+def verify_mfa(
+    token: str,
+    user_id: str = None,
+    current_user: User = Depends(get_current_user),
+    db: Session = Depends(get_db)
+):
+    target_id = user_id or current_user.user_id
+    if target_id != current_user.user_id and current_user.role.role_name.lower() not in ["super admin", "admin"]:
+        raise HTTPException(status_code=403, detail="You do not have permission to verify MFA for other users.")
+
+    user = db.get(User, target_id)
+    if not user or user.deleted_at is not None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    if not user.mfa_secret:
+        raise HTTPException(status_code=400, detail="MFA setup has not been initialized. Please call /setup first.")
+
+    if not verify_mfa_token(user.mfa_secret, token):
+        raise HTTPException(status_code=400, detail="Invalid verification code")
+
+    user.mfa_enabled = True
+    db.commit()
+
+    return {"detail": "MFA enabled successfully"}

Backend/app/api/v1/routers/MigrationRouter.py

@@ -0,0 +1,712 @@
+import os
+import io
+import csv
+import uuid
+import shutil
+import zipfile
+import threading
+import datetime
+from typing import List, Dict, Any, Optional
+from fastapi import APIRouter, UploadFile, File, Form, Depends, HTTPException, status
+from pydantic import BaseModel
+from fastapi.responses import Response, StreamingResponse
+from sqlalchemy.orm import Session
+from app.core.database.db_session import get_db, SessionLocal
+import openpyxl
+from openpyxl.styles import Font, PatternFill, Alignment
+from openpyxl.utils import get_column_letter
+
+from app.models.MigrationModel import (
+    MigrationBatch, MigrationJob, MigrationJobCheckpoint, MigrationMediaItem, MigrationError, MediaGroup, MediaAsset,
+    MigrationSnapshot, BatchStatusEnum, JobStatusEnum, PhaseEnum, ImportModeEnum, BatchTypeEnum, MediaItemStatusEnum, RetryStatusEnum
+)
+from app.models.ProductModel import Product, ProductVariant, ProductImage, VariantAttribute, VariantImage
+from app.models.BrandModel import Brand
+from app.models.CategoryModel import Category
+from app.models.DeviceCatalogModel import DeviceSeries, DeviceModel
+from app.services.migration_engine.file_parsers import DataFileParser
+from app.services.migration_engine.column_mapper import ColumnMapper
+from app.services.migration_engine.storage_manager import StorageManager
+from app.services.migration_engine.migration_worker import MigrationWorker
+
+router = APIRouter(prefix="/api/v1/migration", tags=["Data Migration Engine"])
+
+from pathlib import Path
+project_root = Path(__file__).resolve().parents[4]
+UPLOAD_DIR = str(project_root / "uploads" / "migrations")
+os.makedirs(UPLOAD_DIR, exist_ok=True)
+
+# -----------------------------------------------------------------------------
+# Background Worker Daemon Loop
+# -----------------------------------------------------------------------------
+def worker_daemon_loop():
+    worker = MigrationWorker()
+    while True:
+        try:
+            db = SessionLocal()
+            try:
+                claimed = worker.claim_next_job(db)
+                if claimed:
+                    job_id, lease_ver = claimed
+                    worker.process_job(job_id, lease_ver)
+            finally:
+                db.close()
+        except Exception as e:
+            print(f"[WorkerDaemon] Error in worker loop: {e}")
+        time_to_sleep = 2.0
+        import time
+        time.sleep(time_to_sleep)
+
+_worker_thread = threading.Thread(target=worker_daemon_loop, daemon=True)
+_worker_thread.start()
+
+# -----------------------------------------------------------------------------
+# Endpoints
+# -----------------------------------------------------------------------------
+
+@router.get("/template/excel")
+def download_excel_template(db: Session = Depends(get_db)):
+    """
+    Generates dynamic multi-sheet Excel spreadsheet (.xlsx) with styled headers and sample demo data.
+    """
+    wb = openpyxl.Workbook()
+
+    header_fill = PatternFill(start_color="1F2937", end_color="1F2937", fill_type="solid")
+    header_font = Font(name="Calibri", size=11, bold=True, color="FFFFFF")
+
+    sub_header_fill = PatternFill(start_color="374151", end_color="374151", fill_type="solid")
+    sub_header_font = Font(name="Calibri", size=10, bold=True, color="F3F4F6")
+
+    # 1. Products_and_Variants
+    ws1 = wb.active
+    ws1.title = "Products_and_Variants"
+    ws1.views.sheetView[0].showGridLines = True
+
+    headers_products = [
+        "sku", "parent_name", "name", "brand", "parent_category", "category",
+        "is_parent_feature", "device_type", "device_series", "device_model",
+        "price", "cost_price", "stock", "color", "storage", "ram", "material",
+        "warranty_months", "media_key", "barcode", "is_active", "description"
+    ]
+    ws1.append(headers_products)
+
+    products_data = [
+        [
+            "APP-IP15P-CLR-1P", "Apple iPhone 15 Pro Tempered Glass Screen Protector",
+            "Clear Glass - 1 Pack", "Apple", "Mobile Accessories", "Screen Guards",
+            "TRUE", "Mobile", "iPhone 15 Series", "iPhone 15 Pro", 499.00, 180.00,
+            150, "Clear", "N/A", "N/A", "9H Tempered Glass", 6,
+            "apple_iphone_15_pro_screenguard", "8901234567890", "TRUE",
+            "Ultra-clear 9H hardness tempered glass screen guard with anti-scratch coating."
+        ],
+        [
+            "SAM-S24U-ARM-BLK", "Samsung Galaxy S24 Ultra Heavy Duty Armor Case",
+            "Matte Black Shield", "Samsung", "Mobile Accessories", "Back Covers",
+            "TRUE", "Mobile", "Galaxy S Series", "Galaxy S24 Ultra", 999.00, 380.00,
+            75, "Matte Black", "N/A", "N/A", "TPU + Polycarbonate", 12,
+            "samsung_s24_ultra_case", "8901234567892", "TRUE",
+            "Military-grade dual layer shockproof armor cover with magnetic kickstand."
+        ]
+    ]
+    for row in products_data:
+        ws1.append(row)
+
+    for col_num, header in enumerate(headers_products, start=1):
+        cell = ws1.cell(row=1, column=col_num)
+        cell.fill = header_fill
+        cell.font = header_font
+        cell.alignment = Alignment(horizontal="center", vertical="center")
+
+    output = io.BytesIO()
+    wb.save(output)
+    output.seek(0)
+
+    return Response(
+        content=output.getvalue(),
+        media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        headers={"Content-Disposition": "attachment; filename=iFixKart_Bulk_Import_Demo_Template.xlsx"}
+    )
+
+@router.get("/template/zip")
+def download_zip_template():
+    """
+    Generates sample Media ZIP archive template.
+    """
+    output = io.BytesIO()
+    sample_image_bytes = (
+        b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01\x00\x00\x00\x01'
+        b'\x08\x02\x00\x00\x00\x90wS\xde\x00\x00\x00\x0cIDATx\x9cc\xf8\xcf\xc0'
+        b'\x00\x00\x03\x01\x01\x00\x18\xdd\x8d\xb0\x00\x00\x00\x00IEND\xaeB`\x82'
+    )
+
+    with zipfile.ZipFile(output, "w", zipfile.ZIP_DEFLATED) as zf:
+        zf.writestr("README.txt", "iFixKart Media ZIP Template")
+        zf.writestr("apple_iphone_15_pro_screenguard/1_front.png", sample_image_bytes)
+        zf.writestr("samsung_s24_ultra_case/1_main.png", sample_image_bytes)
+
+    output.seek(0)
+    return Response(
+        content=output.getvalue(),
+        media_type="application/zip",
+        headers={"Content-Disposition": "attachment; filename=iFixKart_Media_ZIP_Demo_Template.zip"}
+    )
+
+from app.services.migration_engine.validation_engine import ValidationEngine
+
+@router.post("/preview")
+@router.get("/preview")
+def preview_migration_data(job_id: Optional[str] = None, db: Session = Depends(get_db)):
+    """
+    Dynamic preview endpoint returning mapped file columns and sample rows.
+    """
+    job = None
+    if job_id:
+        job = db.query(MigrationJob).filter(MigrationJob.id == job_id).first()
+    if not job:
+        job = db.query(MigrationJob).order_by(MigrationJob.started_at.desc(), MigrationJob.id.desc()).first()
+
+    if not job:
+        return {"status": "success", "valid": True, "preview_items": []}
+
+    job_dir = StorageManager.get_job_dir(job.id)
+    dataset_dir = os.path.join(job_dir, "dataset")
+    if not os.path.exists(dataset_dir):
+        return {"status": "success", "valid": True, "preview_items": []}
+
+    files = os.listdir(dataset_dir)
+    if not files:
+        return {"status": "success", "valid": True, "preview_items": []}
+
+    filepath = os.path.join(dataset_dir, files[0])
+    fmt = os.path.splitext(filepath)[1].lower().replace(".", "").upper()
+    headers = DataFileParser.get_headers(filepath, fmt)
+    column_maps = ColumnMapper.suggest_mappings(headers)
+
+    preview_items = []
+    for idx, (row_num, row_dict) in enumerate(DataFileParser.stream_rows(filepath, fmt)):
+        if idx >= 10:
+            break
+        mapped = ColumnMapper.apply_mapping(row_dict, column_maps)
+        preview_items.append(mapped)
+
+    return {
+        "status": "success",
+        "job_id": job.id,
+        "valid": True,
+        "headers": headers,
+        "column_maps": column_maps,
+        "preview_items": preview_items
+    }
+
+@router.get("/media-groups/preview")
+@router.post("/media-groups/preview")
+def get_media_groups_preview(db: Session = Depends(get_db)):
+    """
+    Returns indexed MediaGroup records with their assets for the Media Library tab.
+    """
+    groups = db.query(MediaGroup).order_by(MediaGroup.created_at.desc()).all()
+    res = []
+    for g in groups:
+        assets = []
+        for a in g.media_assets:
+            assets.append({
+                "id": a.id,
+                "original_filename": a.original_filename,
+                "cdn_url": a.cdn_url,
+                "thumbnail_url": a.thumbnail_url,
+                "file_size_bytes": a.file_size_bytes,
+                "mime_type": a.mime_type
+            })
+        res.append({
+            "id": g.id,
+            "media_key": g.media_key,
+            "brand_name": g.brand_name,
+            "model_name": g.model_name,
+            "variant_tag": g.variant_tag,
+            "assets_count": len(assets),
+            "media_assets": assets
+        })
+
+    return {
+        "status": "success",
+        "total_count": len(res),
+        "media_groups": res
+    }
+
+@router.post("/dry-run")
+@router.get("/dry-run")
+@router.post("/dry_run")
+@router.get("/dry_run")
+def dry_run_migration_data(job_id: Optional[str] = None, db: Session = Depends(get_db)):
+    """
+    Dynamic dry-run endpoint executing real ValidationEngine checks against uploaded file rows.
+    """
+    job = None
+    if job_id:
+        job = db.query(MigrationJob).filter(MigrationJob.id == job_id).first()
+    if not job:
+        job = db.query(MigrationJob).order_by(MigrationJob.started_at.desc(), MigrationJob.id.desc()).first()
+
+    if not job:
+        return {
+            "status": "success",
+            "message": "No active migration job found to validate.",
+            "valid": True,
+            "total_rows": 0,
+            "valid_rows": 0,
+            "invalid_rows": 0,
+            "errors": [],
+            "warnings": []
+        }
+
+    job_dir = StorageManager.get_job_dir(job.id)
+    dataset_dir = os.path.join(job_dir, "dataset")
+    if not os.path.exists(dataset_dir) or not os.listdir(dataset_dir):
+        return {
+            "status": "success",
+            "message": f"Job {job.id} initialized. Dataset file pending.",
+            "valid": True,
+            "total_rows": 0,
+            "valid_rows": 0,
+            "invalid_rows": 0,
+            "errors": [],
+            "warnings": []
+        }
+
+    filepath = os.path.join(dataset_dir, os.listdir(dataset_dir)[0])
+    fmt = os.path.splitext(filepath)[1].lower().replace(".", "").upper()
+    headers = DataFileParser.get_headers(filepath, fmt)
+    column_maps = ColumnMapper.suggest_mappings(headers)
+
+    mapped_rows = []
+    for row_num, row_dict in DataFileParser.stream_rows(filepath, fmt):
+        mapped = ColumnMapper.apply_mapping(row_dict, column_maps)
+        mapped_rows.append((row_num, mapped))
+
+    total_rows = len(mapped_rows)
+    errors, warnings = ValidationEngine.validate_batch(mapped_rows, db, import_mode="UPSERT")
+
+    invalid_rows_count = len(set(e["row_number"] for e in errors))
+    valid_rows_count = max(0, total_rows - invalid_rows_count)
+
+    job.total_records = total_rows
+    db.commit()
+
+    return {
+        "status": "success",
+        "job_id": job.id,
+        "message": f"Dynamic Dry-Run Validation complete for {total_rows} rows.",
+        "valid": invalid_rows_count == 0,
+        "total_rows": total_rows,
+        "valid_rows": valid_rows_count,
+        "invalid_rows": invalid_rows_count,
+        "errors": errors[:100],
+        "warnings": warnings[:100],
+        "headers": headers,
+        "column_maps": column_maps
+    }
+
+@router.post("/execute")
+@router.get("/execute")
+def execute_migration_batch(job_id: Optional[str] = None, db: Session = Depends(get_db)):
+    """
+    Dynamic execution endpoint enqueuing job for persistent MigrationWorker processing.
+    """
+    job = None
+    if job_id:
+        job = db.query(MigrationJob).filter(MigrationJob.id == job_id).first()
+    if not job:
+        job = db.query(MigrationJob).order_by(MigrationJob.started_at.desc(), MigrationJob.id.desc()).first()
+
+    if not job:
+        raise HTTPException(status_code=404, detail="No migration job found to execute.")
+
+    # Only mark as QUEUED if the job is not already RUNNING or COMPLETED
+    if job.status not in (JobStatusEnum.RUNNING, JobStatusEnum.COMPLETED):
+        job.status = JobStatusEnum.QUEUED
+        if job.current_phase == PhaseEnum.UPLOAD:
+            job.current_phase = PhaseEnum.VALIDATE
+        db.commit()
+
+    return {
+        "status": "success",
+        "job_id": job.id,
+        "batch_id": job.batch_id,
+        "job_status": job.status,
+        "message": f"Migration Job {job.id} enqueued. Background worker thread will execute pipeline phases."
+    }
+
+
+
+@router.post("/upload")
+async def upload_migration_file(
+    file: Optional[UploadFile] = File(None),
+    media_file: Optional[UploadFile] = File(None),
+    batch_type: str = Form("PRODUCTS"),
+    import_mode: str = Form("UPSERT"),
+    user_id: str = Form("admin-user-01"),
+    db: Session = Depends(get_db)
+):
+    """
+    64KB Streamed Upload Endpoint. Streams dataset spreadsheet and/or ZIP archive directly to disk,
+    creates MigrationBatch & MigrationJob, and returns immediate job_id in QUEUED status.
+    """
+    if not file and not media_file:
+        raise HTTPException(status_code=400, detail="Please upload a dataset file (.xlsx/.csv) or media ZIP archive (.zip).")
+
+    batch_id = str(uuid.uuid4())
+    job_id = str(uuid.uuid4())
+    job_dir = StorageManager.get_job_dir(job_id)
+
+    batch = MigrationBatch(
+        id=batch_id,
+        batch_type=BatchTypeEnum(batch_type) if batch_type in BatchTypeEnum.__members__ else BatchTypeEnum.PRODUCTS,
+        user_id=user_id,
+        import_mode=ImportModeEnum(import_mode) if import_mode in ImportModeEnum.__members__ else ImportModeEnum.UPSERT,
+        status=BatchStatusEnum.PENDING
+    )
+    db.add(batch)
+
+    file_name = ""
+    file_format = "CSV"
+
+    if file:
+        file_name = file.filename
+        ext = os.path.splitext(file.filename)[1].lower().replace(".", "")
+        file_format = ext.upper()
+        dataset_dest = os.path.join(job_dir, "dataset", file.filename)
+        await StorageManager.save_upload_stream_async(file, dataset_dest)
+
+    if media_file:
+        archive_dest = os.path.join(job_dir, "archives", media_file.filename)
+        await StorageManager.save_upload_stream_async(media_file, archive_dest)
+        if not file_name:
+            file_name = media_file.filename
+            file_format = "ZIP"
+
+    job = MigrationJob(
+        id=job_id,
+        batch_id=batch_id,
+        job_type=batch_type,
+        is_dry_run=False,
+        file_name=file_name,
+        file_format=file_format,
+        status=JobStatusEnum.QUEUED,
+        current_phase=PhaseEnum.UPLOAD
+    )
+    db.add(job)
+    db.commit()
+
+    return {
+        "status": "success",
+        "job_id": job.id,
+        "batch_id": batch.id,
+        "job_status": job.status,
+        "current_phase": job.current_phase,
+        "message": f"File uploaded safely to disk. Migration Job {job.id} queued for background processing."
+    }
+
+@router.get("/batches")
+@router.get("/jobs")
+@router.get("/history")
+def list_migration_jobs(db: Session = Depends(get_db)):
+    """
+    List all historical migration jobs for the admin dashboard.
+    """
+    jobs = db.query(MigrationJob).order_by(MigrationJob.started_at.desc(), MigrationJob.id.desc()).all()
+    res = []
+    for j in jobs:
+        dur_secs = 0
+        if j.started_at:
+            end_t = j.completed_at or j.finished_at or datetime.datetime.utcnow()
+            dur_secs = max(0, int((end_t - j.started_at).total_seconds()))
+
+        dur_mins = dur_secs // 60
+        dur_s = dur_secs % 60
+        duration_fmt = f"{dur_mins}m {dur_s}s" if dur_mins > 0 else f"{dur_s}s"
+
+        res.append({
+            "id": j.id,
+            "job_id": j.id,
+            "batch_id": j.batch_id,
+            "file_name": j.file_name,
+            "file_format": j.file_format,
+            "status": j.status,
+            "current_phase": j.current_phase,
+            "current_batch": j.current_batch,
+            "total_batches": j.total_batches,
+            "processed_records": j.processed_records,
+            "total_records": j.total_records,
+            "successful_records": j.successful_records,
+            "failed_records": j.failed_records,
+            "worker_id": j.worker_id,
+            "heartbeat_at": j.heartbeat_at.isoformat() if j.heartbeat_at else None,
+            "started_at": j.started_at.strftime("%Y-%m-%d %H:%M:%S") if j.started_at else "Pending",
+            "completed_at": j.completed_at.strftime("%Y-%m-%d %H:%M:%S") if j.completed_at else None,
+            "duration_seconds": dur_secs,
+            "duration_formatted": duration_fmt,
+            "error_message": j.error_message
+        })
+    return {"status": "success", "batches": res, "jobs": res}
+
+class BulkDeleteMediaRequest(BaseModel):
+    ids: list[str]
+
+@router.delete("/media-groups/{group_id}")
+def delete_single_media_group(group_id: str, db: Session = Depends(get_db)):
+    db.query(MigrationMediaItem).filter(MigrationMediaItem.id == group_id).delete()
+    db.commit()
+    return {"status": "success", "message": f"Media item {group_id} deleted."}
+
+@router.post("/media-groups/bulk-delete")
+def bulk_delete_media_groups(payload: BulkDeleteMediaRequest, db: Session = Depends(get_db)):
+    if payload.ids:
+        db.query(MigrationMediaItem).filter(MigrationMediaItem.id.in_(payload.ids)).delete(synchronize_session=False)
+        db.commit()
+    return {"status": "success", "message": f"Deleted {len(payload.ids)} media items."}
+
+@router.post("/purge-all")
+@router.post("/purge_all")
+def purge_all_migration_data(db: Session = Depends(get_db)):
+    from sqlalchemy import text
+    try:
+        db.execute(text("DELETE FROM migration_snapshots"))
+        db.execute(text("DELETE FROM migration_errors"))
+        db.execute(text("DELETE FROM migration_job_checkpoints"))
+        db.execute(text("DELETE FROM migration_media_items"))
+        db.execute(text("DELETE FROM migration_jobs"))
+        db.execute(text("DELETE FROM migration_batches"))
+        db.commit()
+    except Exception as e:
+        db.rollback()
+        print(f"Purge warning: {e}")
+    return {"status": "success", "message": "All migration history and media groups purged."}
+
+@router.get("/jobs/{job_id}/status")
+def get_job_telemetry(job_id: str, db: Session = Depends(get_db)):
+    """
+    Fetches real-time telemetry metrics for a migration job.
+    """
+    job = db.query(MigrationJob).filter(MigrationJob.id == job_id).first()
+    if not job:
+        raise HTTPException(status_code=404, detail="Migration job not found")
+
+    checkpoints = db.query(MigrationJobCheckpoint).filter(MigrationJobCheckpoint.job_id == job_id).all()
+    phase_checkpoints = {}
+    for c in checkpoints:
+        phase_checkpoints[c.phase] = {
+            "last_successful_batch": c.last_successful_batch,
+            "total_batches": c.total_batches,
+            "processed_records": c.processed_records,
+            "failed_records": c.failed_records
+        }
+
+    pct = 0.0
+    if job.total_records > 0:
+        pct = round((job.processed_records / job.total_records) * 100.0, 2)
+
+    elapsed_seconds = 0
+    if job.started_at:
+        end_time = job.completed_at or job.finished_at or datetime.datetime.utcnow()
+        elapsed_seconds = max(0, int((end_time - job.started_at).total_seconds()))
+
+    processing_rate = 0.0
+    estimated_seconds_remaining = None
+    if job.status == JobStatusEnum.QUEUED:
+        eta_formatted = "Queued in Line"
+    elif job.status == JobStatusEnum.RUNNING and job.processed_records == 0:
+        eta_formatted = "Starting Batch Processing..."
+    elif job.status == JobStatusEnum.COMPLETED:
+        eta_formatted = "0s (Completed)"
+    else:
+        eta_formatted = "Calculating..."
+
+    if elapsed_seconds > 0 and job.processed_records > 0:
+        processing_rate = round(job.processed_records / elapsed_seconds, 2)
+        remaining_records = max(0, job.total_records - job.processed_records)
+        if remaining_records > 0 and processing_rate > 0:
+            estimated_seconds_remaining = int(remaining_records / processing_rate)
+            mins = estimated_seconds_remaining // 60
+            secs = estimated_seconds_remaining % 60
+            eta_formatted = f"{mins}m {secs}s" if mins > 0 else f"{secs}s"
+        elif remaining_records == 0 and job.status == JobStatusEnum.COMPLETED:
+            eta_formatted = "0s (Completed)"
+
+    elapsed_mins = elapsed_seconds // 60
+    elapsed_secs = elapsed_seconds % 60
+    elapsed_formatted = f"{elapsed_mins}m {elapsed_secs}s" if elapsed_mins > 0 else f"{elapsed_secs}s"
+
+    return {
+        "status": "success",
+        "job_id": job.id,
+        "batch_id": job.batch_id,
+        "job_status": job.status,
+        "current_phase": job.current_phase,
+        "worker_id": job.worker_id,
+        "heartbeat_at": job.heartbeat_at.isoformat() if job.heartbeat_at else None,
+        "lease_version": job.lease_version,
+        "current_batch": job.current_batch,
+        "total_batches": job.total_batches,
+        "last_successful_batch": job.last_successful_batch,
+        "processed_records": job.processed_records,
+        "total_records": job.total_records,
+        "successful_records": job.successful_records,
+        "failed_records": job.failed_records,
+        "expected_products": job.expected_products,
+        "expected_variants": job.expected_variants,
+        "expected_media_items": job.expected_media_items,
+        "progress_percentage": pct,
+        "elapsed_seconds": elapsed_seconds,
+        "elapsed_formatted": elapsed_formatted,
+        "processing_rate": processing_rate,
+        "estimated_seconds_remaining": estimated_seconds_remaining,
+        "eta_formatted": eta_formatted,
+        "phase_checkpoints": phase_checkpoints,
+        "error_message": job.error_message
+    }
+
+@router.get("/jobs/{job_id}/stream")
+def stream_job_telemetry(job_id: str):
+    """
+    Streams real-time Server-Sent Events (SSE) telemetry data for a migration job.
+    """
+    def event_generator():
+        import json, time
+        max_duration = 3600  # Max 1 hour stream safeguard
+        start_stream = time.time()
+        
+        while time.time() - start_stream < max_duration:
+            local_db = SessionLocal()
+            try:
+                telemetry = get_job_telemetry(job_id=job_id, db=local_db)
+                data_str = json.dumps(telemetry, default=str)
+                yield f"data: {data_str}\n\n"
+                
+                job_status = telemetry.get("job_status")
+                if job_status in [JobStatusEnum.COMPLETED, JobStatusEnum.FAILED, JobStatusEnum.CANCELLED, "COMPLETED", "FAILED", "CANCELLED"]:
+                    break
+            except Exception as e:
+                err_payload = json.dumps({"status": "error", "error_message": str(e)})
+                yield f"data: {err_payload}\n\n"
+                break
+            finally:
+                local_db.close()
+                
+            time.sleep(1.0)
+
+    return StreamingResponse(event_generator(), media_type="text/event-stream")
+
+@router.post("/jobs/{job_id}/cancel")
+def cancel_job(job_id: str, db: Session = Depends(get_db)):
+    """
+    Flags job status as CANCELLING. Worker finishes active batch transaction before halting cleanly.
+    """
+    job = db.query(MigrationJob).filter(MigrationJob.id == job_id).first()
+    if not job:
+        raise HTTPException(status_code=404, detail="Migration job not found")
+
+    if job.status in (JobStatusEnum.COMPLETED, JobStatusEnum.CANCELLED, JobStatusEnum.FAILED):
+        return {"status": "info", "message": f"Job is already in terminal status {job.status}"}
+
+    job.status = JobStatusEnum.CANCELLING
+    job.cancel_requested_at = datetime.datetime.utcnow()
+    db.commit()
+
+    return {"status": "success", "message": f"Cancellation requested for job {job_id}. Worker will halt cleanly after current batch finishes."}
+
+@router.post("/jobs/{job_id}/resume")
+def resume_job(job_id: str, db: Session = Depends(get_db)):
+    """
+    Resumes an interrupted, cancelled, or failed job from its last successful phase checkpoint.
+    """
+    job = db.query(MigrationJob).filter(MigrationJob.id == job_id).first()
+    if not job:
+        raise HTTPException(status_code=404, detail="Migration job not found")
+
+    if job.status == JobStatusEnum.RUNNING:
+        return {"status": "info", "message": "Job is already running."}
+
+    job.status = JobStatusEnum.QUEUED
+    job.cancel_requested_at = None
+    job.error_message = None
+    db.commit()
+
+    return {"status": "success", "message": f"Job {job_id} re-queued and will resume from phase {job.current_phase} batch {job.last_successful_batch}."}
+
+@router.get("/jobs/{job_id}/errors/export")
+def export_job_errors(job_id: str, db: Session = Depends(get_db)):
+    """
+    Exports CSV failure report: Row Number, SKU, Product Name, File Name, Phase, Error Type, Error Message, Retry Status.
+    """
+    job = db.query(MigrationJob).filter(MigrationJob.id == job_id).first()
+    if not job:
+        raise HTTPException(status_code=404, detail="Migration job not found")
+
+    errors = db.query(MigrationError).filter(MigrationError.job_id == job_id).order_by(MigrationError.row_number.asc()).all()
+
+    output = io.StringIO()
+    writer = csv.writer(output)
+    writer.writerow([
+        "Row Number", "SKU", "Product Name", "File Name", "Entity Type",
+        "Phase", "Error Type", "Severity", "Error Message", "Suggested Fix", "Retry Status"
+    ])
+
+    for e in errors:
+        writer.writerow([
+            e.row_number, e.sku or "", e.product_name or "", e.file_name or "", e.entity_type or "",
+            e.phase, e.error_type, e.severity, e.error_message, e.suggested_fix or "", e.retry_status
+        ])
+
+    output.seek(0)
+    return StreamingResponse(
+        io.BytesIO(output.getvalue().encode("utf-8")),
+        media_type="text/csv",
+        headers={"Content-Disposition": f"attachment; filename=Migration_Errors_Job_{job_id[:8]}.csv"}
+    )
+
+@router.get("/jobs/{job_id}/media")
+def list_job_media(
+    job_id: str,
+    page: int = 1,
+    limit: int = 50,
+    search: Optional[str] = None,
+    db: Session = Depends(get_db)
+):
+    """
+    Server-side paginated media gallery for admin console to view 30,000+ indexed media assets without DOM lag.
+    """
+    query = db.query(MigrationMediaItem).filter(MigrationMediaItem.job_id == job_id)
+    if search:
+        query = query.filter(
+            (MigrationMediaItem.file_name.ilike(f"%{search}%")) |
+            (MigrationMediaItem.media_key.ilike(f"%{search}%")) |
+            (MigrationMediaItem.sha256.ilike(f"%{search}%"))
+        )
+
+    total_count = query.count()
+    items = query.offset((page - 1) * limit).limit(limit).all()
+
+    res = []
+    for item in items:
+        res.append({
+            "id": item.id,
+            "batch_number": item.batch_number,
+            "file_name": item.file_name,
+            "archive_name": item.archive_name,
+            "zip_entry_path": item.zip_entry_path,
+            "media_key": item.media_key,
+            "sha256": item.sha256,
+            "storage_path": item.storage_path,
+            "cdn_url": f"/uploads/migrations/{job_id}/media/{item.sha256[:2]}/{item.sha256}.jpg" if item.sha256 else None,
+            "status": item.status,
+            "error": item.error
+        })
+
+    return {
+        "status": "success",
+        "total_count": total_count,
+        "page": page,
+        "limit": limit,
+        "total_pages": (total_count // limit) + (1 if total_count % limit > 0 else 0),
+        "items": res
+    }

Backend/app/api/v1/routers/OrderRouter.py

@@ -0,0 +1,188 @@
+"""
+@router OrderRouter (Backend/app/api/v1/routers/OrderRouter.py)
+@purpose Database-driven order history and detail tracking for storefront customers, protected by JWT authentication.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from pydantic import BaseModel
+from typing import List, Optional
+from sqlalchemy.orm import Session
+from datetime import datetime
+import ulid
+
+from app.core.database.db_session import get_db
+from app.api.v1.routers.CustomerProfileRouter import get_current_customer
+from app.models.EcomCustomerModel import EcomCustomer
+from app.models.OrderModel import Order, OrderItem, OrderStatusHistory
+from app.services.InventoryService import record_ledger_entry
+
+router = APIRouter(prefix="/api/v1/orders", tags=["Order Management"])
+
+# --- Schemas ---
+
+class OrderItemSchema(BaseModel):
+    product_name: str
+    sku: str
+    quantity: int
+    unit_price: float
+    total_price: float
+
+class OrderDetailResponse(BaseModel):
+    order_id: str
+    order_no: str
+    total_amount: float
+    discount_amount: float
+    tax_amount: float
+    shipping_cost: float
+    final_amount: float
+    status: str
+    payment_status: str
+    fulfillment_status: str
+    shipping_address_json: Optional[str] = None
+    billing_address_json: Optional[str] = None
+    tracking_number: Optional[str] = None
+    courier_name: Optional[str] = None
+    created_at: datetime
+    items: List[OrderItemSchema]
+
+class OrderListResponse(BaseModel):
+    order_id: str
+    order_no: str
+    final_amount: float
+    status: str
+    payment_status: str
+    created_at: datetime
+
+# --- Endpoints ---
+
+@router.get("", response_model=List[OrderListResponse])
+def list_customer_orders(
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    List order history for the logged-in customer.
+    """
+    orders = (
+        db.query(Order)
+        .filter(Order.customer_id == customer.customer_id)
+        .order_by(Order.created_at.desc())
+        .all()
+    )
+    return [
+        OrderListResponse(
+            order_id=o.order_id,
+            order_no=o.order_no,
+            final_amount=float(o.final_amount),
+            status=o.status,
+            payment_status=o.payment_status,
+            created_at=o.created_at
+        ) for o in orders
+    ]
+
+@router.get("/{order_id}", response_model=OrderDetailResponse)
+def get_order_details(
+    order_id: str,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Retrieve full details for a specific order. Enforces customer ownership.
+    """
+    order = (
+        db.query(Order)
+        .filter(Order.order_id == order_id, Order.customer_id == customer.customer_id)
+        .first()
+    )
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Order not found"
+        )
+
+    return OrderDetailResponse(
+        order_id=order.order_id,
+        order_no=order.order_no,
+        total_amount=float(order.total_amount),
+        discount_amount=float(order.discount_amount),
+        tax_amount=float(order.tax_amount),
+        shipping_cost=float(order.shipping_cost),
+        final_amount=float(order.final_amount),
+        status=order.status,
+        payment_status=order.payment_status,
+        fulfillment_status=order.fulfillment_status,
+        shipping_address_json=order.shipping_address_json,
+        billing_address_json=order.billing_address_json,
+        tracking_number=order.tracking_number,
+        courier_name=order.courier_name,
+        created_at=order.created_at,
+        items=[
+            OrderItemSchema(
+                product_name=item.product_name,
+                sku=item.sku,
+                quantity=item.quantity,
+                unit_price=float(item.unit_price),
+                total_price=float(item.total_price)
+            ) for item in order.items
+        ]
+    )
+
+@router.post("/{order_id}/cancel")
+def cancel_order(
+    order_id: str,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Cancel an order if it is in an editable state (ORDER_CREATED or PAYMENT_PENDING).
+    Releases ONLINE_RESERVE inventory reservations.
+    """
+    order = (
+        db.query(Order)
+        .filter(Order.order_id == order_id, Order.customer_id == customer.customer_id)
+        .first()
+    )
+    if not order:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Order not found"
+        )
+
+    if order.status not in ["ORDER_CREATED", "PAYMENT_PENDING"]:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=f"Order cannot be cancelled. Current status is {order.status}."
+        )
+
+    previous_status = order.status
+
+    for item in order.items:
+        record_ledger_entry(
+            variant_id=item.variant_id,
+            event_type="ONLINE_RESERVE_RELEASE",
+            qty=item.quantity,
+            reference_id=order.order_id,
+            db=db,
+            notes=f"Released reservation for customer-cancelled order {order.order_no}",
+            commit=False,
+        )
+
+    history = OrderStatusHistory(
+        history_id=str(ulid.ULID()),
+        order_id=order.order_id,
+        previous_status=previous_status,
+        new_status="CANCELLED",
+        changed_by=customer.email,
+        reason="Cancelled by customer from profile portal"
+    )
+    db.add(history)
+
+    order.status = "CANCELLED"
+    order.fulfillment_status = "CANCELLED"
+    if order.payment_status == "PAYMENT_CAPTURED":
+        order.payment_status = "REFUNDED"
+    else:
+        order.payment_status = "PAYMENT_FAILED"
+
+    db.commit()
+
+    return {"message": "Order cancelled successfully", "order_id": order_id}

Backend/app/api/v1/routers/PaymentRouter.py

@@ -0,0 +1,128 @@
+"""
+@router PaymentRouter (Backend/app/api/v1/routers/PaymentRouter.py)
+@purpose API router handling Razorpay order initiation, cryptographic verification, status checks, and webhook ingestion.
+"""
+from fastapi import APIRouter, Depends, HTTPException, Request, Header, status
+from sqlalchemy.orm import Session
+from pydantic import BaseModel
+from typing import Optional
+
+from app.core.database.db_session import get_db
+from app.api.v1.routers.CustomerProfileRouter import get_current_customer
+from app.models.EcomCustomerModel import EcomCustomer
+from app.models.PaymentLedgerModel import PaymentLedger
+from app.core.payment_orchestrator import payment_orchestrator
+
+router = APIRouter(prefix="/api/v1/payment", tags=["Razorpay Payment Engine"])
+
+# --- Request / Response Models ---
+
+class PaymentInitiateRequest(BaseModel):
+    order_id: str
+
+class PaymentInitiateResponse(BaseModel):
+    order_id: str
+    rzp_order_id: str
+    rzp_key_id: str
+    amount: int
+    currency: str
+    security_token: str
+
+class PaymentVerifyRequest(BaseModel):
+    order_id: str
+    razorpay_order_id: str
+    razorpay_payment_id: str
+    razorpay_signature: str
+
+@router.post("/initiate", response_model=PaymentInitiateResponse)
+def initiate_payment(
+    payload: PaymentInitiateRequest,
+    request: Request,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Step 1: Initiate payment intent for an e-commerce order (creates Razorpay Order).
+    """
+    client_ip = request.client.host if request.client else None
+    user_agent = request.headers.get("user-agent")
+
+    result = payment_orchestrator.initiate_payment(
+        db, payload.order_id, client_ip=client_ip, user_agent=user_agent
+    )
+
+    if "error" in result:
+        raise HTTPException(status_code=result["status_code"], detail=result["error"])
+
+    return result
+
+@router.post("/verify")
+def verify_payment(
+    payload: PaymentVerifyRequest,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Step 2: Cryptographic signature verification + secondary server-side provider fetch.
+    """
+    result = payment_orchestrator.verify_payment(
+        db,
+        order_id=payload.order_id,
+        rzp_order_id=payload.razorpay_order_id,
+        rzp_payment_id=payload.razorpay_payment_id,
+        rzp_signature=payload.razorpay_signature
+    )
+
+    if "error" in result:
+        raise HTTPException(status_code=result["status_code"], detail=result["error"])
+
+    return result
+
+@router.get("/status/{order_id}")
+def get_payment_status(
+    order_id: str,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """
+    Returns latest payment ledger status for an order.
+    """
+    entry = (
+        db.query(PaymentLedger)
+        .filter(PaymentLedger.order_id == order_id)
+        .order_by(PaymentLedger.created_at.desc())
+        .first()
+    )
+    if not entry:
+        raise HTTPException(status_code=404, detail="No payment session found for this order")
+
+    return {
+        "order_id": order_id,
+        "payment_id": entry.payment_id,
+        "provider": entry.provider,
+        "status": entry.status,
+        "transaction_ref": entry.transaction_ref,
+        "amount": float(entry.amount),
+        "currency": entry.currency,
+        "created_at": entry.created_at
+    }
+
+@router.post("/webhook")
+async def razorpay_webhook(
+    request: Request,
+    db: Session = Depends(get_db)
+):
+    """
+    Asynchronous Webhook receiver with HMAC verification and idempotency check.
+    """
+    raw_body = await request.body()
+    signature = request.headers.get("X-Razorpay-Signature") or request.headers.get("x-razorpay-signature")
+
+    if not signature:
+        raise HTTPException(status_code=400, detail="Missing X-Razorpay-Signature header")
+
+    success = payment_orchestrator.process_webhook(db, raw_body, signature)
+    if not success:
+        return {"status": "ignored", "reason": "invalid_signature_or_payload"}
+
+    return {"status": "SUCCESS"}

Backend/app/api/v1/routers/PosSyncRouter.py

@@ -0,0 +1,281 @@
+"""
+@router PosSyncRouter (Backend/app/api/v1/routers/PosSyncRouter.py)
+Fully Dynamic Database-Driven POS Synchronization Gateway (Zero Hardcoded Data)
+"""
+import ulid
+from datetime import datetime, date
+from typing import List, Optional
+from fastapi import APIRouter, Depends, HTTPException, status
+from pydantic import BaseModel
+from sqlalchemy import select, func, desc
+from sqlalchemy.orm import Session
+from app.core.database.db_session import get_db
+from app.models.POSTerminalModel import POSTerminal, POSTransactionLog
+
+router = APIRouter(prefix="/api/v1/pos", tags=["Offline POS Synchronization"])
+
+
+class POSTransactionItem(BaseModel):
+    variant_id: str
+    qty: int
+    unit_price: float
+
+
+class POSTransaction(BaseModel):
+    pos_transaction_id: str
+    local_sequence: int
+    invoice_no: str
+    total_amount: float
+    created_at: str
+    items: List[POSTransactionItem]
+
+
+class POSSyncPayload(BaseModel):
+    device_id: str
+    terminal_id: str
+    store_id: str
+    transactions: List[POSTransaction]
+
+
+class RegisterTerminalRequest(BaseModel):
+    terminal_id: str
+    store_name: str
+    ip_address: Optional[str] = "127.0.0.1"
+
+
+@router.post("/terminals/register")
+def register_pos_terminal(payload: RegisterTerminalRequest, db: Session = Depends(get_db)):
+    """
+    Dynamically registers or updates a POS terminal.
+    """
+    terminal = db.execute(
+        select(POSTerminal).where(POSTerminal.terminal_id == payload.terminal_id)
+    ).scalar_one_or_none()
+
+    if not terminal:
+        terminal = POSTerminal(
+            terminal_id=payload.terminal_id,
+            store_name=payload.store_name,
+            status="ONLINE",
+            ip_address=payload.ip_address,
+            last_heartbeat=datetime.utcnow(),
+            synced_today=0,
+            pending_queue=0,
+        )
+        db.add(terminal)
+    else:
+        terminal.store_name = payload.store_name
+        terminal.ip_address = payload.ip_address
+        terminal.status = "ONLINE"
+        terminal.last_heartbeat = datetime.utcnow()
+
+    db.commit()
+    db.refresh(terminal)
+
+    return {
+        "status": "SUCCESS",
+        "message": f"Terminal '{terminal.terminal_id}' registered successfully.",
+        "terminal_id": terminal.terminal_id,
+        "store_name": terminal.store_name,
+    }
+
+
+@router.post("/sync")
+def sync_pos_transactions(payload: POSSyncPayload, db: Session = Depends(get_db)):
+    """
+    Idempotent database-persisted synchronization gateway for offline POS transactions.
+    Dynamically registers unknown terminals upon sync submission.
+    """
+    terminal = db.execute(
+        select(POSTerminal).where(POSTerminal.terminal_id == payload.terminal_id)
+    ).scalar_one_or_none()
+
+    if not terminal:
+        terminal = POSTerminal(
+            terminal_id=payload.terminal_id,
+            store_name=payload.store_id or f"Store ({payload.terminal_id})",
+            status="ONLINE",
+            last_heartbeat=datetime.utcnow(),
+            synced_today=0,
+            pending_queue=0,
+        )
+        db.add(terminal)
+        db.commit()
+        db.refresh(terminal)
+
+    processed = []
+    for tx in payload.transactions:
+        # Check idempotency (prevent duplicate syncs)
+        existing = db.execute(
+            select(POSTransactionLog).where(
+                POSTransactionLog.pos_transaction_id == tx.pos_transaction_id
+            )
+        ).scalar_one_or_none()
+
+        if existing:
+            processed.append({
+                "pos_transaction_id": tx.pos_transaction_id,
+                "status": "ALREADY_SYNCED",
+                "invoice_no": tx.invoice_no,
+            })
+            continue
+
+        log_entry = POSTransactionLog(
+            sync_id=f"POS-LOG-{str(ulid.ULID())[:8]}",
+            terminal_id=terminal.terminal_id,
+            invoice_no=tx.invoice_no,
+            pos_transaction_id=tx.pos_transaction_id,
+            items_count=len(tx.items),
+            total_amount=tx.total_amount,
+            status="SYNCED",
+            created_at=datetime.utcnow(),
+        )
+        db.add(log_entry)
+
+        terminal.synced_today = (terminal.synced_today or 0) + 1
+        terminal.last_heartbeat = datetime.utcnow()
+        terminal.status = "ONLINE"
+
+        processed.append({
+            "pos_transaction_id": tx.pos_transaction_id,
+            "status": "SYNCED",
+            "invoice_no": tx.invoice_no,
+        })
+
+    db.commit()
+
+    return {
+        "status": "SUCCESS",
+        "synced_count": len(processed),
+        "terminal_id": payload.terminal_id,
+        "results": processed,
+    }
+
+
+@router.get("/status")
+def get_pos_sync_status(db: Session = Depends(get_db)):
+    """
+    Returns live health telemetry for offline POS sync gateways and store terminals strictly from MySQL DB.
+    """
+    terminals = db.execute(select(POSTerminal)).scalars().all()
+
+    today_start = datetime.combine(date.today(), datetime.min.time())
+
+    revenue_today = db.execute(
+        select(func.sum(POSTransactionLog.total_amount)).where(
+            POSTransactionLog.created_at >= today_start,
+            POSTransactionLog.status == "SYNCED",
+        )
+    ).scalar() or 0.0
+
+    synced_today_total = db.execute(
+        select(func.count(POSTransactionLog.sync_id)).where(
+            POSTransactionLog.created_at >= today_start,
+            POSTransactionLog.status == "SYNCED",
+        )
+    ).scalar() or 0
+
+    pending_retries = db.execute(
+        select(func.count(POSTransactionLog.sync_id)).where(
+            POSTransactionLog.status == "PENDING_RETRY"
+        )
+    ).scalar() or 0
+
+    terminals_list = []
+    now = datetime.utcnow()
+    for t in terminals:
+        time_diff = (now - t.last_heartbeat).total_seconds() if t.last_heartbeat else 99999
+        if time_diff < 60:
+            heartbeat_str = f"{int(time_diff)} seconds ago"
+        elif time_diff < 3600:
+            heartbeat_str = f"{int(time_diff // 60)} minutes ago"
+        else:
+            heartbeat_str = f"{int(time_diff // 3600)} hours ago"
+
+        terminals_list.append({
+            "terminal_id": t.terminal_id,
+            "store_name": t.store_name,
+            "status": t.status,
+            "ip_address": t.ip_address or "127.0.0.1",
+            "last_heartbeat": heartbeat_str,
+            "synced_today": t.synced_today,
+            "pending_queue": t.pending_queue,
+        })
+
+    last_log = db.execute(
+        select(POSTransactionLog).order_by(desc(POSTransactionLog.created_at)).limit(1)
+    ).scalar_one_or_none()
+
+    last_sync = last_log.created_at.isoformat() if last_log else None
+
+    return {
+        "gateway_status": "ONLINE",
+        "active_terminals_count": len(terminals),
+        "synced_today_count": synced_today_total,
+        "pending_retries_count": pending_retries,
+        "offline_revenue_today": round(revenue_today, 2),
+        "last_sync_timestamp": last_sync,
+        "terminals": terminals_list,
+    }
+
+
+@router.get("/logs")
+def get_pos_sync_logs(
+    terminal_id: Optional[str] = None,
+    status: Optional[str] = None,
+    limit: int = 50,
+    db: Session = Depends(get_db)
+):
+    """
+    Returns real database audit logs for offline POS sync transaction batches.
+    """
+    stmt = select(POSTransactionLog).order_by(desc(POSTransactionLog.created_at))
+    if terminal_id:
+        stmt = stmt.where(POSTransactionLog.terminal_id == terminal_id)
+    if status:
+        stmt = stmt.where(POSTransactionLog.status == status)
+
+    logs = db.execute(stmt.limit(limit)).scalars().all()
+
+    logs_list = [
+        {
+            "sync_id": log.sync_id,
+            "terminal_id": log.terminal_id,
+            "invoice_no": log.invoice_no,
+            "pos_transaction_id": log.pos_transaction_id,
+            "items_count": log.items_count,
+            "total_amount": log.total_amount,
+            "status": log.status,
+            "created_at": log.created_at.isoformat(),
+            "error_detail": log.error_detail,
+        }
+        for log in logs
+    ]
+
+    total_count = db.execute(select(func.count(POSTransactionLog.sync_id))).scalar() or 0
+
+    return {"total": total_count, "logs": logs_list}
+
+
+@router.post("/terminals/{terminal_id}/reset")
+def reset_terminal_sync(terminal_id: str, db: Session = Depends(get_db)):
+    """
+    Clears pending sync locks or re-syncs state for a given POS terminal in MySQL database.
+    """
+    terminal = db.execute(
+        select(POSTerminal).where(POSTerminal.terminal_id == terminal_id)
+    ).scalar_one_or_none()
+
+    if not terminal:
+        raise HTTPException(status_code=404, detail=f"POS Terminal '{terminal_id}' not found")
+
+    terminal.pending_queue = 0
+    terminal.status = "ONLINE"
+    terminal.last_heartbeat = datetime.utcnow()
+    db.commit()
+
+    return {
+        "status": "SUCCESS",
+        "terminal_id": terminal_id,
+        "message": f"Terminal '{terminal_id}' sync state reset successfully in database.",
+    }

Backend/app/api/v1/routers/ProductCompareRouter.py

@@ -0,0 +1,24 @@
+"""
+@router ProductCompareRouter (Backend/app/api/v1/routers/ProductCompareRouter.py)
+"""
+from fastapi import APIRouter
+from pydantic import BaseModel
+from typing import List
+
+router = APIRouter(prefix="/api/v1/products/compare", tags=["Product Comparison Matrix"])
+
+class CompareRequest(BaseModel):
+    product_ids: List[str]
+
+@router.post("")
+def compare_products(payload: CompareRequest):
+    return {
+        "attributes": ["Screen Size", "RAM", "Price"],
+        "products": [
+            {
+                "product_id": pid,
+                "name": f"Product {pid}",
+                "values": {"Screen Size": "6.1 in", "RAM": "N/A", "Price": 149.99}
+            } for pid in payload.product_ids
+        ]
+    }

Backend/app/api/v1/routers/RolePermissionRouter.py

@@ -0,0 +1,156 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from sqlalchemy import select, func
+from typing import List
+import ulid
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import get_current_user, RoleChecker
+from app.models.UserModel import User
+from app.models.RoleModel import Role
+from app.models.PermissionModel import Permission, RolePermission
+from app.schemas.RolePermission import RoleResponse, RoleCreate, PermissionResponse, RolePermissionUpdate
+
+router = APIRouter(prefix="/api/v1/role-permissions", tags=["Roles & Permissions Control"])
+
+@router.get("/roles/all", response_model=List[RoleResponse])
+def get_all_roles(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"]))
+):
+    stmt = select(Role).where(Role.deleted_at.is_(None))
+    roles = db.execute(stmt).scalars().all()
+    return roles
+
+@router.post("/roles/create", response_model=RoleResponse, status_code=status.HTTP_201_CREATED)
+def create_role(
+    data: RoleCreate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"]))
+):
+    existing = db.execute(select(Role).where(Role.role_name == data.role_name)).scalar_one_or_none()
+    if existing:
+        raise HTTPException(status_code=400, detail="Role name already exists")
+
+    role_id = str(ulid.ULID())
+    new_role = Role(
+        role_id=role_id,
+        role_name=data.role_name,
+        role_prefix=data.role_prefix,
+        description=data.description,
+        is_system=False,
+        is_active=True
+    )
+    db.add(new_role)
+    db.commit()
+    db.refresh(new_role)
+    return new_role
+
+@router.delete("/roles/delete/{role_id}", status_code=status.HTTP_200_OK)
+def delete_role(
+    role_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"]))
+):
+    role = db.execute(select(Role).where(Role.role_id == role_id)).scalar_one_or_none()
+    if not role:
+        raise HTTPException(status_code=404, detail="Role not found")
+    if role.is_system:
+        raise HTTPException(status_code=400, detail="System roles cannot be deleted")
+
+    user_assigned = db.execute(select(User).where(User.role_id == role_id, User.deleted_at.is_(None))).scalars().all()
+    if len(user_assigned) > 0:
+        raise HTTPException(status_code=400, detail="Cannot delete role because it is currently assigned to users")
+
+    role.deleted_at = db.execute(select(func.now())).scalar()
+    db.commit()
+    return {"detail": "Role deleted successfully"}
+
+@router.get("/permissions/all", response_model=List[PermissionResponse])
+def get_all_permissions(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"]))
+):
+    stmt = select(Permission).where(Permission.is_active.is_(True))
+    permissions = db.execute(stmt).scalars().all()
+    if not permissions:
+        # Auto-seed standard platform permissions if permissions table is empty
+        seed_data = [
+            ("users:read", "User Management", "View user lists and profile details"),
+            ("users:write", "User Management", "Create and modify staff user accounts"),
+            ("users:delete", "User Management", "Delete or deactivate staff user accounts"),
+            ("roles:manage", "User Management", "Create, edit and assign roles & access control policies"),
+            ("catalog:read", "Catalog Management", "View categories, brands, devices, and sales products"),
+            ("catalog:write", "Catalog Management", "Create and edit product catalog items"),
+            ("catalog:delete", "Catalog Management", "Delete catalog items, brands, and categories"),
+            ("inventory:manage", "Inventory & Purchases", "Manage stock movements, warehouses, and purchase orders"),
+            ("marketing:manage", "Marketing & Storefront", "Manage homepage sections, banners, and layout controls"),
+            ("settings:manage", "System Infrastructure", "Configure global system settings and security policies"),
+        ]
+        for code, group, desc in seed_data:
+            p_id = str(ulid.ULID())
+            parts = code.split(":")
+            module = parts[0]
+            action = parts[1]
+            resource = "general"
+            permission_code = f"{module}.{resource}.{action}"
+            p_obj = Permission(
+                permission_id=p_id,
+                module=module,
+                resource=resource,
+                action=action,
+                permission_code=permission_code,
+                description=desc,
+                is_active=True
+            )
+            db.add(p_obj)
+        db.commit()
+        permissions = db.execute(stmt).scalars().all()
+    return permissions
+
+@router.get("/roles/{role_id}/permissions", response_model=List[str])
+def get_role_permissions(
+    role_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"]))
+):
+    role = db.execute(select(Role).where(Role.role_id == role_id)).scalar_one_or_none()
+    if not role:
+        raise HTTPException(status_code=404, detail="Role not found")
+
+    stmt = select(RolePermission.permission_id).where(RolePermission.role_id == role_id)
+    perm_ids = db.execute(stmt).scalars().all()
+    return perm_ids
+
+@router.post("/roles/{role_id}/permissions", status_code=status.HTTP_200_OK)
+def update_role_permissions(
+    role_id: str,
+    data: RolePermissionUpdate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin"]))
+):
+    role = db.execute(select(Role).where(Role.role_id == role_id)).scalar_one_or_none()
+    if not role:
+        raise HTTPException(status_code=404, detail="Role not found")
+
+    if role.role_name.lower() == "super admin":
+        raise HTTPException(status_code=400, detail="Permissions for Super Admin role cannot be modified")
+
+    if data.permission_ids:
+        valid_perms = db.execute(select(Permission.permission_id).where(Permission.permission_id.in_(data.permission_ids))).scalars().all()
+        if len(valid_perms) != len(data.permission_ids):
+            raise HTTPException(status_code=400, detail="One or more permission IDs are invalid")
+
+    db.query(RolePermission).filter(RolePermission.role_id == role_id).delete()
+
+    for perm_id in data.permission_ids:
+        link_id = str(ulid.ULID())
+        link = RolePermission(
+            id=link_id,
+            role_id=role_id,
+            permission_id=perm_id
+        )
+        db.add(link)
+
+    db.commit()
+    return {"detail": "Role permissions updated successfully"}

Backend/app/api/v1/routers/ServiceJobRouter.py

@@ -0,0 +1,392 @@
+from fastapi import APIRouter, Depends, Query, HTTPException, status
+from sqlalchemy.orm import Session
+from sqlalchemy import select
+from datetime import date
+from typing import List, Dict, Any, Optional
+
+from app.core.database.db_session import get_db
+from app.core.permissions.RoleChecker import RoleChecker
+from app.models.UserModel import User
+# For customer oauth verification
+from app.api.v1.routers.CheckoutRouter import get_current_customer
+from app.models.EcomCustomerModel import EcomCustomer
+from app.models.ServiceModel import ServiceJob
+
+from app.schemas.ServiceSchema import (
+    ServiceJobCreate, ServiceJobResponse, ServiceJobIntakeCreate, ServiceJobIntakeResponse,
+    ServiceJobInspectionCreate, ServiceJobInspectionResponse, ServiceJobRescheduleRequest,
+    ServiceCatalogResponse
+)
+from app.schemas.ServiceQuoteSchema import ServiceJobQuoteCreate, ServiceJobQuoteResponse
+from app.schemas.ServicePaymentSchema import ServicePaymentCreate, RazorpayVerificationRequest
+
+from app.services.ServiceJobService import ServiceJobService
+from app.services.SlotAllocationService import SlotAllocationService
+from app.services.InspectionService import InspectionService
+from app.services.QuoteService import QuoteService
+from app.services.ServicePaymentService import ServicePaymentService
+from app.repositories.ServiceRepository import ServiceRepository
+
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+security = HTTPBearer(auto_error=False)
+
+def get_current_actor(
+    credentials: Optional[HTTPAuthorizationCredentials] = Depends(security),
+    db: Session = Depends(get_db)
+):
+    if not credentials:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Not authenticated",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+    token = credentials.credentials
+    try:
+        from app.core.Token import verify_access_token
+        payload = verify_access_token(token)
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail=f"Token validation failed: {str(e)}",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+    role = payload.get("role", "")
+    sub = payload.get("sub")
+    if role == "customer":
+        customer = db.query(EcomCustomer).filter(EcomCustomer.customer_id == sub).first()
+        if not customer:
+            raise HTTPException(status_code=404, detail="Customer not found")
+        return {"type": "customer", "obj": customer}
+    elif role in ["Super Admin", "Admin", "Manager", "Technician"]:
+        user = db.query(User).filter(User.user_id == sub).first()
+        if not user:
+            raise HTTPException(status_code=404, detail="Admin user not found")
+        return {"type": "admin", "obj": user}
+    else:
+        raise HTTPException(status_code=403, detail="Not authorized")
+
+router = APIRouter(prefix="/api/v1/service", tags=["Repairs & Scheduling Services"])
+
+job_service = ServiceJobService()
+allocation_service = SlotAllocationService()
+inspection_service = InspectionService()
+quote_service = QuoteService()
+payment_service = ServicePaymentService()
+service_repo = ServiceRepository()
+
+@router.get("/catalog", response_model=List[ServiceCatalogResponse])
+def get_catalog_services(db: Session = Depends(get_db)):
+    """Get active repair & diagnostics catalog options."""
+    return service_repo.get_all_catalog_services(db)
+
+@router.get("/slots/available")
+def get_available_appointment_slots(
+    service_id: str,
+    target_date: date = Query(...),
+    db: Session = Depends(get_db)
+):
+    """Dynamically fetch schedule slots based on technician availability and duration."""
+    return allocation_service.get_available_slots(db, target_date, service_id)
+
+@router.post("/booking/create")
+def create_online_service_booking(
+    payload: ServiceJobCreate,
+    actor: dict = Depends(get_current_actor),
+    db: Session = Depends(get_db)
+):
+    """Book a repair job slot and lock capacity (starts 10-minute slot hold)."""
+    if actor["type"] == "customer":
+        customer_id = actor["obj"].customer_id
+    else:
+        # Admin flow
+        if payload.customer_id:
+            customer_id = payload.customer_id
+        elif payload.customer_name:
+            import ulid
+            parts = payload.customer_name.strip().split(maxsplit=1)
+            first_name = parts[0]
+            last_name = parts[1] if len(parts) > 1 else ""
+            
+            email = payload.customer_email or f"walkin_{str(ulid.ULID())}@ifixkart.com"
+            phone = payload.customer_phone or f"walkin_{str(ulid.ULID())}"
+            
+            existing = None
+            if payload.customer_phone:
+                existing = db.query(EcomCustomer).filter(EcomCustomer.phone == payload.customer_phone).first()
+                
+            if existing:
+                customer_id = existing.customer_id
+            else:
+                new_cust = EcomCustomer(
+                    customer_id=str(ulid.ULID()),
+                    first_name=first_name,
+                    last_name=last_name,
+                    email=email,
+                    phone=phone,
+                    is_active=True
+                )
+                db.add(new_cust)
+                db.commit()
+                db.refresh(new_cust)
+                customer_id = new_cust.customer_id
+        else:
+            raise HTTPException(status_code=400, detail="customer_id or customer_name required for admin booking")
+            
+    return job_service.create_online_booking(db, customer_id, payload)
+
+@router.post("/jobs/{job_id}/intake", response_model=ServiceJobIntakeResponse)
+def record_walk_in_device_intake(
+    job_id: str,
+    payload: ServiceJobIntakeCreate,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin", "Manager"])),
+    db: Session = Depends(get_db)
+):
+    """Record physical checklists (SIM tray, scratches, power status) during device receipt."""
+    return inspection_service.create_device_intake(db, job_id, current_user.user_id, payload)
+
+@router.post("/jobs/{job_id}/inspect", response_model=ServiceJobInspectionResponse)
+def submit_technician_diagnostic_findings(
+    job_id: str,
+    payload: ServiceJobInspectionCreate,
+    current_user: User = Depends(RoleChecker(["Technician", "Super Admin", "Admin"])),
+    db: Session = Depends(get_db)
+):
+    """Technicians submit verified damages, diagnostic results, and notes."""
+    return inspection_service.submit_inspection(db, job_id, current_user.user_id, payload)
+
+@router.post("/jobs/{job_id}/quotes/create", response_model=ServiceJobQuoteResponse)
+def create_or_revise_repair_quote(
+    job_id: str,
+    payload: ServiceJobQuoteCreate,
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin", "Manager", "Technician"])),
+    db: Session = Depends(get_db)
+):
+    """Generate or revise quote estimates. Marks older versions as SUPERSEDED."""
+    return quote_service.create_or_revise_quote(db, job_id, current_user.user_id, payload)
+
+@router.post("/jobs/{job_id}/quotes/{quote_id}/respond", response_model=ServiceJobQuoteResponse)
+def respond_to_quote_estimate(
+    job_id: str,
+    quote_id: str,
+    action: str = Query(..., regex="^(ACCEPT|REJECT)$"),
+    actor: dict = Depends(get_current_actor),
+    db: Session = Depends(get_db)
+):
+    """Customers or admins accept or reject estimates."""
+    from app.models.ServiceModel import ServiceJob as _SJ
+    from app.models.ServiceQuoteModel import ServiceJobQuote as _SJQ
+    quote = db.get(_SJQ, quote_id)
+    if not quote:
+        from fastapi import HTTPException
+        raise HTTPException(status_code=404, detail="Quote not found")
+    job = db.get(_SJ, quote.service_job_id)
+    if not job:
+        from fastapi import HTTPException
+        raise HTTPException(status_code=404, detail="Job not found")
+    # Admins/Technicians can respond on behalf of customers
+    if actor["type"] == "customer":
+        customer_id = actor["obj"].customer_id
+    else:
+        customer_id = job.customer_id  # admin acting on behalf
+    if action == "REJECT":
+        result = quote_service.respond_to_quote(db, quote_id, customer_id, action)
+        refund_res = payment_service.process_quote_rejection_refund(db, quote.service_job_id)
+        result.update(refund_res)
+        return result
+    return quote_service.respond_to_quote(db, quote_id, customer_id, action)
+
+@router.post("/jobs/{job_id}/payments/initiate")
+def initiate_milestone_payment(
+    job_id: str,
+    payload: ServicePaymentCreate,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """Generate Razorpay order for advance deposits or final balances."""
+    return payment_service.initiate_milestone_payment(
+        db, job_id, customer.customer_id, payload.payment_type, payload.quote_id
+    )
+
+@router.post("/payments/verify")
+def verify_milestone_payment(
+    payload: RazorpayVerificationRequest,
+    customer: EcomCustomer = Depends(get_current_customer),
+    db: Session = Depends(get_db)
+):
+    """Verify cryptographic Razorpay payment signature callback."""
+    return payment_service.verify_milestone_payment(db, payload)
+
+@router.post("/jobs/{job_id}/reschedule")
+def reschedule_active_appointment(
+    job_id: str,
+    payload: ServiceJobRescheduleRequest,
+    actor: dict = Depends(get_current_actor),
+    db: Session = Depends(get_db)
+):
+    """Reschedule slot time. Cancels old slot, locks new slot, logs audit trail."""
+    if actor["type"] == "customer":
+        customer_id = actor["obj"].customer_id
+    else:
+        # Admin is rescheduling
+        job = db.get(ServiceJob, job_id)
+        if not job:
+            raise HTTPException(status_code=404, detail="Job not found")
+        customer_id = job.customer_id
+    return job_service.reschedule_appointment(db, job_id, customer_id, payload)
+
+@router.get("/jobs/{job_id}")
+def get_service_job_details(
+    job_id: str,
+    actor: dict = Depends(get_current_actor),
+    db: Session = Depends(get_db)
+):
+    """Retrieve service job, current appointment, timeline events, and active quotes."""
+    job = db.get(ServiceJob, job_id) or db.query(ServiceJob).filter(ServiceJob.job_no == job_id).first()
+    if not job:
+        raise HTTPException(status_code=404, detail="Service job not found")
+
+    if actor["type"] == "customer" and job.customer_id != actor["obj"].customer_id:
+        raise HTTPException(status_code=403, detail="Not authorized to view this job")
+
+    from app.models.ServiceModel import ServiceAppointment, ServiceJobEvent
+    from app.models.ServiceQuoteModel import ServiceJobQuote
+    from app.models.ServicePaymentModel import ServicePayment
+
+    # Active appointment
+    app_stmt = select(ServiceAppointment).where(
+        ServiceAppointment.service_job_id == job.job_id,
+        ServiceAppointment.status.in_(["HELD", "CONFIRMED"])
+    )
+    appt = db.execute(app_stmt).scalar_one_or_none()
+
+    # Timeline events
+    event_stmt = select(ServiceJobEvent).where(ServiceJobEvent.job_id == job.job_id).order_by(ServiceJobEvent.timestamp.asc())
+    events = list(db.execute(event_stmt).scalars().all())
+
+    # Latest quote
+    quote_stmt = select(ServiceJobQuote).where(
+        ServiceJobQuote.service_job_id == job.job_id,
+        ServiceJobQuote.status.in_(["PENDING_CUSTOMER", "ACCEPTED", "REJECTED"])
+    ).order_by(ServiceJobQuote.version.desc())
+    quote = db.execute(quote_stmt).scalars().first()
+
+    # Payments
+    pay_stmt = select(ServicePayment).where(ServicePayment.service_job_id == job.job_id)
+    payments = list(db.execute(pay_stmt).scalars().all())
+
+    # Latest inspection (for damage description)
+    from app.models.ServiceModel import ServiceJobInspection
+    insp_stmt = select(ServiceJobInspection).where(
+        ServiceJobInspection.service_job_id == job.job_id
+    ).order_by(ServiceJobInspection.created_at.desc())
+    inspection = db.execute(insp_stmt).scalars().first()
+
+    from app.models.EcomCustomerModel import EcomCustomer
+    cust = db.get(EcomCustomer, job.customer_id) if job.customer_id else None
+
+    # Build response payload
+    return {
+        "job_id": job.job_id,
+        "job_no": job.job_no,
+        "status": job.status,
+        "customer": {
+            "customer_id": job.customer_id,
+            "name": f"{cust.first_name} {cust.last_name}".strip() if cust else "Guest Customer",
+            "email": cust.email if cust else "N/A",
+            "phone": cust.phone if cust else "N/A"
+        },
+        "service_name": job.service_name_snapshot or (job.service.name if job.service else "Repair Service"),
+        "base_price": float(job.base_price_snapshot if job.base_price_snapshot is not None else (job.service.base_price if job.service else 0.0)),
+        "device_brand": job.device.brand if job.device else (job.brand_id or "Generic"),
+        "device_model": job.device.model if job.device else (job.model_id or "Device"),
+        "appointment": {
+            "appointment_id": appt.appointment_id,
+            "scheduled_start": appt.scheduled_start.isoformat(),
+            "scheduled_end": appt.scheduled_end.isoformat(),
+            "status": appt.status
+        } if appt else None,
+        "quote": {
+            "quote_id": quote.quote_id,
+            "version": quote.version,
+            "subtotal": float(quote.subtotal),
+            "tax": float(quote.tax),
+            "additional_damage_amount": float(quote.additional_damage_amount),
+            "total": float(quote.total),
+            "status": quote.status,
+            "reason": quote.reason,
+            "expires_at": quote.expires_at.isoformat() if quote.expires_at else None,
+            "additional_damage_description": inspection.additional_damage if inspection else None,
+        } if quote else None,
+        "events": [
+            {
+                "event_type": ev.event_type,
+                "timestamp": ev.timestamp.isoformat(),
+                "notes": ev.notes
+            } for ev in events
+        ],
+        "payments": [
+            {
+                "payment_type": p.payment_type,
+                "amount": float(p.amount),
+                "status": p.status,
+                "paid_at": p.paid_at.isoformat() if p.paid_at else None
+            } for p in payments
+        ]
+    }
+
+@router.get("/jobs")
+def list_service_jobs_admin(
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin", "Manager", "Technician"])),
+    db: Session = Depends(get_db)
+):
+    """List all repair & diagnostics jobs for dashboard queues."""
+    from app.models.ServiceModel import ServiceJob
+    from app.models.EcomCustomerModel import EcomCustomer
+    stmt = select(ServiceJob).order_by(ServiceJob.created_at.desc())
+    jobs = db.execute(stmt).scalars().all()
+
+    cust_ids = {j.customer_id for j in jobs if j.customer_id}
+    cust_map = {}
+    if cust_ids:
+        custs = db.execute(select(EcomCustomer).where(EcomCustomer.customer_id.in_(cust_ids))).scalars().all()
+        for c in custs:
+            cust_map[c.customer_id] = {
+                "name": f"{c.first_name} {c.last_name}".strip(),
+                "email": c.email,
+                "phone": c.phone or "N/A"
+            }
+
+    return [
+        {
+            "job_id": j.job_id,
+            "job_no": j.job_no,
+            "customer_id": j.customer_id,
+            "customer_name": cust_map.get(j.customer_id, {}).get("name") or (f"Customer ({j.customer_id[:8]})" if j.customer_id else "Guest Customer"),
+            "customer_email": cust_map.get(j.customer_id, {}).get("email") or "N/A",
+            "customer_phone": cust_map.get(j.customer_id, {}).get("phone") or "N/A",
+            "status": j.status,
+            "service_name": j.service_name_snapshot or (j.custom_service_name if j.custom_service_name else (j.service.name if j.service else "Custom Repair")),
+            "base_price": float(j.base_price_snapshot if j.base_price_snapshot is not None else (j.service.base_price if j.service else 0.0)),
+            "device_brand": j.device.brand if j.device else (j.brand_id or "Generic"),
+            "device_model": j.device.model if j.device else (j.model_id or "Device"),
+            "created_at": j.created_at.isoformat()
+        } for j in jobs
+    ]
+
+@router.post("/jobs/{job_id}/status")
+def update_service_job_status_admin(
+    job_id: str,
+    status: str = Query(..., description="New status value"),
+    current_user: User = Depends(RoleChecker(["Super Admin", "Admin", "Manager", "Technician"])),
+    db: Session = Depends(get_db)
+):
+    """Admin/Technician manual status override for a service job."""
+    from app.models.ServiceModel import ServiceJob
+    job = db.get(ServiceJob, job_id)
+    if not job:
+        raise HTTPException(status_code=404, detail="Job not found")
+        
+    job.status = status
+    db.commit()
+    db.refresh(job)
+    return {"status": "success", "new_status": job.status}

Backend/app/api/v1/routers/SettingsRouter.py

@@ -0,0 +1,107 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from typing import List
+import ulid
+
+from app.core.database.db_session import get_db
+from app.repositories.setting_repository import setting_repository
+from app.models.SettingModel import Setting
+from app.schemas.Settings import SettingCreate, SettingUpdate, SettingResponse
+from app.models.UserModel import User
+from app.core.permissions.RoleChecker import get_current_user, PermissionChecker
+
+router = APIRouter(prefix="/api/v1/settings", tags=["Configuration Settings"])
+
+@router.post("/create", response_model=SettingResponse, status_code=status.HTTP_201_CREATED)
+def create_setting(
+    data: SettingCreate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("settings.create"))
+):
+    existing = setting_repository.get_by_key(db, data.setting_key)
+    if existing:
+        raise HTTPException(status_code=400, detail="Setting key already exists.")
+
+    setting_id = str(ulid.ULID())
+    new_setting = Setting(
+        setting_id=setting_id,
+        setting_key=data.setting_key,
+        setting_value=data.setting_value,
+        description=data.description,
+        is_public=data.is_public
+    )
+    
+    setting_repository.create(db, new_setting)
+    return new_setting
+
+@router.get("/key/{key_name}", response_model=SettingResponse)
+def get_setting_by_key(
+    key_name: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    setting = setting_repository.get_by_key(db, key_name)
+    if not setting:
+        raise HTTPException(status_code=404, detail="Setting not found")
+        
+    # Restrict private settings to admin/system users
+    if not setting.is_public and current_user.role.role_name.lower() not in ["admin", "super admin"] and current_user.user_id != "internal-mcp":
+        raise HTTPException(status_code=403, detail="Access denied to private settings")
+        
+    return setting
+
+@router.get("/public", response_model=List[SettingResponse])
+def get_public_settings(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    return setting_repository.get_public_settings(db)
+
+@router.put("/update/{key_name}", response_model=SettingResponse)
+def update_setting(
+    key_name: str,
+    payload: SettingUpdate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("settings.update"))
+):
+    setting = setting_repository.get_by_key(db, key_name)
+    if not setting:
+        raise HTTPException(status_code=404, detail="Setting not found")
+
+    setting.setting_value = payload.setting_value
+    if payload.description is not None:
+        setting.description = payload.description
+    if payload.is_public is not None:
+        setting.is_public = payload.is_public
+
+    setting_repository.update(db, setting)
+    return setting
+
+@router.post("/save/{key_name}", response_model=SettingResponse)
+def save_setting(
+    key_name: str,
+    payload: SettingUpdate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user)
+):
+    setting = setting_repository.get_by_key(db, key_name)
+    if not setting:
+        setting_id = str(ulid.ULID())
+        setting = Setting(
+            setting_id=setting_id,
+            setting_key=key_name,
+            group="invoice_branding" if "branding" in key_name else "storefront",
+            setting_value=payload.setting_value,
+            description=payload.description or f"Setting for {key_name}",
+            is_public=payload.is_public if payload.is_public is not None else True
+        )
+        setting_repository.create(db, setting)
+    else:
+        setting.setting_value = payload.setting_value
+        if payload.description is not None:
+            setting.description = payload.description
+        if payload.is_public is not None:
+            setting.is_public = payload.is_public
+        setting_repository.update(db, setting)
+
+    return setting

Backend/app/api/v1/routers/StorefrontRouter.py

@@ -0,0 +1,143 @@
+"""
+@router StorefrontRouter (Backend/app/api/v1/routers/StorefrontRouter.py)
+@purpose Versioned Storefront API endpoints for customer reviews, trust badges, hot deals, blog posts, and footer settings.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from typing import List, Dict, Any
+from datetime import datetime, timedelta
+import ulid
+
+from app.core.database.db_session import get_db
+
+router = APIRouter(prefix="/api/v1/storefront", tags=["Storefront Dynamic Services"])
+
+@router.get("/reviews/{product_id}")
+def get_product_reviews(product_id: str):
+    """
+    Returns dynamic customer reviews for a given product.
+    """
+    return [
+        {
+            "review_id": "rev_01",
+            "product_id": product_id,
+            "author_name": "Alex Morgan",
+            "rating": 5,
+            "verified_buyer": True,
+            "review_date": "2026-07-20",
+            "title": "Exceptional Quality!",
+            "comment": "Exceptional build quality and super-fast delivery! The product fits perfectly and exceeded expectations."
+        },
+        {
+            "review_id": "rev_02",
+            "product_id": product_id,
+            "author_name": "David Chen",
+            "rating": 5,
+            "verified_buyer": True,
+            "review_date": "2026-07-18",
+            "title": "Top Tier OEM Hardware",
+            "comment": "100% genuine OEM quality. Arrived well packaged within 24 hours. Will buy again!"
+        },
+        {
+            "review_id": "rev_03",
+            "product_id": product_id,
+            "author_name": "Samantha Reed",
+            "rating": 4,
+            "verified_buyer": True,
+            "review_date": "2026-07-15",
+            "title": "Great Value for Money",
+            "comment": "Works flawlessly with my device. Installation was simple and straightforward."
+        }
+    ]
+
+@router.get("/trust-badges")
+def get_trust_badges():
+    """
+    Returns dynamic storefront trust badges.
+    """
+    return [
+        {"id": "tb1", "title": "Free Shipping", "subtitle": "On order over ₹1,000", "icon": "truck"},
+        {"id": "tb2", "title": "Flexible & Easy Return", "subtitle": "Return within 14 days", "icon": "refresh"},
+        {"id": "tb3", "title": "24/7 Support Services", "subtitle": "Any Time Customer Support", "icon": "headset"},
+        {"id": "tb4", "title": "Secure payment", "subtitle": "100% Fast & Secure Payment", "icon": "shield"}
+    ]
+
+@router.get("/blog-posts")
+def get_blog_posts():
+    """
+    Returns dynamic tech blog articles.
+    """
+    return [
+        {
+            "post_id": "bp1",
+            "title": "How to Write a Blog Post Your Readers Will Love in 5 Steps",
+            "excerpt": "Why the world would end without travel coupons. The 16 worst...",
+            "author": "Admin",
+            "date": "July 24, 2026",
+            "image_url": ""
+        },
+        {
+            "post_id": "bp2",
+            "title": "9 Content Marketing Trends and Ideas to Increase Traffic",
+            "excerpt": "Why do people think wholesale accessories are a good idea? Unbelievable...",
+            "author": "Technician",
+            "date": "July 22, 2026",
+            "image_url": ""
+        },
+        {
+            "post_id": "bp3",
+            "title": "The Ultimate Guide to Marketing Strategies to Improve Sales",
+            "excerpt": "Many things about electronic devices your kids don't want you to...",
+            "author": "Store Manager",
+            "date": "July 19, 2026",
+            "image_url": ""
+        },
+        {
+            "post_id": "bp4",
+            "title": "50 Best Sales Questions to Determine Your Customer's Needs",
+            "excerpt": "The unconventional guide to the software applications. Why do people think...",
+            "author": "Support Desk",
+            "date": "July 15, 2026",
+            "image_url": ""
+        }
+    ]
+
+@router.get("/footer-info")
+def get_footer_info():
+    """
+    Returns dynamic footer contact info, store links, and legal links.
+    """
+    return {
+        "phone": "(+00) 123-456-789",
+        "email": "demo@example.com",
+        "address": "99 New Theme St. XY, USA 12345, Beside the Sun point land.",
+        "copyright": "© 2026 TechShop_Electronics05 - WordPress Theme by Avanam",
+        "get_to_know_us": [
+            {"label": "About Us", "href": "/about"},
+            {"label": "Term & Policy", "href": "/terms"},
+            {"label": "Careers", "href": "/careers"},
+            {"label": "News & Blog", "href": "/blog"},
+            {"label": "Contact Us", "href": "/contact"}
+        ],
+        "information": [
+            {"label": "Help Center", "href": "/help"},
+            {"label": "Feedback", "href": "/feedback"},
+            {"label": "FAQs", "href": "/faqs"},
+            {"label": "Size Guide", "href": "/size-guide"},
+            {"label": "Payments", "href": "/payments"}
+        ],
+        "orders_returns": [
+            {"label": "Track Order", "href": "/account"},
+            {"label": "Delivery", "href": "/delivery"},
+            {"label": "Services", "href": "/services"},
+            {"label": "Returns", "href": "/returns"},
+            {"label": "Exchange", "href": "/exchange"}
+        ],
+        "our_store": [
+            {"label": "Affiliate", "href": "/affiliate"},
+            {"label": "Best Seller", "href": "/products?sort=best-sellers"},
+            {"label": "New Products", "href": "/products?sort=newest"},
+            {"label": "On Sale", "href": "/products?on_sale=true"},
+            {"label": "Featured", "href": "/products?featured=true"}
+        ]
+    }

Backend/app/api/v1/routers/UserCreationRouter.py

@@ -0,0 +1,166 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from typing import List
+from datetime import datetime, timezone
+import ulid
+
+from app.core.database.db_session import get_db
+from app.repositories.user_repository import user_repository
+from app.models.UserModel import User
+from app.models.RoleModel import Role
+from app.schemas.User import UserCreate, UserUpdate, UserResponse
+from app.core.permissions.RoleChecker import RoleChecker, PermissionChecker
+from app.core.validators.password_validator import validate_password_complexity
+from app.utils.Hash_util import hash_password
+from app.services.code_generator_service import code_generator_service
+
+router = APIRouter(prefix="/api/v1/users", tags=["User Creation"])
+
+@router.post("/create", response_model=UserResponse, status_code=status.HTTP_201_CREATED)
+def create_user(
+    data: UserCreate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("user.create"))
+):
+    # 1. Check duplicate identity parameters
+    duplicate = user_repository.check_duplicate_identity(db, data.email, data.phone)
+    if duplicate:
+        raise HTTPException(status_code=400, detail="User with this email or phone number already exists.")
+
+    # 2. Check Role existence and fetch prefix
+    role = db.get(Role, data.role_id)
+    if not role or role.deleted_at is not None:
+        raise HTTPException(status_code=400, detail="Specified role ID is invalid or inactive.")
+
+    # 3. Validate password complexity
+    validate_password_complexity(data.password)
+
+    # 4. Generate sequential employee code
+    prefix = role.role_prefix
+    employee_code = code_generator_service.generate_next_code(db, "User", prefix)
+
+    # 5. Build user record
+    user_id = str(ulid.ULID())
+    new_user = User(
+        user_id=user_id,
+        employee_code=employee_code,
+        first_name=data.first_name,
+        last_name=data.last_name,
+        display_name=data.display_name or f"{data.first_name} {data.last_name}",
+        email=data.email,
+        phone=data.phone,
+        password_hash=hash_password(data.password),
+        gender=data.gender,
+        dob=data.dob,
+        department_id=data.department_id,
+        designation_id=data.designation_id,
+        role_id=data.role_id,
+        manager_id=data.manager_id,
+        is_active=True
+    )
+
+    user_repository.create(db, new_user)
+    return new_user
+
+@router.get("/all", response_model=List[UserResponse])
+def get_all_users(
+    skip: int = 0,
+    limit: int = 100,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("user.view"))
+):
+    users = user_repository.get_active_users(db, skip, limit)
+    from app.models.AuditLogModel import AuditLog
+    for u in users:
+        latest = (
+            db.query(AuditLog)
+            .filter(AuditLog.user_id == u.user_id)
+            .order_by(AuditLog.created_at.desc())
+            .first()
+        )
+        if latest:
+            u.last_activity = f"{latest.action.replace('_', ' ').title()} {latest.entity_type}"
+        else:
+            u.last_activity = "No recent activity"
+    return users
+
+@router.get("/profile/{user_id}", response_model=UserResponse)
+def get_user_profile(
+    user_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("user.view"))
+):
+    user = user_repository.get_by_id(db, user_id)
+    if not user or user.deleted_at is not None:
+        raise HTTPException(status_code=404, detail="User not found")
+    return user
+
+@router.put("/update/{user_id}", response_model=UserResponse)
+def update_user_profile(
+    user_id: str,
+    payload: UserUpdate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("user.update"))
+):
+    user = user_repository.get_by_id(db, user_id)
+    if not user or user.deleted_at is not None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    # Check email/phone uniqueness if being updated
+    if payload.email and payload.email != user.email:
+        if user_repository.get_by_email(db, payload.email):
+            raise HTTPException(status_code=400, detail="Email is already registered.")
+        user.email = payload.email
+
+    if payload.phone and payload.phone != user.phone:
+        if user_repository.get_by_phone(db, payload.phone):
+            raise HTTPException(status_code=400, detail="Phone number is already registered.")
+        user.phone = payload.phone
+
+    # Update strings
+    if payload.first_name:
+        user.first_name = payload.first_name
+    if payload.last_name:
+        user.last_name = payload.last_name
+    if payload.display_name:
+        user.display_name = payload.display_name
+    if payload.gender:
+        user.gender = payload.gender
+    if payload.dob:
+        user.dob = payload.dob
+    if payload.profile_image_id:
+        user.profile_image_id = payload.profile_image_id
+
+    # Update relationships
+    if payload.department_id:
+        user.department_id = payload.department_id
+    if payload.designation_id:
+        user.designation_id = payload.designation_id
+    if payload.role_id:
+        user.role_id = payload.role_id
+    if payload.manager_id:
+        user.manager_id = payload.manager_id
+
+    # If resetting password
+    if payload.password:
+        validate_password_complexity(payload.password)
+        user.password_hash = hash_password(payload.password)
+
+    user_repository.update(db, user)
+    return user
+
+@router.delete("/delete/{user_id}")
+def delete_user_profile(
+    user_id: str,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(PermissionChecker("user.delete"))
+):
+    user = user_repository.get_by_id(db, user_id)
+    if not user or user.deleted_at is not None:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    # Safe soft delete
+    user.deleted_at = datetime.now(timezone.utc)
+    user.is_active = False
+    db.commit()
+    return {"detail": "User soft deleted successfully"}

Backend/app/api/v1/routers/WishlistRouter.py

@@ -0,0 +1,26 @@
+"""
+@router WishlistRouter (Backend/app/api/v1/routers/WishlistRouter.py)
+"""
+from fastapi import APIRouter
+from pydantic import BaseModel
+
+router = APIRouter(prefix="/api/v1/wishlist", tags=["Customer Wishlist"])
+
+class WishlistAddRequest(BaseModel):
+    product_id: str
+
+@router.get("")
+def get_wishlist():
+    return {
+        "items": [
+            {"product_id": "prd_01J8X9A", "name": "Display Assembly OLED", "price": 149.99}
+        ]
+    }
+
+@router.post("/add")
+def add_to_wishlist(payload: WishlistAddRequest):
+    return {"message": "Product added to wishlist", "product_id": payload.product_id}
+
+@router.post("/remove")
+def remove_from_wishlist(payload: WishlistAddRequest):
+    return {"message": "Product removed from wishlist", "product_id": payload.product_id}

Backend/app/api/v1/routers/admin_storefront.py

@@ -0,0 +1,240 @@
+"""
+@router Admin Storefront Router (Backend/app/api/v1/routers/admin_storefront.py)
+@purpose Admin CRM endpoints for creating, editing, reordering, bulk saving, and publishing StorefrontContent items.
+"""
+from fastapi import APIRouter, Depends, HTTPException, status, UploadFile, File
+from sqlalchemy.orm import Session
+from pydantic import BaseModel
+from typing import List, Dict, Any, Optional
+import ulid
+import os
+import shutil
+
+from app.core.database.db_session import get_db
+from app.models.StorefrontContentModel import StorefrontContent, ContentStatusEnum
+from app.services.StorefrontService import StorefrontService
+
+from app.core.permissions.RoleChecker import get_current_user
+from app.models.UserModel import User
+
+router = APIRouter(prefix="/api/v1/admin/storefront", tags=["Admin Storefront CMS Management"])
+
+
+@router.post("/upload-image")
+async def upload_storefront_image(
+    file: UploadFile = File(...),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Accepts an uploaded image, converts it to WebP format asynchronously,
+    generates optimized sizes (thumbnail, medium, large), and returns URLs.
+    """
+    ext = os.path.splitext(file.filename or "")[1].lower()
+    if ext not in [".jpg", ".jpeg", ".png", ".webp"]:
+        raise HTTPException(status_code=400, detail="Only image files (.jpg, .jpeg, .png, .webp) are allowed.")
+
+    file_bytes = await file.read()
+    max_bytes = 20 * 1024 * 1024 # 20MB
+    if len(file_bytes) > max_bytes:
+        raise HTTPException(status_code=400, detail="File size exceeds the 20MB limit.")
+    
+    from pathlib import Path
+    from starlette.concurrency import run_in_threadpool
+    BACKEND_ROOT = Path(__file__).resolve().parents[4]
+    storefront_uploads_dir = BACKEND_ROOT / "uploads" / "storefront"
+    storefront_uploads_dir.mkdir(parents=True, exist_ok=True)
+
+    base_id = str(ulid.ULID())
+    
+    def process_and_save():
+        from PIL import Image as PILImage
+        import io
+
+        original_img = PILImage.open(io.BytesIO(file_bytes))
+        
+        # Convert RGBA / P mode to RGB if necessary for JPEG/WEBP compatibility
+        if original_img.mode in ("RGBA", "P"):
+            original_img = original_img.convert("RGBA")
+        elif original_img.mode != "RGB":
+            original_img = original_img.convert("RGB")
+
+        # Cap max dimension to 2560px for high performance and pristine 4K quality
+        max_dim = 2560
+        if original_img.size[0] > max_dim or original_img.size[1] > max_dim:
+            original_img.thumbnail((max_dim, max_dim), PILImage.Resampling.BILINEAR)
+
+        # 1. Save main image as WebP
+        orig_io = io.BytesIO()
+        original_img.save(orig_io, format="WEBP", quality=88)
+        with open(storefront_uploads_dir / f"{base_id}.webp", "wb") as f:
+            f.write(orig_io.getvalue())
+
+        # Helper for resizing
+        def save_resized(target_width: int, suffix: str):
+            if original_img.size[0] > target_width:
+                w_percent = (target_width / float(original_img.size[0]))
+                h_size = int((float(original_img.size[1]) * float(w_percent)))
+                resized_img = original_img.resize((target_width, h_size), PILImage.Resampling.BILINEAR)
+            else:
+                resized_img = original_img
+            
+            res_io = io.BytesIO()
+            resized_img.save(res_io, format="WEBP", quality=80)
+            with open(storefront_uploads_dir / f"{base_id}_{suffix}.webp", "wb") as f:
+                f.write(res_io.getvalue())
+
+        # 2. Save size variants
+        save_resized(300, "thumbnail")
+        save_resized(800, "medium")
+        save_resized(1500, "large")
+
+    try:
+        await run_in_threadpool(process_and_save)
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Failed to process and compress image: {str(e)}")
+
+    return {
+        "image_url": f"/uploads/storefront/{base_id}.webp",
+        "thumbnail_url": f"/uploads/storefront/{base_id}_thumbnail.webp",
+        "medium_url": f"/uploads/storefront/{base_id}_medium.webp",
+        "large_url": f"/uploads/storefront/{base_id}_large.webp"
+    }
+
+
+
+class ContentCreatePayload(BaseModel):
+
+    content_id: Optional[str] = None
+    page: str = "home"
+    region: str = "hero"
+    type: str = "hero_banner"
+    title: str
+    subtitle: Optional[str] = None
+    image_url: Optional[str] = None
+    button_text: Optional[str] = None
+    button_url: Optional[str] = None
+    display_order: int = 0
+    metadata_json: Optional[Dict[str, Any]] = None
+
+class BulkSavePayload(BaseModel):
+    items: List[ContentCreatePayload]
+
+@router.get("/content/all")
+def get_all_cms_content(db: Session = Depends(get_db)):
+    contents = db.query(StorefrontContent).order_by(StorefrontContent.display_order.asc()).all()
+    return contents
+
+@router.post("/content/create", status_code=status.HTTP_201_CREATED)
+def create_cms_content(data: ContentCreatePayload, db: Session = Depends(get_db)):
+    content_id = data.content_id or str(ulid.ULID())
+    slug = f"{data.page}-{data.region}-{data.type}-{content_id[:8]}".lower()
+
+    existing = db.query(StorefrontContent).filter(StorefrontContent.content_id == content_id).first()
+    if existing:
+        existing.page = data.page
+        existing.region = data.region
+        existing.type = data.type
+        existing.title = data.title
+        existing.subtitle = data.subtitle
+        existing.image_url = data.image_url
+        existing.button_text = data.button_text
+        existing.button_url = data.button_url
+        existing.display_order = data.display_order
+        existing.metadata_json = data.metadata_json or {}
+        db.commit()
+        db.refresh(existing)
+        content = existing
+    else:
+        content = StorefrontContent(
+            content_id=content_id,
+            page=data.page,
+            region=data.region,
+            type=data.type,
+            slug=slug,
+            title=data.title,
+            subtitle=data.subtitle,
+            image_url=data.image_url,
+            button_text=data.button_text,
+            button_url=data.button_url,
+            status=ContentStatusEnum.PUBLISHED,
+            display_order=data.display_order,
+            metadata_json=data.metadata_json or {}
+        )
+        db.add(content)
+        db.commit()
+        db.refresh(content)
+
+    # Invalidate storefront cache for instant live update
+    service = StorefrontService(db)
+    service.invalidate_cache()
+
+    return content
+
+@router.post("/content/bulk-save")
+def bulk_save_cms_content(payload: BulkSavePayload, db: Session = Depends(get_db)):
+    saved_ids = []
+    for data in payload.items:
+        content_id = data.content_id or str(ulid.ULID())
+        saved_ids.append(content_id)
+        slug = f"{data.page}-{data.region}-{data.type}-{content_id[:8]}".lower()
+
+        existing = db.query(StorefrontContent).filter(StorefrontContent.content_id == content_id).first()
+        if existing:
+            existing.page = data.page
+            existing.region = data.region
+            existing.type = data.type
+            existing.title = data.title
+            existing.subtitle = data.subtitle
+            existing.image_url = data.image_url
+            existing.button_text = data.button_text
+            existing.button_url = data.button_url
+            existing.display_order = data.display_order
+            existing.status = ContentStatusEnum.PUBLISHED
+            existing.metadata_json = data.metadata_json or {}
+        else:
+            content = StorefrontContent(
+                content_id=content_id,
+                page=data.page,
+                region=data.region,
+                type=data.type,
+                slug=slug,
+                title=data.title,
+                subtitle=data.subtitle,
+                image_url=data.image_url,
+                button_text=data.button_text,
+                button_url=data.button_url,
+                status=ContentStatusEnum.PUBLISHED,
+                display_order=data.display_order,
+                metadata_json=data.metadata_json or {}
+            )
+            db.add(content)
+
+    # Clean up duplicate/obsolete records for the saved regions
+    saved_regions = list(set([data.region for data in payload.items]))
+    if saved_regions:
+        db.query(StorefrontContent).filter(
+            StorefrontContent.region.in_(saved_regions),
+            ~StorefrontContent.content_id.in_(saved_ids)
+        ).delete(synchronize_session=False)
+
+    db.commit()
+
+    # Invalidate cache
+    service = StorefrontService(db)
+    service.invalidate_cache()
+
+    return {"message": "Bulk CMS content saved and storefront cache invalidated", "count": len(payload.items)}
+
+@router.delete("/content/{content_id}")
+def delete_cms_content(content_id: str, db: Session = Depends(get_db)):
+    item = db.query(StorefrontContent).filter(StorefrontContent.content_id == content_id).first()
+    if not item:
+        raise HTTPException(status_code=404, detail="Content not found")
+
+    db.delete(item)
+    db.commit()
+
+    service = StorefrontService(db)
+    service.invalidate_cache()
+
+    return {"message": "CMS content deleted", "content_id": content_id}

Backend/app/api/v1/routers/storefront.py

@@ -0,0 +1,226 @@
+"""
+@router Public Storefront Router (Backend/app/api/v1/routers/storefront.py)
+@purpose Read-only public endpoints for layout widgets, reviews, and settings powered by StorefrontService.
+"""
+from fastapi import APIRouter, Depends, Query, HTTPException, status
+from sqlalchemy.orm import Session, selectinload
+from sqlalchemy import select
+from typing import List, Dict, Any, Optional
+
+from app.core.database.db_session import get_db
+from app.services.StorefrontService import StorefrontService
+from app.services.CatalogSearchService import apply_product_search
+from app.models.ProductModel import Product, ProductVariant
+from app.models.CategoryModel import Category
+from app.models.BrandModel import Brand
+from app.models.DeviceCatalogModel import ServiceType
+from app.schemas.Catalog import ProductResponse
+
+router = APIRouter(prefix="/api/v1/storefront", tags=["Public Storefront Dynamic Services"])
+
+
+@router.get("/live-search")
+def live_search(
+    q: str = Query(..., min_length=2, max_length=200),
+    category: Optional[str] = Query(None),
+    db: Session = Depends(get_db),
+):
+    """
+    Autocomplete search for the storefront header. Caps results so 500k catalogs stay cheap.
+    """
+    from app.core.database.cache_manager import cache
+
+    cache_key = f"storefront:live-search:{q.strip().lower()}:{category or 'all'}"
+    cached = cache.get(cache_key)
+    if cached is not None:
+        return cached
+
+    stmt = (
+        select(Product)
+        .options(
+            selectinload(Product.images),
+            selectinload(Product.variants).selectinload(ProductVariant.images),
+        )
+        .where(Product.status == "active")
+    )
+    if category and category != "all":
+        stmt = stmt.join(Category, Product.category_id == Category.category_id).where(
+            (Category.slug == category) | (Category.category_id == category)
+        )
+    stmt = apply_product_search(stmt, q).order_by(Product.created_at.desc()).limit(8)
+    products = db.execute(stmt).scalars().all()
+
+    term = f"%{q.strip()}%"
+    categories = db.execute(
+        select(Category).where(Category.is_active == True, Category.name.ilike(term)).limit(5)
+    ).scalars().all()
+    brands = db.execute(
+        select(Brand).where(Brand.is_active == True, Brand.name.ilike(term)).limit(5)
+    ).scalars().all()
+    services = db.execute(
+        select(ServiceType).where(ServiceType.is_active == True, ServiceType.name.ilike(term)).limit(5)
+    ).scalars().all()
+
+    payload = {
+        "products": [ProductResponse.model_validate(p).model_dump(mode="json") for p in products],
+        "categories": [
+            {
+                "category_id": c.category_id,
+                "name": c.name,
+                "slug": c.slug,
+                "parent_category_id": c.parent_category_id,
+                "description": c.description,
+                "image_url": c.image_url,
+                "is_active": c.is_active,
+            }
+            for c in categories
+        ],
+        "brands": [
+            {
+                "brand_id": b.brand_id,
+                "name": b.name,
+                "slug": b.slug,
+                "logo_url": b.logo_url,
+                "is_active": b.is_active,
+            }
+            for b in brands
+        ],
+        "services": [
+            {
+                "service_type_id": s.service_type_id if hasattr(s, "service_type_id") else getattr(s, "type_id", None),
+                "name": s.name,
+                "slug": getattr(s, "slug", None),
+            }
+            for s in services
+        ],
+    }
+    cache.set(cache_key, payload, ttl_seconds=15)
+    return payload
+
+
+@router.get("/layout/{page}")
+def get_storefront_layout(page: str, region: Optional[str] = Query(None), db: Session = Depends(get_db)):
+    """
+    Returns active storefront layout widgets ordered by display_order.
+    """
+    service = StorefrontService(db)
+    return service.get_layout(page, region)
+
+@router.get("/reviews/{product_id}")
+def get_product_reviews(product_id: str, db: Session = Depends(get_db)):
+    """
+    Returns approved customer reviews for a given product.
+    """
+    service = StorefrontService(db)
+    return service.get_reviews(product_id)
+
+@router.get("/settings/public")
+def get_public_settings(group: Optional[str] = Query(None), db: Session = Depends(get_db)):
+    """
+    Returns public key-value store settings.
+    """
+    service = StorefrontService(db)
+    return service.get_public_settings(group)
+
+@router.get("/catalog/categories/{category_id}/parent-hierarchy")
+def get_category_parent_hierarchy(category_id: str, db: Session = Depends(get_db)):
+    """
+    Returns the product-derived Brand → Series → Model hierarchy for a category.
+    Only includes brands/series/models that have active products in this category.
+    """
+    from sqlalchemy import select, distinct
+    from app.models.CategoryModel import Category
+    from app.models.ProductModel import Product
+    from app.models.BrandModel import Brand
+    from app.models.DeviceCatalogModel import DeviceSeries, DeviceModel
+    from app.schemas.Catalog import (
+        CategoryParentHierarchyResponse, HierarchyBrandItem,
+        HierarchySeriesItem, HierarchyModelItem,
+    )
+
+    # Verify category exists
+    category = db.execute(
+        select(Category).where(Category.category_id == category_id)
+    ).scalar_one_or_none()
+    if not category:
+        raise HTTPException(status_code=404, detail="Category not found")
+
+    # Fetch all active products in this category that have brand + series + model set
+    rows = db.execute(
+        select(
+            Brand.brand_id, Brand.name, Brand.slug, Brand.logo_url,
+            DeviceSeries.series_id, DeviceSeries.name.label("series_name"), DeviceSeries.slug.label("series_slug"),
+            DeviceModel.model_id, DeviceModel.name.label("model_name"), DeviceModel.slug.label("model_slug"), DeviceModel.image_url.label("model_image")
+        )
+        .select_from(Product)
+        .join(Brand, Product.brand_id == Brand.brand_id)
+        .outerjoin(DeviceModel, Product.device_model_id == DeviceModel.model_id)
+        .outerjoin(DeviceSeries, DeviceModel.series_id == DeviceSeries.series_id)
+        .where(
+            Product.category_id == category_id,
+            Product.status == "active",
+            Brand.is_active == True,
+            (DeviceSeries.series_id == None) | (DeviceSeries.is_active == True),
+            (DeviceModel.model_id == None) | (DeviceModel.is_active == True),
+        )
+        .distinct()
+    ).all()
+
+    # Build nested hierarchy in memory
+    brands_map: dict = {}
+    for row in rows:
+        bid = row.brand_id
+        if bid not in brands_map:
+            brands_map[bid] = {
+                "brand_id": bid,
+                "name": row.name,
+                "slug": row.slug,
+                "logo_url": row.logo_url,
+                "series": {},
+            }
+
+        sid = row.series_id
+        series_name = row.series_name
+        series_slug = row.series_slug
+
+        # If a model exists but series is missing, group it under a virtual "General Models" series
+        if not sid and row.model_id:
+            sid = f"no-series-{bid}"
+            series_name = "General Models"
+            series_slug = "general"
+
+        if sid:
+            if sid not in brands_map[bid]["series"]:
+                brands_map[bid]["series"][sid] = {
+                    "series_id": sid,
+                    "name": series_name,
+                    "slug": series_slug,
+                    "models": {},
+                }
+
+            mid = row.model_id
+            if mid:
+                if mid not in brands_map[bid]["series"][sid]["models"]:
+                    brands_map[bid]["series"][sid]["models"][mid] = {
+                        "model_id": mid,
+                        "name": row.model_name,
+                        "slug": row.model_slug,
+                        "image_url": row.model_image,
+                    }
+
+    # Convert maps to sorted lists
+    brands_list = []
+    for b in brands_map.values():
+        series_list = []
+        for s in b["series"].values():
+            models_list = list(s["models"].values())
+            series_list.append(HierarchySeriesItem(
+                series_id=s["series_id"], name=s["name"], slug=s["slug"],
+                models=[HierarchyModelItem(**m) for m in models_list]
+            ))
+        brands_list.append(HierarchyBrandItem(
+            brand_id=b["brand_id"], name=b["name"], slug=b["slug"], logo_url=b["logo_url"],
+            series=series_list
+        ))
+
+    return CategoryParentHierarchyResponse(category_id=category_id, brands=brands_list)

Backend/app/core/Exception.py

@@ -0,0 +1,5 @@
+class AppException(Exception):
+    def __init__(self, detail: str, status_code: int = 400):
+        self.detail = detail
+        self.status_code = status_code
+        super().__init__(self.detail)

Backend/app/core/Token.py

@@ -0,0 +1,35 @@
+from datetime import datetime, timedelta, timezone
+from jose import jwt, JWTError, ExpiredSignatureError
+from app.core.config.Config import settings, load_private_key_bytes, load_public_key_bytes
+from fastapi import HTTPException, status
+
+def create_access_token(user_id: str, email: str, role: str = "") -> str:
+    now = datetime.now(timezone.utc)
+    expire = now + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MIN)
+    payload = {
+        "sub": user_id,
+        "email": email,
+        "role": role,
+        "iat": now,
+        "exp": expire
+    }
+    private_key = load_private_key_bytes()
+    return jwt.encode(payload, private_key, algorithm=settings.ALGORITHM)
+
+def verify_access_token(token: str) -> dict:
+    try:
+        public_key = load_public_key_bytes()
+        payload = jwt.decode(token, public_key, algorithms=[settings.ALGORITHM])
+        return payload
+    except ExpiredSignatureError:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Token has expired",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+    except JWTError:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid signature or payload",
+            headers={"WWW-Authenticate": "Bearer"}
+        )

Backend/app/core/config/Config.py

@@ -0,0 +1,55 @@
+import os
+from pathlib import Path
+from typing import Any
+from pydantic_settings import BaseSettings
+
+class Settings(BaseSettings):
+    RUNTIME_ENV: str = "development"
+    ENVIRONMENT: str = "development"
+    DATABASE_URL: str = "mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin"
+    CORE_DATABASE_URL: str = "mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerceadmin"
+    CRM_DATABASE_URL: str = "mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartcrm"
+    COMMERCE_DATABASE_URL: str = "mysql+pymysql://Adithiyan:Adithiyan$2025Mysql@127.0.0.1:3306/ifixkartecommerce"
+    JWT_PRIVATE_KEY_PATH: str = "jwt_private.pem"
+    JWT_PUBLIC_KEY_PATH: str = "jwt_public.pem"
+    ALGORITHM: str = "RS512"
+    ACCESS_TOKEN_EXPIRE_MIN: int = 1440
+    REFRESH_TOKEN_EXPIRE_DAYS: int = 120
+    PROJECT_NAME: str = "iFixKart"
+    MAX_FAILED_LOGIN: int = 5
+    LOCKOUT_MINUTES: int = 15
+    SECRET_KEY: str
+    PUBLIC_API_KEY: str
+    GOOGLE_CLIENT_ID: str = ""
+    GOOGLE_CLIENT_SECRET: str = ""
+    GOOGLE_REDIRECT_URI: str = ""
+    RAZORPAY_KEY_ID: str = "rzp_test_TTUzPFYF0hRV89"
+    RAZORPAY_KEY_SECRET: str = "74tmlSkS4qK7zQaH1zclQfeH"
+    RAZORPAY_WEBHOOK_SECRET: str = "6TjjXgErPG3@ZpM"
+    RAZORPAY_ENABLED: bool = True
+
+    class Config:
+        env_file = ".env"
+        extra = "ignore"
+
+settings = Settings()
+
+def load_private_key_bytes(path=None):
+    p = Path(path or settings.JWT_PRIVATE_KEY_PATH)
+    if not p.is_absolute():
+        # resolve relative to project root (parent of app directory)
+        project_root = Path(__file__).resolve().parents[3]
+        p = project_root / p
+    if not p.exists():
+        raise FileNotFoundError(f"Private key not found at {p}")
+    return p.read_bytes()
+
+def load_public_key_bytes(path=None):
+    p = Path(path or settings.JWT_PUBLIC_KEY_PATH)
+    if not p.is_absolute():
+        # resolve relative to project root (parent of app directory)
+        project_root = Path(__file__).resolve().parents[3]
+        p = project_root / p
+    if not p.exists():
+        raise FileNotFoundError(f"Public key not found at {p}")
+    return p.read_bytes()

Backend/app/core/database/cache_manager.py

@@ -0,0 +1,121 @@
+import time
+import logging
+import threading
+from typing import Any, Dict, Optional
+
+logger = logging.getLogger("ifixkart.cache")
+
+class MemoryCache:
+    """Thread-safe in-process memory cache with TTL (Time To Live)."""
+    def __init__(self):
+        self._cache: Dict[str, Dict[str, Any]] = {}
+        self._lock = threading.Lock()
+
+    def get(self, key: str) -> Optional[Any]:
+        with self._lock:
+            item = self._cache.get(key)
+            if not item:
+                return None
+            if item["expire_at"] is not None and time.time() > item["expire_at"]:
+                del self._cache[key]
+                return None
+            return item["value"]
+
+    def set(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
+        expire_at = (time.time() + ttl_seconds) if ttl_seconds is not None else None
+        with self._lock:
+            self._cache[key] = {
+                "value": value,
+                "expire_at": expire_at
+            }
+
+    def delete(self, key: str) -> None:
+        with self._lock:
+            if key in self._cache:
+                del self._cache[key]
+
+    def invalidate_prefix(self, prefix: str) -> None:
+        with self._lock:
+            keys_to_del = [k for k in self._cache.keys() if k.startswith(prefix)]
+            for k in keys_to_del:
+                del self._cache[k]
+
+    def clear(self) -> None:
+        with self._lock:
+            self._cache.clear()
+
+class CacheManager:
+    """Consolidated cache interface with Redis connection fallback."""
+    def __init__(self):
+        self.memory_cache = MemoryCache()
+        self.redis_client = None
+        self._try_init_redis()
+
+    def _try_init_redis(self):
+        try:
+            import redis
+            import os
+            redis_host = os.getenv("REDIS_HOST", "127.0.0.1")
+            redis_port = int(os.getenv("REDIS_PORT", 6379))
+            self.redis_client = redis.Redis(
+                host=redis_host, 
+                port=redis_port, 
+                db=0, 
+                socket_connect_timeout=1,
+                decode_responses=False
+            )
+            self.redis_client.ping()
+            logger.info("CacheManager: Redis cache connected successfully.")
+        except Exception:
+            self.redis_client = None
+            logger.warning("CacheManager: Redis is offline or not installed. Falling back to In-Memory cache.")
+
+    def get(self, key: str) -> Optional[Any]:
+        if self.redis_client:
+            try:
+                import json
+                data = self.redis_client.get(key)
+                if data:
+                    return json.loads(data.decode("utf-8"))
+            except Exception as e:
+                logger.error(f"Redis get failed: {e}")
+        return self.memory_cache.get(key)
+
+    def set(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
+        if self.redis_client:
+            try:
+                import json
+                serialized = json.dumps(value)
+                self.redis_client.set(key, serialized, ex=ttl_seconds)
+                return
+            except Exception as e:
+                logger.error(f"Redis set failed: {e}")
+        self.memory_cache.set(key, value, ttl_seconds)
+
+    def delete(self, key: str) -> None:
+        if self.redis_client:
+            try:
+                self.redis_client.delete(key)
+            except Exception as e:
+                logger.error(f"Redis delete failed: {e}")
+        self.memory_cache.delete(key)
+
+    def invalidate_prefix(self, prefix: str) -> None:
+        if self.redis_client:
+            try:
+                keys = self.redis_client.keys(f"{prefix}*")
+                if keys:
+                    self.redis_client.delete(*keys)
+            except Exception as e:
+                logger.error(f"Redis prefix invalidation failed: {e}")
+        self.memory_cache.invalidate_prefix(prefix)
+
+    def clear(self) -> None:
+        if self.redis_client:
+            try:
+                self.redis_client.flushdb()
+            except Exception as e:
+                logger.error(f"Redis flushdb failed: {e}")
+        self.memory_cache.clear()
+
+cache = CacheManager()

Backend/app/core/database/db_session.py

@@ -0,0 +1,295 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, declarative_base, Session
+from app.core.config.Config import settings
+
+Base = declarative_base()
+
+# 1. Fallback connection URLs
+core_url = settings.CORE_DATABASE_URL or settings.DATABASE_URL
+crm_url = settings.CRM_DATABASE_URL or settings.DATABASE_URL
+commerce_url = settings.COMMERCE_DATABASE_URL or settings.DATABASE_URL
+
+# 2. Engines configuration with connection pooling
+engine_core = create_engine(
+    core_url,
+    future=True,
+    pool_pre_ping=True,
+    connect_args={"init_command": "SET time_zone='+00:00'"}
+)
+
+engine_crm = create_engine(
+    crm_url,
+    future=True,
+    pool_pre_ping=True,
+    connect_args={"init_command": "SET time_zone='+00:00'"}
+)
+
+engine_commerce = create_engine(
+    commerce_url,
+    future=True,
+    pool_pre_ping=True,
+    connect_args={"init_command": "SET time_zone='+00:00'"}
+)
+
+# Maintain default engine alias for backwards compatibility
+engine = engine_core
+
+# 3. Dynamic Routing Session
+class RoutingSession(Session):
+    def get_bind(self, mapper=None, clause=None):
+        table_name = None
+        if mapper:
+            table_name = getattr(mapper.persist_selectable, "name", None)
+        elif clause is not None:
+            if hasattr(clause, "table"):
+                table_name = getattr(clause.table, "name", None)
+            elif hasattr(clause, "froms") and clause.froms:
+                table_name = getattr(clause.froms[0], "name", None)
+
+        if table_name:
+            # CRM Workshop database routing
+            if table_name in [
+                "service_types", "repair_services",
+                "repair_variants", "repair_variant_images", "parts", "part_device_compatibility",
+                "repair_variant_parts", "stock_movements", "purchase_orders", "purchase_order_items",
+                "contacts", "contact_addresses"
+            ]:
+                return engine_crm
+
+            # Core Identity & Platform database routing
+            if table_name in [
+                "departments", "designations", "roles", "permissions", 
+                "users", "user_sessions", "audit_logs", 
+                "countries", "states", "cities", "settings", "file_uploads",
+                "role_permissions"
+            ]:
+                return engine_core
+
+            # Storefront Commerce database routing
+            if table_name in [
+                "device_series", "device_models",
+                "products", "product_variants", "product_images", "variant_attributes",
+                "variant_images", "attribute_types", "categories", "brands", "tags",
+                "collections", "storefront_contents", "product_reviews", "product_review_images",
+                "seo_metadata", "migration_jobs", "migration_batches", "migration_errors",
+                "migration_snapshots", "migration_job_checkpoints", "migration_media_items",
+                "media_groups", "media_library", "mapping_configs"
+            ]:
+                return engine_commerce
+                
+        # Default engine fallback
+        return engine_commerce
+
+SessionLocal = sessionmaker(
+    class_=RoutingSession,
+    autocommit=False,
+    autoflush=False
+)
+
+from fastapi import Request
+
+def get_db(request: Request):
+    db = SessionLocal()
+    
+    # Resolve Request ID
+    req_id = getattr(request.state, "request_id", None)
+    if not req_id:
+        import ulid
+        req_id = str(ulid.ULID())
+        request.state.request_id = req_id
+        
+    db.info["request_id"] = req_id
+    db.info["user_id"] = None
+    
+    # Resolve IP Address
+    x_forwarded_for = request.headers.get("x-forwarded-for")
+    db.info["ip_address"] = x_forwarded_for.split(",")[0].strip() if x_forwarded_for else (request.client.host if request.client else "127.0.0.1")
+    
+    # Resolve User Agent
+    db.info["user_agent"] = request.headers.get("user-agent", "")
+    
+    # Save session reference in request state so auth logic can inject user_id back to it
+    request.state.db_session = db
+    
+    try:
+        yield db
+    finally:
+        db.close()
+
+# --- Automated Audit Log Event Listener ---
+from sqlalchemy import event
+
+@event.listens_for(SessionLocal, "before_flush")
+def receive_before_flush(session, flush_context, instances):
+    req_id = session.info.get("request_id")
+    if not req_id:
+        return
+
+    from app.models.AuditLogModel import AuditLog
+    import json
+    import ulid
+
+    def serialize_val(val):
+        if val is None:
+            return None
+        if hasattr(val, "isoformat"):
+            return val.isoformat()
+        if hasattr(val, "to_eng_string"):
+            return str(val)
+        if isinstance(val, (dict, list)):
+            return val
+        try:
+            json.dumps(val)
+            return val
+        except Exception:
+            return str(val)
+
+    def get_model_dict(obj):
+        mapper = obj.__class__.__mapper__
+        data = {}
+        for col in mapper.column_attrs:
+            val = getattr(obj, col.key)
+            data[col.key] = serialize_val(val)
+        return data
+
+    logs_to_add = []
+
+    # 1. New objects (Insert)
+    for obj in session.new:
+        if isinstance(obj, AuditLog):
+            continue
+        entity_type = obj.__class__.__name__
+        mapper = obj.__class__.__mapper__
+        pk_keys = [col.key for col in mapper.primary_key]
+        entity_id = "-".join([str(getattr(obj, k)) for k in pk_keys]) if pk_keys else "transient"
+        if not entity_id or entity_id == "None" or entity_id == "transient":
+            # Primary Key might not be flushed yet. Resolve via common ID attributes:
+            if hasattr(obj, "user_id") and obj.user_id:
+                entity_id = str(obj.user_id)
+            elif hasattr(obj, "product_id") and obj.product_id:
+                entity_id = str(obj.product_id)
+            elif hasattr(obj, "category_id") and obj.category_id:
+                entity_id = str(obj.category_id)
+            elif hasattr(obj, "brand_id") and obj.brand_id:
+                entity_id = str(obj.brand_id)
+            elif hasattr(obj, "order_id") and obj.order_id:
+                entity_id = str(obj.order_id)
+            else:
+                entity_id = "transient"
+                
+        action = "create"
+        if entity_type == "UserSession":
+            action = "login"
+
+        new_val = get_model_dict(obj)
+
+        log_entry = AuditLog(
+            audit_id=str(ulid.ULID()),
+            request_id=req_id,
+            user_id=session.info.get("user_id"),
+            entity_type=entity_type,
+            entity_id=entity_id,
+            action=action,
+            old_value=None,
+            new_value=new_val,
+            ip_address=session.info.get("ip_address") or "127.0.0.1",
+            user_agent=session.info.get("user_agent")
+        )
+        logs_to_add.append(log_entry)
+
+    # 2. Dirty objects (Update)
+    for obj in session.dirty:
+        if isinstance(obj, AuditLog):
+            continue
+        if not session.is_modified(obj):
+            continue
+
+        entity_type = obj.__class__.__name__
+        mapper = obj.__class__.__mapper__
+        pk_keys = [col.key for col in mapper.primary_key]
+        entity_id = "-".join([str(getattr(obj, k)) for k in pk_keys]) if pk_keys else "transient"
+        if not entity_id or entity_id == "None" or entity_id == "transient":
+            if hasattr(obj, "user_id") and obj.user_id:
+                entity_id = str(obj.user_id)
+            elif hasattr(obj, "product_id") and obj.product_id:
+                entity_id = str(obj.product_id)
+            elif hasattr(obj, "category_id") and obj.category_id:
+                entity_id = str(obj.category_id)
+            elif hasattr(obj, "brand_id") and obj.brand_id:
+                entity_id = str(obj.brand_id)
+            elif hasattr(obj, "order_id") and obj.order_id:
+                entity_id = str(obj.order_id)
+
+        old_val_dict = {}
+        new_val_dict = {}
+
+        from sqlalchemy.orm import attributes
+        for col in mapper.column_attrs:
+            hist = attributes.get_history(obj, col.key)
+            if hist.has_changes():
+                old_v = hist.deleted[0] if hist.deleted else None
+                new_v = hist.added[0] if hist.added else None
+                old_val_dict[col.key] = serialize_val(old_v)
+                new_val_dict[col.key] = serialize_val(new_v)
+
+        if not old_val_dict and not new_val_dict:
+            continue
+
+        action = "update"
+        if entity_type == "Order" and "status" in new_val_dict:
+            action = f"order_status_{new_val_dict['status'].lower()}"
+        elif entity_type == "UserSession" and "is_active" in new_val_dict and not new_val_dict["is_active"]:
+            action = "logout"
+
+        log_entry = AuditLog(
+            audit_id=str(ulid.ULID()),
+            request_id=req_id,
+            user_id=session.info.get("user_id"),
+            entity_type=entity_type,
+            entity_id=entity_id,
+            action=action,
+            old_value=old_val_dict,
+            new_value=new_val_dict,
+            ip_address=session.info.get("ip_address") or "127.0.0.1",
+            user_agent=session.info.get("user_agent")
+        )
+        logs_to_add.append(log_entry)
+
+    # 3. Deleted objects (Delete)
+    for obj in session.deleted:
+        if isinstance(obj, AuditLog):
+            continue
+        entity_type = obj.__class__.__name__
+        mapper = obj.__class__.__mapper__
+        pk_keys = [col.key for col in mapper.primary_key]
+        entity_id = "-".join([str(getattr(obj, k)) for k in pk_keys]) if pk_keys else "transient"
+        if not entity_id or entity_id == "None" or entity_id == "transient":
+            if hasattr(obj, "user_id") and obj.user_id:
+                entity_id = str(obj.user_id)
+            elif hasattr(obj, "product_id") and obj.product_id:
+                entity_id = str(obj.product_id)
+            elif hasattr(obj, "category_id") and obj.category_id:
+                entity_id = str(obj.category_id)
+            elif hasattr(obj, "brand_id") and obj.brand_id:
+                entity_id = str(obj.brand_id)
+            elif hasattr(obj, "order_id") and obj.order_id:
+                entity_id = str(obj.order_id)
+
+        old_val = get_model_dict(obj)
+
+        log_entry = AuditLog(
+            audit_id=str(ulid.ULID()),
+            request_id=req_id,
+            user_id=session.info.get("user_id"),
+            entity_type=entity_type,
+            entity_id=entity_id,
+            action="delete",
+            old_value=old_val,
+            new_value=None,
+            ip_address=session.info.get("ip_address") or "127.0.0.1",
+            user_agent=session.info.get("user_agent")
+        )
+        logs_to_add.append(log_entry)
+
+    for log in logs_to_add:
+        session.add(log)

Backend/app/core/database/init_db.py

@@ -0,0 +1,391 @@
+import pymysql
+from sqlalchemy import create_engine, select, text
+from sqlalchemy.orm import Session
+from urllib.parse import urlparse
+import ulid
+
+from app.core.config.Config import settings
+from app.core.database.db_session import (
+    Base, engine_core, engine_crm, engine_commerce, SessionLocal
+)
+import app.models.db_base
+from app.models.RoleModel import Role
+from app.models.DepartmentModel import Department
+from app.models.DesignationModel import Designation
+from app.models.UserModel import User
+from app.models.SettingModel import Setting
+from app.utils.Hash_util import hash_password
+
+def verify_or_create_database(db_url: str):
+    try:
+        parsed = urlparse(db_url)
+        db_name = parsed.path.lstrip("/")
+        host = parsed.hostname or "127.0.0.1"
+        port = parsed.port or 3306
+        user = parsed.username or "root"
+        password = parsed.password or ""
+
+        print(f"Verifying/creating database '{db_name}' on MySQL host {host}:{port}...")
+        connection = pymysql.connect(
+            host=host,
+            port=port,
+            user=user,
+            password=password
+        )
+        try:
+            with connection.cursor() as cursor:
+                cursor.execute(f"CREATE DATABASE IF NOT EXISTS `{db_name}` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;")
+            connection.commit()
+        finally:
+            connection.close()
+    except Exception as err:
+        print(f"Database verification notice (continuing safely): {err}")
+
+def initialize_database():
+    # 1. Verify/create all three database schemas
+    verify_or_create_database(settings.CORE_DATABASE_URL or settings.DATABASE_URL)
+    verify_or_create_database(settings.CRM_DATABASE_URL or settings.DATABASE_URL)
+    verify_or_create_database(settings.COMMERCE_DATABASE_URL or settings.DATABASE_URL)
+
+    # Safely recreate settings table if schema was updated
+    with engine_core.connect() as conn:
+        try:
+            conn.execute(text("SELECT created_at FROM settings LIMIT 1"))
+        except Exception:
+            try:
+                conn.execute(text("DROP TABLE IF EXISTS settings"))
+                conn.commit()
+            except Exception:
+                pass
+
+    # 2. Extract tables belonging to each DB in dependency-sorted order
+    crm_tables = [
+        "service_types", "repair_services", "repair_variants", "repair_variant_images",
+        "parts", "part_device_compatibility", "repair_variant_parts", "stock_movements",
+        "purchase_orders", "purchase_order_items", "contacts", "contact_addresses"
+    ]
+    core_tables = [
+        "departments", "designations", "roles", "permissions", 
+        "users", "user_sessions", "audit_logs", 
+        "countries", "states", "cities", "settings", "file_uploads",
+        "role_permissions"
+    ]
+    
+    core_metadata_tables = [t for t in Base.metadata.sorted_tables if t.name in core_tables]
+    crm_metadata_tables = [t for t in Base.metadata.sorted_tables if t.name in crm_tables]
+    commerce_metadata_tables = [
+        t for t in Base.metadata.sorted_tables 
+        if t.name not in core_tables and t.name not in crm_tables
+    ]
+    
+    print("Creating tables in Core Database...")
+    Base.metadata.create_all(bind=engine_core, tables=core_metadata_tables)
+        
+    print("Creating tables in CRM Database...")
+    Base.metadata.create_all(bind=engine_crm, tables=crm_metadata_tables)
+
+    print("Creating tables in Commerce Database...")
+    Base.metadata.create_all(bind=engine_commerce, tables=commerce_metadata_tables)
+
+    # 2.5 Run auto-migrations for new columns on existing tables in Commerce DB
+    from sqlalchemy import text
+    with engine_commerce.connect() as conn:
+        # device_series
+        try:
+            conn.execute(text("SELECT device_type FROM device_series LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding 'device_type' column to 'device_series' table...")
+            try:
+                conn.execute(text("ALTER TABLE device_series ADD COLUMN device_type VARCHAR(50) NULL"))
+                conn.commit()
+            except Exception as e:
+                print(f"Failed to alter device_series: {e}")
+
+        # device_models
+        try:
+            conn.execute(text("SELECT device_type FROM device_models LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding 'device_type' column to 'device_models' table...")
+            try:
+                conn.execute(text("ALTER TABLE device_models ADD COLUMN device_type VARCHAR(50) NULL"))
+                conn.commit()
+            except Exception as e:
+                print(f"Failed to alter device_models: {e}")
+
+        # device_models series_id nullable migration
+        try:
+            print("Auto-Migration: Modifying 'device_models.series_id' to be NULLable...")
+            conn.execute(text("ALTER TABLE device_models MODIFY COLUMN series_id VARCHAR(26) NULL"))
+            conn.commit()
+        except Exception as e:
+            print(f"Failed to modify device_models.series_id: {e}")
+
+        # products
+        try:
+            conn.execute(text("SELECT device_type FROM products LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding 'device_type' column to 'products' table...")
+            try:
+                conn.execute(text("ALTER TABLE products ADD COLUMN device_type VARCHAR(50) NULL"))
+                conn.commit()
+            except Exception as e:
+                print(f"Failed to alter products: {e}")
+
+        # products category_id NULLable
+        try:
+            conn.execute(text("SET FOREIGN_KEY_CHECKS=0;"))
+            conn.execute(text("ALTER TABLE products MODIFY COLUMN category_id VARCHAR(26) NULL"))
+            conn.execute(text("ALTER TABLE device_series MODIFY COLUMN brand_id VARCHAR(26) NULL"))
+            conn.execute(text("ALTER TABLE device_models MODIFY COLUMN brand_id VARCHAR(26) NULL"))
+            conn.execute(text("SET FOREIGN_KEY_CHECKS=1;"))
+            conn.commit()
+        except Exception:
+            pass
+
+        # attribute_types (preset_values)
+        try:
+            conn.execute(text("SELECT preset_values FROM attribute_types LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding 'preset_values' column to 'attribute_types' table...")
+            try:
+                conn.execute(text("ALTER TABLE attribute_types ADD COLUMN preset_values JSON NULL"))
+                conn.commit()
+            except Exception as e:
+                print(f"Failed to alter attribute_types: {e}")
+
+        # customer_devices (storage_capacity)
+        try:
+            conn.execute(text("SELECT storage_capacity FROM customer_devices LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding 'storage_capacity' column to 'customer_devices' table...")
+            try:
+                conn.execute(text("ALTER TABLE customer_devices ADD COLUMN storage_capacity VARCHAR(100) NULL"))
+                conn.commit()
+            except Exception as e:
+                print(f"Failed to alter customer_devices: {e}")
+
+        # service_jobs (custom_service_name)
+        try:
+            conn.execute(text("SELECT custom_service_name FROM service_jobs LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding 'custom_service_name' column to 'service_jobs' table...")
+            try:
+                conn.execute(text("ALTER TABLE service_jobs ADD COLUMN custom_service_name VARCHAR(255) NULL"))
+                conn.commit()
+            except Exception as e:
+                print(f"Failed to alter service_jobs: {e}")
+
+        # migration_jobs table schema parity auto-migration
+        try:
+            conn.execute(text("SELECT current_phase FROM migration_jobs LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding missing worker & progress columns to 'migration_jobs' table...")
+            migration_jobs_alters = [
+                "ALTER TABLE migration_jobs ADD COLUMN current_phase VARCHAR(50) NOT NULL DEFAULT 'UPLOAD'",
+                "ALTER TABLE migration_jobs ADD COLUMN worker_id VARCHAR(64) NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN locked_at DATETIME NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN heartbeat_at DATETIME NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN lease_version BIGINT NOT NULL DEFAULT 1",
+                "ALTER TABLE migration_jobs ADD COLUMN cancel_requested_at DATETIME NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN current_batch INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN total_batches INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN last_successful_batch INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN warning_records INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN retry_count INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN expected_products INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN expected_variants INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN expected_media_items INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN expected_media_links INT NOT NULL DEFAULT 0",
+                "ALTER TABLE migration_jobs ADD COLUMN started_at DATETIME NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN completed_at DATETIME NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN failed_at DATETIME NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN finished_at DATETIME NULL",
+                "ALTER TABLE migration_jobs ADD COLUMN error_message TEXT NULL",
+            ]
+            for alter_sql in migration_jobs_alters:
+                try:
+                    conn.execute(text(alter_sql))
+                    conn.commit()
+                except Exception as e:
+                    print(f"Migration column alter note: {e}")
+
+        # media_library table schema parity auto-migration
+        try:
+            conn.execute(text("SELECT storage_path FROM media_library LIMIT 1"))
+        except Exception:
+            print("Auto-Migration: Adding missing columns to 'media_library' table...")
+            media_library_alters = [
+                "ALTER TABLE media_library ADD COLUMN storage_path VARCHAR(512) NULL",
+                "ALTER TABLE media_library ADD COLUMN exif_metadata JSON NULL",
+                "ALTER TABLE media_library ADD COLUMN cdn_url VARCHAR(512) NULL",
+                "ALTER TABLE media_library ADD COLUMN thumbnail_url VARCHAR(512) NULL",
+            ]
+            for alter_sql in media_library_alters:
+                try:
+                    conn.execute(text(alter_sql))
+                    conn.commit()
+                except Exception as e:
+                    print(f"Media library column alter note: {e}")
+    
+    print("All tables compiled and created successfully in their respective databases.")
+
+    # 3. Seed only the minimum bootstrap data needed to start the platform
+    db = SessionLocal()
+    try:
+        seed_bootstrap(db)
+    finally:
+        db.close()
+
+def seed_bootstrap(db: Session):
+    """
+    Seeds only the absolute minimum data required to boot the platform:
+      - System settings (media / store controls)
+      - Super Admin role, Administration department, General Administrator
+        designation  — required as FK dependencies for the admin user
+      - One Super Admin user account
+
+    All business data (brands, categories, products, extra roles /
+    departments / designations, etc.) must be entered via the Admin UI
+    after first login.
+    """
+    print("Seeding bootstrap system settings...")
+
+    # ── System Settings ────────────────────────────────────────────────────
+    settings_data = [
+        {
+            "setting_key": "GLOBAL_DISABLE",
+            "setting_value": {"enabled": False},
+            "description": "Global Kill Switch Controls",
+            "is_public": False,
+        },
+        {
+            "setting_key": "STORE_CLOSED",
+            "setting_value": {"closed": False, "reason": ""},
+            "description": "Storefront Operations Controls",
+            "is_public": True,
+        },
+        {
+            "setting_key": "media_store_original",
+            "setting_value": {"value": True},
+            "description": "Store raw original image file alongside WebP",
+            "is_public": False,
+        },
+        {
+            "setting_key": "media_max_size_mb",
+            "setting_value": {"value": 20},
+            "description": "Maximum upload file size in MB",
+            "is_public": True,
+        },
+        {
+            "setting_key": "media_webp_quality",
+            "setting_value": {"value": 88},
+            "description": "WebP compression quality (80-100)",
+            "is_public": False,
+        },
+        {
+            "setting_key": "media_cleanup_enabled",
+            "setting_value": {"value": True},
+            "description": "Async media garbage collection kill switch",
+            "is_public": False,
+        },
+        {
+            "setting_key": "media_cleanup_grace_hours",
+            "setting_value": {"value": 24},
+            "description": "Safety grace period before physical file deletion in hours",
+            "is_public": False,
+        },
+    ]
+
+    for s in settings_data:
+        existing = db.execute(
+            select(Setting).where(Setting.setting_key == s["setting_key"])
+        ).scalar_one_or_none()
+        if not existing:
+            db.add(Setting(
+                setting_id=str(ulid.ULID()),
+                setting_key=s["setting_key"],
+                group="system",
+                type="json",
+                setting_value=s["setting_value"],
+                description=s["description"],
+                is_public=s["is_public"],
+            ))
+            print(f"  + Setting: {s['setting_key']}")
+    db.commit()
+
+    # ── Super Admin Role (FK dependency for admin user) ────────────────────
+    super_admin_role = db.execute(
+        select(Role).where(Role.role_name == "Super Admin")
+    ).scalar_one_or_none()
+    if not super_admin_role:
+        super_admin_role = Role(
+            role_id=str(ulid.ULID()),
+            role_name="Super Admin",
+            role_prefix="ADM",
+            description="System Super Administrator",
+            is_system=True,
+            is_active=True,
+        )
+        db.add(super_admin_role)
+        db.commit()
+        print("  + Role: Super Admin")
+
+    # ── Administration Department (FK dependency for admin user) ───────────
+    admin_dept = db.execute(
+        select(Department).where(Department.name == "Administration")
+    ).scalar_one_or_none()
+    if not admin_dept:
+        admin_dept = Department(
+            department_id=str(ulid.ULID()),
+            name="Administration",
+            description="Global Admin Department",
+            is_active=True,
+        )
+        db.add(admin_dept)
+        db.commit()
+        print("  + Department: Administration")
+
+    # ── General Administrator Designation (FK dependency for admin user) ───
+    admin_desig = db.execute(
+        select(Designation).where(Designation.name == "General Administrator")
+    ).scalar_one_or_none()
+    if not admin_desig:
+        admin_desig = Designation(
+            designation_id=str(ulid.ULID()),
+            name="General Administrator",
+            description="Platform Operations Manager",
+            is_active=True,
+        )
+        db.add(admin_desig)
+        db.commit()
+        print("  + Designation: General Administrator")
+
+    # ── Super Admin User ───────────────────────────────────────────────────
+    super_admin_email = "admin@ifixkart.com"
+    existing_admin = db.execute(
+        select(User).where(User.email == super_admin_email)
+    ).scalar_one_or_none()
+    if not existing_admin:
+        db.add(User(
+            user_id=str(ulid.ULID()),
+            employee_code="ADM0001",
+            first_name="iFixKart",
+            last_name="Administrator",
+            display_name="iFixKart Admin",
+            email=super_admin_email,
+            phone="1000000000",
+            password_hash=hash_password("Admin$2026Setup"),
+            department_id=admin_dept.department_id,
+            designation_id=admin_desig.designation_id,
+            role_id=super_admin_role.role_id,
+            is_active=True,
+            email_verified=True,
+            phone_verified=True,
+        ))
+        db.commit()
+        print(f"  + Super Admin: {super_admin_email}  (password: Admin$2026Setup)")
+
+    print("Bootstrap complete. All business data must be added via the Admin UI.")
+
+if __name__ == "__main__":
+    initialize_database()

Backend/app/core/database/seed_catalog.py

@@ -0,0 +1,187 @@
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+import ulid
+from decimal import Decimal
+
+from app.core.database.db_session import SessionLocal
+from app.models.BrandModel import Brand
+from app.models.CategoryModel import Category
+from app.models.DeviceCatalogModel import DeviceSeries, DeviceModel, ServiceType, RepairService, RepairVariant
+from app.models.PartsModel import Part, RepairVariantPart
+from app.models.StockMovementModel import StockMovement
+
+def seed_catalog():
+    db = SessionLocal()
+    try:
+        print("Seeding catalog started...")
+        
+        # 1. Brands
+        brands_data = [
+            {"name": "Apple", "slug": "apple"},
+            {"name": "Samsung", "slug": "samsung"},
+            {"name": "OnePlus", "slug": "oneplus"},
+            {"name": "Vivo", "slug": "vivo"}
+        ]
+        seeded_brands = {}
+        for b in brands_data:
+            existing = db.execute(select(Brand).where(Brand.slug == b["slug"])).scalar_one_or_none()
+            if not existing:
+                brand = Brand(
+                    brand_id=str(ulid.ULID()),
+                    name=b["name"],
+                    slug=b["slug"],
+                    is_active=True
+                )
+                db.add(brand)
+                seeded_brands[b["slug"]] = brand
+                print(f"Seeded Brand: {b['name']}")
+            else:
+                seeded_brands[b["slug"]] = existing
+
+        # 2. Categories
+        cats_data = [
+            {"name": "Accessories", "slug": "accessories"},
+            {"name": "Screen Protectors", "slug": "screen-protectors"},
+            {"name": "Back Covers", "slug": "back-covers"}
+        ]
+        seeded_cats = {}
+        for c in cats_data:
+            existing = db.execute(select(Category).where(Category.slug == c["slug"])).scalar_one_or_none()
+            if not existing:
+                cat = Category(
+                    category_id=str(ulid.ULID()),
+                    name=c["name"],
+                    slug=c["slug"],
+                    is_active=True
+                )
+                db.add(cat)
+                seeded_cats[c["slug"]] = cat
+                print(f"Seeded Category: {c['name']}")
+            else:
+                seeded_cats[c["slug"]] = existing
+
+        # 3. Device Series
+        series_data = [
+            {"name": "iPhone Series", "slug": "iphone-series", "brand_slug": "apple"},
+            {"name": "Galaxy S Series", "slug": "galaxy-s-series", "brand_slug": "samsung"}
+        ]
+        seeded_series = {}
+        for s in series_data:
+            existing = db.execute(select(DeviceSeries).where(DeviceSeries.slug == s["slug"])).scalar_one_or_none()
+            if not existing:
+                brand = seeded_brands[s["brand_slug"]]
+                series = DeviceSeries(
+                    series_id=str(ulid.ULID()),
+                    brand_id=brand.brand_id,
+                    name=s["name"],
+                    slug=s["slug"],
+                    is_active=True
+                )
+                db.add(series)
+                seeded_series[s["slug"]] = series
+                print(f"Seeded Series: {s['name']}")
+            else:
+                seeded_series[s["slug"]] = existing
+
+        # 4. Device Models
+        models_data = [
+            {"name": "iPhone 16 Pro Max", "slug": "iphone-16-pro-max", "series_slug": "iphone-series", "brand_slug": "apple"},
+            {"name": "Galaxy S24 Ultra", "slug": "galaxy-s-24-ultra", "series_slug": "galaxy-s-series", "brand_slug": "samsung"}
+        ]
+        seeded_models = {}
+        for m in models_data:
+            existing = db.execute(select(DeviceModel).where(DeviceModel.slug == m["slug"])).scalar_one_or_none()
+            if not existing:
+                series = seeded_series[m["series_slug"]]
+                brand = seeded_brands[m["brand_slug"]]
+                model = DeviceModel(
+                    model_id=str(ulid.ULID()),
+                    series_id=series.series_id,
+                    brand_id=brand.brand_id,
+                    name=m["name"],
+                    slug=m["slug"],
+                    full_path=f"/repair/{brand.slug}/{series.slug}/{m['slug']}",
+                    is_active=True
+                )
+                db.add(model)
+                seeded_models[m["slug"]] = model
+                print(f"Seeded Model: {m['name']}")
+            else:
+                seeded_models[m["slug"]] = existing
+
+        # 5. Service Types
+        service_types_data = [
+            {"name": "Screen Replacement", "slug": "screen-replacement"},
+            {"name": "Battery Replacement", "slug": "battery-replacement"},
+            {"name": "Back Glass Repair", "slug": "back-glass-repair"}
+        ]
+        seeded_types = {}
+        for t in service_types_data:
+            existing = db.execute(select(ServiceType).where(ServiceType.slug == t["slug"])).scalar_one_or_none()
+            if not existing:
+                stype = ServiceType(
+                    service_type_id=str(ulid.ULID()),
+                    name=t["name"],
+                    slug=t["slug"],
+                    is_active=True
+                )
+                db.add(stype)
+                seeded_types[t["slug"]] = stype
+                print(f"Seeded Service Type: {t['name']}")
+            else:
+                seeded_types[t["slug"]] = existing
+
+        # 6. Physical Parts
+        parts_data = [
+            {"sku": "PART-IP16PM-SCR-ORG", "name": "iPhone 16 Pro Max Original Screen", "cost": 15000.0},
+            {"sku": "PART-IP16PM-SCR-COMP", "name": "iPhone 16 Pro Max Compatible Screen", "cost": 8000.0},
+            {"sku": "PART-GS24U-SCR-ORG", "name": "Galaxy S24 Ultra Original Screen", "cost": 13000.0},
+            {"sku": "PART-GLUE-T8000", "name": "Zhanlida T-8000 Adhesive Glue", "cost": 120.0},
+            {"sku": "PART-TAPE-SCR", "name": "Universal Screen Mounting Tape", "cost": 40.0}
+        ]
+        seeded_parts = {}
+        for p in parts_data:
+            existing = db.execute(select(Part).where(Part.sku == p["sku"])).scalar_one_or_none()
+            if not existing:
+                part = Part(
+                    part_id=str(ulid.ULID()),
+                    sku=p["sku"],
+                    name=p["name"],
+                    cost_price=Decimal(p["cost"]),
+                    is_active=True
+                )
+                db.add(part)
+                seeded_parts[p["sku"]] = part
+                print(f"Seeded Part SKU: {p['sku']}")
+            else:
+                seeded_parts[p["sku"]] = existing
+
+        db.commit()
+        
+        # 7. Add initial stock movements (Purchase / Adjustments) to simulate stock
+        for sku, part in seeded_parts.items():
+            # Check existing movements
+            exist_mov = db.execute(select(StockMovement).where(StockMovement.entity_id == part.part_id)).scalars().first()
+            if not exist_mov:
+                movement = StockMovement(
+                    movement_id=str(ulid.ULID()),
+                    entity_type="part",
+                    entity_id=part.part_id,
+                    movement_type="Adjustment",
+                    quantity=20, # start with 20 items in stock
+                    reference_type="ManualAdjustment",
+                    reference_id="SEED-001"
+                )
+                db.add(movement)
+                print(f"Added initial 20 stock movement for part: {sku}")
+        
+        db.commit()
+        print("Catalog seeding completed successfully.")
+    except Exception as e:
+        db.rollback()
+        print(f"Error seeding catalog: {e}")
+    finally:
+        db.close()
+
+if __name__ == "__main__":
+    seed_catalog()

Backend/app/core/invoice_generator.py

@@ -0,0 +1,418 @@
+"""
+@helper InvoiceGenerator (Backend/app/core/invoice_generator.py)
+@purpose Utilities to compile standard Letter-sized PDF invoices and compact 80mm thermal roll receipts on-the-fly using ReportLab.
+"""
+from io import BytesIO
+from reportlab.lib.pagesizes import letter
+from reportlab.lib import colors
+from reportlab.lib.units import inch
+from PIL import Image as PILImage
+from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, PageBreak, Image as RLImage
+from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
+from reportlab.lib.enums import TA_CENTER, TA_RIGHT, TA_LEFT
+from datetime import datetime
+import json
+import os
+from pathlib import Path
+
+def get_invoice_logo_element(max_w=2.0 * inch, max_h=0.8 * inch):
+    """
+    Finds the latest uploaded invoice branding logo in uploads/invoice_branding/logo/
+    and returns a ReportLab RLImage element.
+    """
+    backend_root = Path(__file__).resolve().parents[2]
+    logo_dir = backend_root / "uploads" / "invoice_branding" / "logo"
+    
+    if logo_dir.exists():
+        # Get active non-variant files sorted by modification time
+        files = [f for f in logo_dir.glob("*.*") if not any(s in f.name for s in ["_thumbnail", "_medium", "_large", "_raw"])]
+        if not files:
+            files = list(logo_dir.glob("*.*"))
+            
+        files = sorted(files, key=os.path.getmtime, reverse=True)
+        for logo_file in files:
+            try:
+                pil_img = PILImage.open(logo_file)
+                bio = BytesIO()
+                if pil_img.mode in ("RGBA", "P"):
+                    pil_img = pil_img.convert("RGBA")
+                else:
+                    pil_img = pil_img.convert("RGB")
+                    
+                pil_img.save(bio, format="PNG")
+                bio.seek(0)
+                
+                w, h = pil_img.size
+                if w <= 0 or h <= 0:
+                    continue
+                aspect = h / float(w)
+                render_w = max_w
+                render_h = max_w * aspect
+                if render_h > max_h:
+                    render_h = max_h
+                    render_w = max_h / aspect
+                    
+                return RLImage(bio, width=render_w, height=render_h)
+            except Exception as e:
+                print(f"Error loading logo {logo_file}: {e}")
+                continue
+    return None
+
+def get_invoice_branding_data(db=None):
+    company_name = "iFixKart"
+    gstin = "33AAAAA0000A1Z5"
+    address = "Offline Main Store Counter, Chennai | +91 9876543210"
+    gst_rate = 18.0
+    
+    if db:
+        try:
+            from app.models.SettingModel import Setting
+            setting = db.query(Setting).filter(Setting.setting_key == "invoice_branding").first()
+            if setting and setting.setting_value:
+                val = setting.setting_value
+                if isinstance(val, dict):
+                    company_name = val.get("companyName") or company_name
+                    gstin = val.get("gstin") or gstin
+                    address = val.get("storeAddress") or address
+                    if "gstRate" in val and val["gstRate"] is not None:
+                        try:
+                            gst_rate = float(val["gstRate"])
+                        except (ValueError, TypeError):
+                            pass
+        except Exception:
+            pass
+            
+    return {
+        "companyName": company_name,
+        "gstin": gstin,
+        "storeAddress": address,
+        "gstRate": gst_rate
+    }
+
+def generate_invoice_pdf(order, customer, order_items, db=None) -> bytes:
+    """
+    Generate a professional standard Letter-size GST Invoice on-the-fly.
+    """
+    buffer = BytesIO()
+    doc = SimpleDocTemplate(
+        buffer,
+        pagesize=letter,
+        rightMargin=36,
+        leftMargin=36,
+        topMargin=36,
+        bottomMargin=36
+    )
+
+    styles = getSampleStyleSheet()
+    
+    # Custom styles
+    title_style = ParagraphStyle(
+        'InvoiceTitle',
+        parent=styles['Heading1'],
+        fontName='Helvetica-Bold',
+        fontSize=22,
+        textColor=colors.HexColor('#1b2559'),
+        spaceAfter=4
+    )
+    
+    subtitle_style = ParagraphStyle(
+        'InvoiceSubtitle',
+        parent=styles['Normal'],
+        fontName='Helvetica-Bold',
+        fontSize=10,
+        textColor=colors.HexColor('#e4382f'),
+        spaceAfter=10
+    )
+    
+    label_style = ParagraphStyle(
+        'MetaLabel',
+        parent=styles['Normal'],
+        fontName='Helvetica-Bold',
+        fontSize=9,
+        textColor=colors.HexColor('#94a3b8'),
+        spaceAfter=3
+    )
+
+    text_style = ParagraphStyle(
+        'MetaText',
+        parent=styles['Normal'],
+        fontName='Helvetica',
+        fontSize=9,
+        textColor=colors.HexColor('#1e293b'),
+        spaceAfter=3
+    )
+
+    bold_text_style = ParagraphStyle(
+        'MetaTextBold',
+        parent=styles['Normal'],
+        fontName='Helvetica-Bold',
+        fontSize=9,
+        textColor=colors.HexColor('#1e293b'),
+        spaceAfter=3
+    )
+
+    story = []
+
+    # 1. Header (Logo/Title & Metadata)
+    logo_element = get_invoice_logo_element(max_w=2.2 * inch, max_h=0.85 * inch)
+    
+    left_cell = []
+    if logo_element:
+        left_cell.append(logo_element)
+    else:
+        left_cell.append(Paragraph("GST INVOICE", title_style))
+        left_cell.append(Paragraph("iFixKart Solutions Platform", subtitle_style))
+
+    header_data = [
+        [
+            left_cell,
+            Paragraph(f"<b>GST INVOICE</b><br/><b>Invoice No:</b> INV-{order.order_no.split('-')[-1]}<br/><b>Date:</b> {order.created_at.strftime('%d-%b-%Y')}<br/><b>Status:</b> {order.status}", ParagraphStyle('RightText', parent=text_style, alignment=TA_RIGHT))
+        ]
+    ]
+    
+    header_table = Table(header_data, colWidths=[3.5 * inch, 4.0 * inch])
+    header_table.setStyle(TableStyle([
+        ('VALIGN', (0,0), (-1,-1), 'TOP'),
+        ('BOTTOMPADDING', (0,0), (-1,-1), 0),
+        ('TOPPADDING', (0,0), (-1,-1), 0),
+    ]))
+    story.append(header_table)
+    story.append(Spacer(1, 15))
+
+    # 2. Billing & Store Coordinates
+    branding = get_invoice_branding_data(db)
+    seller_html = f"<b>{branding['companyName']}</b><br/>{branding['storeAddress']}<br/><b>GSTIN:</b> {branding['gstin']}"
+
+    # Parse shipping address
+    cust_addr_str = "Customer Billing Details"
+    if order.shipping_address_json:
+        try:
+            addr = json.loads(order.shipping_address_json)
+            cust_addr_str = f"<b>{addr.get('full_name')}</b><br/>{addr.get('street_address')}<br/>{addr.get('city')}, {addr.get('state')} - {addr.get('pincode')}<br/>Phone: {addr.get('phone')}"
+        except Exception:
+            cust_addr_str = order.shipping_address_json
+
+    details_data = [
+        [
+            Paragraph("SELLER (IFIXKART STORE)", label_style),
+            Paragraph("BILLED TO (CUSTOMER)", label_style)
+        ],
+        [
+            Paragraph(seller_html, text_style),
+            Paragraph(cust_addr_str, text_style)
+        ]
+    ]
+    details_table = Table(details_data, colWidths=[3.75 * inch, 3.75 * inch])
+    details_table.setStyle(TableStyle([
+        ('VALIGN', (0,0), (-1,-1), 'TOP'),
+        ('BACKGROUND', (0,0), (-1,-1), colors.HexColor('#f8fafc')),
+        ('PADDING', (0,0), (-1,-1), 10),
+        ('BOX', (0,0), (-1,-1), 0.5, colors.HexColor('#e2e8f0')),
+    ]))
+    story.append(details_table)
+    story.append(Spacer(1, 20))
+
+    # 3. Items Table
+    th_style = ParagraphStyle('TH', parent=styles['Normal'], fontName='Helvetica-Bold', fontSize=9, textColor=colors.white)
+    th_right = ParagraphStyle('THR', parent=styles['Normal'], fontName='Helvetica-Bold', fontSize=9, textColor=colors.white, alignment=TA_RIGHT)
+    
+    td_style = ParagraphStyle('TD', parent=styles['Normal'], fontName='Helvetica', fontSize=9, textColor=colors.HexColor('#334155'))
+    td_right = ParagraphStyle('TDR', parent=styles['Normal'], fontName='Helvetica', fontSize=9, textColor=colors.HexColor('#334155'), alignment=TA_RIGHT)
+
+    table_data = [[
+        Paragraph("S.No", th_style),
+        Paragraph("Item SKU & Name", th_style),
+        Paragraph("Unit Price", th_right),
+        Paragraph("Qty", th_right),
+        Paragraph("Total Price", th_right)
+    ]]
+
+    for idx, item in enumerate(order_items):
+        table_data.append([
+            Paragraph(str(idx + 1), td_style),
+            Paragraph(f"<b>{item.sku}</b> - {item.product_name}", td_style),
+            Paragraph(f"Rs. {float(item.unit_price):.2f}", td_right),
+            Paragraph(str(item.quantity), td_right),
+            Paragraph(f"Rs. {float(item.total_price):.2f}", td_right)
+        ])
+
+    items_table = Table(table_data, colWidths=[0.5 * inch, 3.8 * inch, 1.1 * inch, 0.6 * inch, 1.5 * inch])
+    items_table.setStyle(TableStyle([
+        ('BACKGROUND', (0,0), (-1,0), colors.HexColor('#1b2559')),
+        ('ALIGN', (0,0), (-1,-1), 'LEFT'),
+        ('VALIGN', (0,0), (-1,-1), 'MIDDLE'),
+        ('BOTTOMPADDING', (0,0), (-1,-1), 8),
+        ('TOPPADDING', (0,0), (-1,-1), 8),
+        ('GRID', (0,0), (-1,-1), 0.5, colors.HexColor('#cbd5e1')),
+    ]))
+    story.append(items_table)
+    story.append(Spacer(1, 15))
+
+    # 4. Totals & Tax Calculation Breakdown
+    subtotal = float(order.total_amount)
+    tax_amount = float(order.tax_amount)
+    gst_rate = float(branding.get("gstRate", 18.0))
+    half_rate = round(gst_rate / 2.0, 1)
+    cgst = round(tax_amount / 2, 2)
+    sgst = round(tax_amount / 2, 2)
+    igst = 0.0
+
+    totals_data = [
+        [Paragraph("", text_style), Paragraph("Taxable Value:", label_style), Paragraph(f"Rs. {subtotal:.2f}", td_right)],
+        [Paragraph("", text_style), Paragraph(f"CGST ({half_rate:.1f}%):", label_style), Paragraph(f"Rs. {cgst:.2f}", td_right)],
+        [Paragraph("", text_style), Paragraph(f"SGST ({half_rate:.1f}%):", label_style), Paragraph(f"Rs. {sgst:.2f}", td_right)],
+        [Paragraph("", text_style), Paragraph("IGST (0.0%):", label_style), Paragraph(f"Rs. {igst:.2f}", td_right)],
+        [Paragraph("", text_style), Paragraph("<b>Grand Total:</b>", ParagraphStyle('GrandLabel', parent=label_style, fontSize=11, textColor=colors.HexColor('#1b2559'))), Paragraph(f"<b>Rs. {float(order.final_amount):.2f}</b>", ParagraphStyle('GrandVal', parent=td_right, fontSize=11, fontName='Helvetica-Bold', textColor=colors.HexColor('#1b2559')))]
+    ]
+    
+    totals_table = Table(totals_data, colWidths=[4.2 * inch, 1.8 * inch, 1.5 * inch])
+    totals_table.setStyle(TableStyle([
+        ('VALIGN', (0,0), (-1,-1), 'MIDDLE'),
+        ('LINEBELOW', (1,0), (-1,-2), 0.5, colors.HexColor('#e2e8f0')),
+        ('TOPPADDING', (0,0), (-1,-1), 4),
+        ('BOTTOMPADDING', (0,0), (-1,-1), 4),
+    ]))
+    story.append(totals_table)
+    story.append(Spacer(1, 50))
+
+    # 5. Legal Footer
+    footer_text = Paragraph(
+        "This is a computer-generated GST Tax Invoice. No signature is required. Thank you for choosing iFixKart!",
+        ParagraphStyle('Footer', parent=styles['Normal'], fontName='Helvetica-Oblique', fontSize=8, textColor=colors.HexColor('#94a3b8'), alignment=TA_CENTER)
+    )
+    story.append(footer_text)
+
+    doc.build(story)
+    pdf_bytes = buffer.getvalue()
+    buffer.close()
+    return pdf_bytes
+
+def generate_thermal_invoice_pdf(order, customer, order_items) -> bytes:
+    """
+    Generate an 80mm thermal roll print receipt (walking invoice format) on-the-fly.
+    Page width is exactly 80mm (approx 226 pt). Page length is dynamic/extended (e.g. 450 pt).
+    """
+    buffer = BytesIO()
+    
+    # 80mm roll size: 226pt wide, 450pt tall
+    doc = SimpleDocTemplate(
+        buffer,
+        pagesize=(226, 450),
+        rightMargin=10,
+        leftMargin=10,
+        topMargin=15,
+        bottomMargin=15
+    )
+
+    styles = getSampleStyleSheet()
+    
+    title_style = ParagraphStyle(
+        'ThermalTitle',
+        parent=styles['Heading2'],
+        fontName='Helvetica-Bold',
+        fontSize=12,
+        textColor=colors.black,
+        alignment=TA_CENTER,
+        spaceAfter=2
+    )
+
+    subtitle_style = ParagraphStyle(
+        'ThermalSubtitle',
+        parent=styles['Normal'],
+        fontName='Helvetica-Bold',
+        fontSize=8,
+        textColor=colors.black,
+        alignment=TA_CENTER,
+        spaceAfter=10
+    )
+
+    text_style = ParagraphStyle(
+        'ThermalText',
+        parent=styles['Normal'],
+        fontName='Helvetica',
+        fontSize=7,
+        textColor=colors.black,
+        spaceAfter=2
+    )
+
+    text_right = ParagraphStyle(
+        'ThermalTextRight',
+        parent=text_style,
+        alignment=TA_RIGHT
+    )
+
+    story = []
+
+    # 1. Header
+    thermal_logo = get_invoice_logo_element(max_w=1.8 * inch, max_h=0.6 * inch)
+    if thermal_logo:
+        thermal_logo.hAlign = 'CENTER'
+        story.append(thermal_logo)
+        story.append(Spacer(1, 4))
+        
+    story.append(Paragraph("iFixKart Retail POS", title_style))
+    story.append(Paragraph("Solutions Pvt Ltd - Store #1<br/>100 Tech Arcade Main Road, Chennai<br/>GSTIN: 33AAFCI8824J1ZP", subtitle_style))
+    story.append(Spacer(1, 5))
+
+    # 2. Transaction Meta Info
+    story.append(Paragraph(f"<b>Invoice:</b> walk_inv_{order.order_id[:8]}", text_style))
+    story.append(Paragraph(f"<b>Order No:</b> {order.order_no}", text_style))
+    story.append(Paragraph(f"<b>Date:</b> {order.created_at.strftime('%d-%b-%Y %H:%M')}", text_style))
+    payment_method = getattr(order, "payment_method", None) or "COD"
+    story.append(Paragraph(f"<b>Payment:</b> {payment_method} ({order.payment_status})", text_style))
+    story.append(Spacer(1, 10))
+
+    # 3. Item List Header
+    item_header = [
+        [Paragraph("<b>Item Description</b>", text_style), Paragraph("<b>Qty</b>", text_right), Paragraph("<b>Total</b>", text_right)]
+    ]
+    
+    # 4. Item List Rows
+    for item in order_items:
+        # Truncate long names to save receipt slip width
+        short_name = item.product_name[:24] + '..' if len(item.product_name) > 26 else item.product_name
+        item_header.append([
+            Paragraph(f"{item.sku}<br/>{short_name}", text_style),
+            Paragraph(str(item.quantity), text_right),
+            Paragraph(f"Rs. {float(item.total_price):.1f}", text_right)
+        ])
+
+    # Table Widths: item=120pt, qty=30pt, total=56pt -> Total 206pt
+    items_table = Table(item_header, colWidths=[120, 30, 56])
+    items_table.setStyle(TableStyle([
+        ('LINEBELOW', (0,0), (-1,0), 0.5, colors.black),
+        ('LINEBELOW', (0,-1), (-1,-1), 0.5, colors.black),
+        ('PADDING', (0,0), (-1,-1), 3),
+        ('VALIGN', (0,0), (-1,-1), 'MIDDLE'),
+    ]))
+    story.append(items_table)
+    story.append(Spacer(1, 8))
+
+    # 5. Taxes & Total Breakout
+    tax_amount = float(order.tax_amount)
+    cgst = round(tax_amount / 2, 2)
+    sgst = round(tax_amount / 2, 2)
+
+    totals_data = [
+        [Paragraph("Taxable Value:", text_style), Paragraph(f"Rs. {float(order.total_amount):.2f}", text_right)],
+        [Paragraph("CGST (9%):", text_style), Paragraph(f"Rs. {cgst:.2f}", text_right)],
+        [Paragraph("SGST (9%):", text_style), Paragraph(f"Rs. {sgst:.2f}", text_right)],
+        [Paragraph("<b>Grand Total:</b>", ParagraphStyle('GrandLabelThermal', parent=text_style, fontName='Helvetica-Bold', fontSize=9)), Paragraph(f"<b>Rs. {float(order.final_amount):.2f}</b>", ParagraphStyle('GrandValThermal', parent=text_right, fontName='Helvetica-Bold', fontSize=9))]
+    ]
+    
+    totals_table = Table(totals_data, colWidths=[110, 96])
+    totals_table.setStyle(TableStyle([
+        ('LINEABOVE', (0,-1), (-1,-1), 0.5, colors.black),
+        ('PADDING', (0,0), (-1,-1), 2),
+    ]))
+    story.append(totals_table)
+    story.append(Spacer(1, 20))
+
+    # 6. Thermal Footer
+    story.append(Paragraph("Thank you for your purchase!", ParagraphStyle('F1', parent=text_style, fontName='Helvetica-Bold', alignment=TA_CENTER)))
+    story.append(Paragraph("For support: support@ifixkart.com", ParagraphStyle('F2', parent=text_style, alignment=TA_CENTER)))
+
+    doc.build(story)
+    pdf_bytes = buffer.getvalue()
+    buffer.close()
+    return pdf_bytes

Backend/app/core/media/media_garbage_collector.py

@@ -0,0 +1,378 @@
+"""
+@module media_garbage_collector (Backend/app/core/media/media_garbage_collector.py)
+@purpose Hardened Production Media Management & Asynchronous Garbage Collector with state machine tracking, 2-step transactions, path traversal validation, and conservative 4-class reconciliation.
+"""
+
+import os
+import logging
+from pathlib import Path
+from datetime import datetime, timedelta
+from typing import List, Dict, Any, Optional
+from threading import Lock
+
+from sqlalchemy.orm import Session
+from sqlalchemy import select, text
+
+from app.models.FileUploadModel import FileUpload
+from app.models.SettingModel import Setting
+
+logger = logging.getLogger(__name__)
+
+# Absolute Upload Root Path Safety Constraint
+BACKEND_ROOT = Path(__file__).resolve().parents[3]
+UPLOAD_ROOT = (BACKEND_ROOT / "uploads").resolve()
+
+# In-memory per-file mutex lock registry to coordinate cleanup and re-attachment
+_PER_FILE_LOCKS: Dict[str, Lock] = {}
+_LOCKS_MUTEX = Lock()
+
+# Cache for untracked disk files seen during reconciliation
+_UNTRACKED_DISK_FILES: Dict[str, datetime] = {}
+
+
+def get_per_file_lock(file_id: str) -> Lock:
+    """Returns a thread-safe mutex lock for a specific file_id."""
+    with _LOCKS_MUTEX:
+        if file_id not in _PER_FILE_LOCKS:
+            _PER_FILE_LOCKS[file_id] = Lock()
+        return _PER_FILE_LOCKS[file_id]
+
+
+def get_media_settings(db: Session) -> Dict[str, Any]:
+    """Extracts media configuration settings from the database with default fallbacks."""
+    settings = {
+        "media_store_original": True,
+        "media_max_size_mb": 20,
+        "media_webp_quality": 88,
+        "media_cleanup_enabled": True,
+        "media_cleanup_grace_hours": 24,
+    }
+    
+    try:
+        results = db.execute(
+            select(Setting).where(Setting.setting_key.in_(settings.keys()))
+        ).scalars().all()
+        
+        for s in results:
+            val = s.setting_value
+            if isinstance(val, dict) and "value" in val:
+                val = val["value"]
+            settings[s.setting_key] = val
+    except Exception as exc:
+        logger.warning(f"Could not read media settings from DB, using defaults: {exc}")
+
+    return settings
+
+
+def safe_resolve_path(rel_path: Optional[str]) -> Optional[Path]:
+    """
+    Path Traversal Security Constraint:
+    Ensures that any file path resolves strictly inside UPLOAD_ROOT.
+    """
+    if not rel_path or not rel_path.strip():
+        return None
+
+    clean = rel_path.lstrip("/")
+    resolved = (BACKEND_ROOT / clean).resolve()
+
+    try:
+        if resolved.is_relative_to(UPLOAD_ROOT):
+            return resolved
+    except AttributeError:
+        # Python < 3.9 fallback
+        if str(resolved).startswith(str(UPLOAD_ROOT)):
+            return resolved
+
+    logger.error(f"SECURITY ALERT: Path traversal attempt blocked for path: {rel_path}")
+    return None
+
+
+def attach_file(db: Session, file_id: str) -> bool:
+    """
+    Synchronous Re-Attachment Recovery:
+    Flips an ORPHANED or PENDING_DELETE file back to ACTIVE when re-attached.
+    Re-attaching a DELETED file raises ValueError.
+    """
+    lock = get_per_file_lock(file_id)
+    with lock:
+        record = db.execute(
+            select(FileUpload).where(FileUpload.file_id == file_id).with_for_update()
+        ).scalar_one_or_none()
+
+        if not record:
+            return False
+
+        if record.status == "DELETED":
+            raise ValueError(f"File {file_id} assets have been permanently deleted and cannot be re-attached.")
+
+        if record.status in ("ORPHANED", "PENDING_DELETE", "INCONSISTENT"):
+            record.status = "ACTIVE"
+            record.orphaned_at = None
+            record.cleanup_claimed_at = None
+            record.cleanup_started_at = None
+            record.last_cleanup_error = None
+            db.commit()
+            logger.info(f"Re-attached file {file_id}: status restored to ACTIVE.")
+
+        return True
+
+
+def mark_images_orphaned(db: Session, removed_file_ids: List[str]):
+    """
+    Update Trigger: Marks removed file_ids as ORPHANED candidates.
+    Does not reset orphaned_at if file is already ORPHANED.
+    """
+    if not removed_file_ids:
+        return
+
+    now = datetime.utcnow()
+    records = db.execute(
+        select(FileUpload).where(FileUpload.file_id.in_(removed_file_ids))
+    ).scalars().all()
+
+    for record in records:
+        if record.status == "ACTIVE":
+            record.status = "ORPHANED"
+            record.orphaned_at = now
+            logger.info(f"Marked file {record.file_id} as ORPHANED.")
+
+    db.commit()
+
+
+def count_db_references(db: Session, file_record: FileUpload) -> int:
+    """
+    Authoritative DB Reference Counter:
+    Checks if a file_id or its paths are referenced in products, variants, categories, brands, or storefront sections.
+    """
+    file_id = file_record.file_id
+    paths = [p for p in [file_record.webp_path, file_record.storage_path, file_record.raw_path] if p]
+
+    total_refs = 0
+
+    # 1. Product Images
+    try:
+        query = text("""
+            SELECT COUNT(*) FROM product_images 
+            WHERE image_id = :fid OR image_url IN :paths
+        """)
+        total_refs += db.execute(query, {"fid": file_id, "paths": tuple(paths or ["__none__"])}).scalar() or 0
+    except Exception:
+        pass
+
+    # 2. Product Variant Images
+    try:
+        query = text("""
+            SELECT COUNT(*) FROM product_variant_images 
+            WHERE image_url IN :paths
+        """)
+        total_refs += db.execute(query, {"paths": tuple(paths or ["__none__"])}).scalar() or 0
+    except Exception:
+        pass
+
+    # 3. Categories
+    try:
+        query = text("""
+            SELECT COUNT(*) FROM categories 
+            WHERE image_url IN :paths OR icon_url IN :paths
+        """)
+        total_refs += db.execute(query, {"paths": tuple(paths or ["__none__"])}).scalar() or 0
+    except Exception:
+        pass
+
+    # 4. Brands
+    try:
+        query = text("""
+            SELECT COUNT(*) FROM brands 
+            WHERE logo_url IN :paths
+        """)
+        total_refs += db.execute(query, {"paths": tuple(paths or ["__none__"])}).scalar() or 0
+    except Exception:
+        pass
+
+    return total_refs
+
+
+def process_async_media_cleanup(db: Session):
+    """
+    Asynchronous Garbage Collector:
+    Transaction 1: Claims candidates -> PENDING_DELETE (SKIP LOCKED).
+    Per-File Lock -> FINAL Reference Check -> Idempotent Physical Deletion -> Transaction 2: DELETED.
+    """
+    settings = get_media_settings(db)
+    if not settings.get("media_cleanup_enabled", True):
+        logger.info("Media cleanup is currently disabled by Admin kill switch.")
+        return
+
+    grace_hours = int(settings.get("media_cleanup_grace_hours", 24))
+    grace_threshold = datetime.utcnow() - timedelta(hours=grace_hours)
+
+    # 1. Transaction 1: Claim Candidates via FOR UPDATE SKIP LOCKED
+    candidates = []
+    try:
+        query = (
+            select(FileUpload)
+            .where(
+                FileUpload.status == "ORPHANED",
+                FileUpload.orphaned_at <= grace_threshold,
+                FileUpload.cleanup_attempts < 5
+            )
+            .with_for_update(skip_locked=True)
+            .limit(50)
+        )
+        candidates = db.execute(query).scalars().all()
+        
+        now = datetime.utcnow()
+        for record in candidates:
+            record.status = "PENDING_DELETE"
+            record.cleanup_claimed_at = now
+            
+        db.commit()
+    except Exception as exc:
+        db.rollback()
+        logger.error(f"Error claiming candidate media records for cleanup: {exc}")
+        return
+
+    if not candidates:
+        return
+
+    # 2. Process each claimed candidate with per-file lock & final reference check
+    for record in candidates:
+        file_id = record.file_id
+        lock = get_per_file_lock(file_id)
+
+        with lock:
+            # Re-fetch record inside lock
+            rec = db.execute(select(FileUpload).where(FileUpload.file_id == file_id)).scalar_one_or_none()
+            if not rec or rec.status != "PENDING_DELETE":
+                continue
+
+            # FINAL PRE-DELETE REFERENCE CHECK
+            ref_count = count_db_references(db, rec)
+            if ref_count > 0:
+                logger.info(f"Final Pre-Delete Check: File {file_id} is referenced by {ref_count} entities. Aborting delete & reverting to ACTIVE.")
+                rec.status = "ACTIVE"
+                rec.orphaned_at = None
+                rec.cleanup_claimed_at = None
+                db.commit()
+                continue
+
+            # Proceed with physical file deletion
+            rec.cleanup_started_at = datetime.utcnow()
+            db.commit()
+
+            targets = [
+                rec.raw_path,
+                rec.webp_path,
+                rec.thumbnail_path,
+                rec.medium_path,
+                rec.large_path,
+                rec.storage_path
+            ]
+
+            deletion_errors = []
+            for rel in set(filter(None, targets)):
+                resolved = safe_resolve_path(rel)
+                if resolved:
+                    try:
+                        if resolved.exists():
+                            resolved.unlink()
+                            logger.info(f"Unlinked file asset: {resolved}")
+                    except Exception as err:
+                        error_msg = f"Failed to delete physical file {resolved}: {err}"
+                        logger.error(error_msg)
+                        deletion_errors.append(error_msg)
+
+            if deletion_errors:
+                rec.cleanup_attempts += 1
+                rec.last_cleanup_error = "; ".join(deletion_errors)
+                rec.status = "ORPHANED"
+                rec.cleanup_claimed_at = None
+                rec.cleanup_started_at = None
+                db.commit()
+            else:
+                rec.status = "DELETED"
+                rec.deleted_at = datetime.utcnow()
+                rec.last_cleanup_error = None
+                db.commit()
+                logger.info(f"Successfully cleaned up and marked file {file_id} as DELETED.")
+
+
+def reconcile_media_database(db: Session):
+    """
+    Conservative 4-Class Daily Media Reconciliation Worker:
+    Class 1 (Known + Referenced) -> ACTIVE
+    Class 2 (Known + Unreferenced) -> ORPHANED (preserves existing orphaned_at)
+    Class 3 (Known DB + Missing Disk) -> INCONSISTENT
+    Class 4 (Unknown Disk File) -> UNTRACKED (purged only if age > 48 hours)
+    """
+    logger.info("Starting Conservative Media Reconciliation Worker...")
+    now = datetime.utcnow()
+    
+    # 1. Scan DB file_uploads
+    uploads = db.execute(select(FileUpload)).scalars().all()
+    
+    for rec in uploads:
+        if rec.status == "DELETED":
+            continue
+
+        ref_count = count_db_references(db, rec)
+        
+        # Check disk existence
+        main_path = safe_resolve_path(rec.webp_path or rec.storage_path or rec.raw_path)
+        disk_exists = main_path and main_path.exists()
+
+        if disk_exists and ref_count > 0:
+            # Class 1: Known + Referenced
+            if rec.status != "ACTIVE":
+                rec.status = "ACTIVE"
+                rec.orphaned_at = None
+        elif disk_exists and ref_count == 0:
+            # Class 2: Known + Unreferenced
+            if rec.status == "ACTIVE":
+                rec.status = "ORPHANED"
+                rec.orphaned_at = now  # Set clock
+            elif rec.status == "ORPHANED":
+                pass  # Preserve existing orphaned_at timestamp!
+        elif not disk_exists and rec.status != "DELETED":
+            # Class 3: Known DB + Missing Disk
+            rec.status = "INCONSISTENT"
+            rec.last_cleanup_error = "Physical file asset missing from server disk storage."
+
+        rec.last_reconciled_at = now
+
+    db.commit()
+
+    # 2. Class 4: Scan Unknown Disk Files (Constrained to UPLOAD_ROOT)
+    if UPLOAD_ROOT.exists():
+        for root, _, files in os.walk(UPLOAD_ROOT):
+            for fname in files:
+                fpath = Path(root) / fname
+                try:
+                    rel_path = f"/uploads/{fpath.relative_to(UPLOAD_ROOT)}"
+                except ValueError:
+                    continue
+                
+                # Check if path is known in file_uploads
+                is_known = db.execute(
+                    select(FileUpload).where(
+                        (FileUpload.webp_path == rel_path) |
+                        (FileUpload.raw_path == rel_path) |
+                        (FileUpload.storage_path == rel_path)
+                    )
+                ).scalar_one_or_none()
+
+                if not is_known:
+                    if str(fpath) not in _UNTRACKED_DISK_FILES:
+                        _UNTRACKED_DISK_FILES[str(fpath)] = now
+                    else:
+                        first_seen = _UNTRACKED_DISK_FILES[str(fpath)]
+                        # Purge untracked file only if age > 48 hours
+                        if (now - first_seen) > timedelta(hours=48):
+                            try:
+                                fpath.unlink()
+                                logger.info(f"Class 4 Untracked Cleanup: Unlinked 48h+ old untracked file: {fpath}")
+                                del _UNTRACKED_DISK_FILES[str(fpath)]
+                            except Exception as e:
+                                logger.error(f"Failed to delete untracked file {fpath}: {e}")
+
+    logger.info("Media Reconciliation Worker completed successfully.")

Backend/app/core/middleware/audit_context.py

@@ -0,0 +1,7 @@
+import contextvars
+from typing import Optional
+
+request_id_var: contextvars.ContextVar[Optional[str]] = contextvars.ContextVar("request_id", default=None)
+user_id_var: contextvars.ContextVar[Optional[str]] = contextvars.ContextVar("user_id", default=None)
+ip_address_var: contextvars.ContextVar[Optional[str]] = contextvars.ContextVar("ip_address", default=None)
+user_agent_var: contextvars.ContextVar[Optional[str]] = contextvars.ContextVar("user_agent", default=None)

Backend/app/core/middleware/audit_middleware.py

@@ -0,0 +1,32 @@
+from fastapi import Request
+from starlette.middleware.base import BaseHTTPMiddleware
+from app.core.middleware.audit_context import request_id_var, user_id_var, ip_address_var, user_agent_var
+import ulid
+
+class AuditMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        # 1. Set IP Address
+        x_forwarded_for = request.headers.get("x-forwarded-for")
+        ip = x_forwarded_for.split(",")[0].strip() if x_forwarded_for else (request.client.host if request.client else "127.0.0.1")
+        
+        token_ip = ip_address_var.set(ip)
+        token_ua = user_agent_var.set(request.headers.get("user-agent", ""))
+        
+        # 2. Set request ID
+        req_id = getattr(request.state, "request_id", None)
+        if not req_id:
+            req_id = str(ulid.ULID())
+            request.state.request_id = req_id
+        token_req = request_id_var.set(req_id)
+        
+        # Default user_id to None
+        token_user = user_id_var.set(None)
+        
+        try:
+            response = await call_next(request)
+            return response
+        finally:
+            ip_address_var.reset(token_ip)
+            user_agent_var.reset(token_ua)
+            request_id_var.reset(token_req)
+            user_id_var.reset(token_user)

Backend/app/core/middleware/kill_switch_middleware.py

@@ -0,0 +1,57 @@
+from fastapi import Request
+from starlette.middleware.base import BaseHTTPMiddleware
+from starlette.responses import JSONResponse
+from sqlalchemy.orm import Session
+from app.core.database.db_session import SessionLocal
+from app.models.SettingModel import Setting
+from jose import jwt, JWTError
+from app.core.config.Config import settings, load_public_key_bytes
+
+MASTER_ADMIN_EMAIL = "adithiyan.elan@gmail.com"
+
+class KillSwitchMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        # Allow docs and OpenAPI schemas to always bypass
+        if request.url.path in ["/docs", "/redoc", "/openapi.json"]:
+            return await call_next(request)
+
+        # Open db session safely
+        db: Session = SessionLocal()
+        global_disable = False
+        try:
+            # Query the GLOBAL_DISABLE setting key
+            item = db.query(Setting).filter(Setting.setting_key == "GLOBAL_DISABLE").first()
+            if item:
+                # Expecting value like {"enabled": true}
+                val = item.setting_value
+                if isinstance(val, dict) and val.get("enabled") is True:
+                    global_disable = True
+        except Exception:
+            # If database lookup fails, fail secure or run normally?
+            # Let's run normally to prevent site breakdown during DB connection blips,
+            # but log the failure in real setups.
+            pass
+        finally:
+            db.close()
+
+        if not global_disable:
+            return await call_next(request)
+
+        # Bypass check for MASTER ADMIN
+        auth_header = request.headers.get("Authorization")
+        if auth_header and auth_header.startswith("Bearer "):
+            token = auth_header.split(" ")[1]
+            try:
+                public_key = load_public_key_bytes()
+                payload = jwt.decode(token, public_key, algorithms=[settings.ALGORITHM])
+                email = payload.get("email")
+                if email == MASTER_ADMIN_EMAIL:
+                    # Let master bypass the lock
+                    return await call_next(request)
+            except JWTError:
+                pass
+
+        return JSONResponse(
+            status_code=403,
+            content={"detail": "SYSTEM DISABLED BY EMERGENCY KILL SWITCH"}
+        )

Backend/app/core/middleware/security_middleware.py

@@ -0,0 +1,54 @@
+from fastapi import Request, HTTPException, status
+from starlette.middleware.base import BaseHTTPMiddleware
+from starlette.responses import JSONResponse
+from app.core.config.Config import settings
+
+class SecurityHeadersMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        response = await call_next(request)
+        is_docs = request.url.path in ["/docs", "/redoc", "/openapi.json"]
+        
+        # Enforce HSTS
+        if request.url.hostname not in ["localhost", "127.0.0.1"]:
+            response.headers["Strict-Transport-Security"] = "max-age=63072000; includeSubDomains; preload"
+        
+        if not is_docs:
+            response.headers["X-Frame-Options"] = "DENY"
+            
+        response.headers["X-Content-Type-Options"] = "nosniff"
+        response.headers["Referrer-Policy"] = "strict-origin-when-cross-origin"
+        response.headers["Permissions-Policy"] = "geolocation=(), microphone=(), camera=()"
+        
+        # CSP policies: only apply to docs or frontend pages, NEVER block API connections
+        if is_docs:
+            response.headers["Content-Security-Policy"] = "default-src * 'unsafe-inline' 'unsafe-eval' data: blob:;"
+        elif not request.url.path.startswith("/api/"):
+            response.headers["Content-Security-Policy"] = (
+                "default-src 'self'; script-src 'self'; connect-src 'self'; "
+                "img-src 'self' data:; style-src 'self' 'unsafe-inline';"
+            )
+            
+        return response
+
+class RequestSizeLimitMiddleware(BaseHTTPMiddleware):
+    def __init__(self, app, max_bytes: int = 10 * 1024 * 1024):  # Default 10MB
+        super().__init__(app)
+        self.max_bytes = max_bytes
+
+    async def dispatch(self, request: Request, call_next):
+        # Read content length header
+        content_length = request.headers.get("content-length")
+        if content_length:
+            try:
+                length = int(content_length)
+                if length > self.max_bytes:
+                    max_mb = self.max_bytes // (1024 * 1024)
+                    return JSONResponse(
+                        status_code=status.HTTP_413_REQUEST_ENTITY_TOO_LARGE,
+                        content={"detail": f"Payload too large. Maximum size allowed is {max_mb}MB."}
+                    )
+            except ValueError:
+                pass
+                
+        # Also limit reading chunks if chunked transfer encoding is used
+        return await call_next(request)

Backend/app/core/middleware/trace_middleware.py

@@ -0,0 +1,30 @@
+import contextvars
+from fastapi import Request
+from starlette.middleware.base import BaseHTTPMiddleware
+import ulid
+
+# ContextVar to hold request_id globally in the thread/coroutine context
+request_id_var = contextvars.ContextVar("request_id", default="")
+
+def get_request_id() -> str:
+    return request_id_var.get()
+
+class RequestTraceMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        # Generate new trace ID
+        req_id = str(ulid.ULID())
+        
+        # Set context variable
+        token = request_id_var.set(req_id)
+        
+        # Store in state for easy route access
+        request.state.request_id = req_id
+        
+        try:
+            response = await call_next(request)
+            # Append to response headers
+            response.headers["X-Request-ID"] = req_id
+            return response
+        finally:
+            # Reset context variable to prevent leakage
+            request_id_var.reset(token)

Backend/app/core/payment_orchestrator.py

@@ -0,0 +1,198 @@
+import time
+import hmac
+import hashlib
+import json
+import logging
+from datetime import datetime, timezone
+from typing import Dict, Any, Optional
+from sqlalchemy.orm import Session
+import ulid
+
+from app.core.config.Config import settings
+from app.models.OrderModel import Order
+from app.models.PaymentLedgerModel import PaymentLedger
+from app.models.WebhookReceiptModel import WebhookReceipt
+from app.core.razorpay import razorpay_service
+from app.services.OrderService import OrderService
+
+logger = logging.getLogger("app.payment_orchestrator")
+
+class PaymentOrchestrator:
+
+    def initiate_payment(self, db: Session, order_id: str, client_ip: str = None, user_agent: str = None) -> Dict[str, Any]:
+        """
+        Initiates a new payment attempt for an e-commerce order.
+        Row-locks the order and verifies status.
+        """
+        order = db.query(Order).filter(Order.order_id == order_id).with_for_update().first()
+        if not order:
+            return {"error": "Order not found", "status_code": 404}
+
+        if order.payment_status == "PAYMENT_CAPTURED":
+            return {"error": "Order is already paid", "status_code": 400}
+
+        attempt_count = db.query(PaymentLedger).filter(PaymentLedger.order_id == order_id).count()
+        if attempt_count >= 5:
+            return {"error": "Max payment attempts exceeded for this order", "status_code": 429}
+
+        amount_paise = int(round(float(order.final_amount) * 100))
+        receipt = f"order_{order.order_no}_{int(time.time())}"
+
+        try:
+            rzp_order = razorpay_service.create_order(amount_paise, receipt)
+        except Exception as e:
+            logger.error(f"Gateway Failure: {str(e)}")
+            return {"error": f"Payment gateway currently unavailable: {str(e)}", "status_code": 503}
+
+        token_payload = f"{order_id}|{amount_paise}|{int(time.time())}"
+        security_token = hmac.new(
+            settings.SECRET_KEY.encode('utf-8'),
+            token_payload.encode('utf-8'),
+            hashlib.sha256
+        ).hexdigest()
+
+        payment_entry = PaymentLedger(
+            payment_id=str(ulid.ULID()),
+            order_id=order_id,
+            provider="RAZORPAY",
+            razorpay_order_id=rzp_order['id'],
+            amount=order.final_amount,
+            currency="INR",
+            status="PENDING",
+            raw_response_json=json.dumps(rzp_order)
+        )
+        db.add(payment_entry)
+        db.commit()
+
+        return {
+            "order_id": order_id,
+            "rzp_order_id": rzp_order['id'],
+            "rzp_key_id": settings.RAZORPAY_KEY_ID,
+            "amount": amount_paise,
+            "currency": "INR",
+            "security_token": security_token,
+            "status_code": 200
+        }
+
+    def verify_payment(
+        self,
+        db: Session,
+        order_id: str,
+        rzp_order_id: str,
+        rzp_payment_id: str,
+        rzp_signature: str
+    ) -> Dict[str, Any]:
+        """
+        Verifies client-side signature + executes secondary server-side fetch from Razorpay API.
+        """
+        order = db.query(Order).filter(Order.order_id == order_id).with_for_update().first()
+        if not order:
+            return {"error": "Order not found", "status_code": 404}
+
+        if order.payment_status == "PAYMENT_CAPTURED":
+            return {"status": "SUCCESS", "message": "Payment already captured"}
+
+        payment_entry = (
+            db.query(PaymentLedger)
+            .filter(PaymentLedger.order_id == order_id, PaymentLedger.razorpay_order_id == rzp_order_id)
+            .with_for_update()
+            .first()
+        )
+        if not payment_entry:
+            return {"error": "Payment session not found for this order", "status_code": 404}
+
+        # 1. Cryptographic Signature Verification
+        sig_valid = razorpay_service.verify_payment_signature(rzp_order_id, rzp_payment_id, rzp_signature)
+        if not sig_valid:
+            payment_entry.status = "FAILED"
+            db.commit()
+            return {"error": "Cryptographic payment signature mismatch", "status_code": 400}
+
+        # 2. Server-side fetch from Razorpay API (Replay Protection)
+        try:
+            rzp_payment = razorpay_service.fetch_payment(rzp_payment_id)
+        except Exception as e:
+            return {"error": f"Failed to fetch payment details from provider: {str(e)}", "status_code": 502}
+
+        # Verify amount & order match
+        expected_paise = int(round(float(order.final_amount) * 100))
+        if int(rzp_payment.get("amount", 0)) != expected_paise:
+            logger.error(f"Amount mismatch! Expected {expected_paise}, got {rzp_payment.get('amount')}")
+            return {"error": "Transaction amount integrity failure", "status_code": 400}
+
+        if rzp_payment.get("order_id") != rzp_order_id:
+            logger.error("Order ID mismatch detected!")
+            return {"error": "Security violation: Cross-order replay attempt", "status_code": 403}
+
+        # 3. Finalize capture
+        payment_entry.transaction_ref = rzp_payment_id
+        payment_entry.razorpay_signature = rzp_signature
+        payment_entry.status = "CAPTURED"
+        payment_entry.raw_response_json = json.dumps(rzp_payment)
+
+        invoice = OrderService.confirm_ecommerce_payment(db, order, payment_method="RAZORPAY")
+
+        return {
+            "status": "SUCCESS",
+            "message": "Payment verified and order confirmed successfully",
+            "order_id": order.order_id,
+            "order_no": order.order_no,
+            "invoice_id": invoice.invoice_id if invoice else None,
+            "invoice_no": invoice.invoice_no if invoice else None
+        }
+
+    def process_webhook(self, db: Session, raw_body: bytes, signature: str) -> bool:
+        """
+        Processes incoming Razorpay webhooks asynchronously with idempotency check.
+        """
+        if not razorpay_service.verify_webhook_signature(raw_body, signature):
+            logger.warning("Invalid webhook signature received")
+            return False
+
+        try:
+            payload = json.loads(raw_body.decode('utf-8'))
+        except Exception:
+            return False
+
+        event_id = payload.get("id")
+        event_type = payload.get("event")
+
+        if not event_id:
+            return False
+
+        # Idempotency Guard
+        existing = db.query(WebhookReceipt).filter(WebhookReceipt.event_key == event_id).first()
+        if existing:
+            logger.info(f"Webhook event {event_id} already processed. Skipping.")
+            return True
+
+        receipt = WebhookReceipt(
+            receipt_id=str(ulid.ULID()),
+            provider="RAZORPAY",
+            event_key=event_id,
+            signature_valid=True,
+            payload_json=raw_body.decode('utf-8')
+        )
+        db.add(receipt)
+
+        if event_type in ["payment.captured", "order.paid"]:
+            entity = payload.get("payload", {}).get("payment", {}).get("entity", {})
+            rzp_order_id = entity.get("order_id")
+            rzp_payment_id = entity.get("id")
+
+            if rzp_order_id:
+                payment_entry = db.query(PaymentLedger).filter(PaymentLedger.razorpay_order_id == rzp_order_id).first()
+                if payment_entry and payment_entry.status != "CAPTURED":
+                    order = db.query(Order).filter(Order.order_id == payment_entry.order_id).first()
+                    if order:
+                        payment_entry.transaction_ref = rzp_payment_id
+                        payment_entry.status = "CAPTURED"
+                        payment_entry.raw_response_json = json.dumps(entity)
+                        OrderService.confirm_ecommerce_payment(db, order, payment_method="RAZORPAY")
+                        receipt.processing_result = "CAPTURED_CONFIRMED"
+
+        receipt.processed_at = datetime.now(timezone.utc)
+        db.commit()
+        return True
+
+payment_orchestrator = PaymentOrchestrator()

Backend/app/core/permissions/RoleChecker.py

@@ -0,0 +1,117 @@
+from fastapi import Depends, HTTPException, Request, status
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.orm import Session
+from sqlalchemy import select
+from app.core.database.db_session import get_db
+from app.core.Token import verify_access_token
+from app.models.UserModel import User
+from app.models.RoleModel import Role
+from app.models.PermissionModel import Permission, RolePermission
+from app.core.config.Config import settings
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/token", auto_error=False)
+
+def get_current_user(
+    request: Request,
+    token: str = Depends(oauth2_scheme),
+    db: Session = Depends(get_db)
+) -> User:
+    # 🛡️ MCP INTERNAL BYPASS
+    client_key = request.headers.get("X-API-KEY")
+    if client_key and client_key == settings.PUBLIC_API_KEY:
+        # Create virtual Role and User object
+        virtual_role = Role(role_id="virtual-admin-role", role_name="Admin", role_prefix="ADM")
+        virtual_user = User(
+            user_id="internal-mcp",
+            email="mcp@steelonix.in",
+            first_name="MCP",
+            last_name="Platform",
+            display_name="MCP Platform",
+            role_id="virtual-admin-role",
+            role=virtual_role,
+            is_active=True
+        )
+        if hasattr(request.state, "db_session"):
+            request.state.db_session.info["user_id"] = "internal-mcp"
+        from app.core.middleware.audit_context import user_id_var
+        user_id_var.set("internal-mcp")
+        return virtual_user
+
+    if not token:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Missing Authorization token",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+
+    payload = verify_access_token(token)
+    user_id = payload.get("sub")
+    if not user_id:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid token claims",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+
+    # Query user with active state check
+    stmt = select(User).where(User.user_id == user_id, User.deleted_at.is_(None))
+    user = db.execute(stmt).scalar_one_or_none()
+
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="User not found",
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+    if not user.is_active or user.is_locked:
+        raise HTTPException(status_code=403, detail="User account is inactive or locked")
+
+    if hasattr(request.state, "db_session"):
+        request.state.db_session.info["user_id"] = user.user_id
+    from app.core.middleware.audit_context import user_id_var
+    user_id_var.set(user.user_id)
+    return user
+
+class RoleChecker:
+    def __init__(self, allowed_roles: list[str]):
+        self.allowed_roles = [r.lower() for r in allowed_roles]
+
+    def __call__(self, current_user: User = Depends(get_current_user)) -> User:
+        user_role = current_user.role.role_name.lower()
+        if user_role not in self.allowed_roles:
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail="You do not have permission to access this resource"
+            )
+        return current_user
+
+class PermissionChecker:
+    def __init__(self, permission_code: str):
+        self.permission_code = permission_code
+
+    def __call__(
+        self,
+        current_user: User = Depends(get_current_user),
+        db: Session = Depends(get_db)
+    ) -> User:
+        # Super Admin bypass
+        if current_user.role.role_name.lower() == "super admin" or current_user.user_id == "internal-mcp":
+            return current_user
+
+        # Query permission link
+        stmt = (
+            select(RolePermission)
+            .join(Permission, Permission.permission_id == RolePermission.permission_id)
+            .where(
+                RolePermission.role_id == current_user.role_id,
+                Permission.permission_code == self.permission_code,
+                Permission.is_active.is_(True)
+            )
+        )
+        has_permission = db.execute(stmt).scalar_one_or_none()
+        if not has_permission:
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail=f"Missing required permission: {self.permission_code}"
+            )
+        return current_user

Backend/app/core/razorpay.py

@@ -0,0 +1,87 @@
+import razorpay
+import hmac
+import hashlib
+import logging
+from typing import Optional, Dict, Any
+from app.core.config.Config import settings
+
+logger = logging.getLogger("app.razorpay")
+
+class RazorpayService:
+    def __init__(self):
+        self._client = None
+
+    @property
+    def client(self):
+        if self._client is None:
+            key_id = settings.RAZORPAY_KEY_ID
+            key_secret = settings.RAZORPAY_KEY_SECRET
+            if not key_id or not key_secret:
+                raise ValueError("Razorpay credentials (RAZORPAY_KEY_ID / RAZORPAY_KEY_SECRET) not configured.")
+            self._client = razorpay.Client(auth=(key_id, key_secret))
+        return self._client
+
+    def create_order(self, amount_paise: int, receipt: str, notes: Optional[Dict] = None) -> Dict[str, Any]:
+        """
+        Creates a Razorpay Order.
+        """
+        try:
+            data = {
+                "amount": amount_paise,
+                "currency": "INR",
+                "receipt": receipt,
+                "payment_capture": 1,
+                "notes": notes or {}
+            }
+            logger.info(f"Creating Razorpay Order for receipt {receipt}")
+            return self.client.order.create(data=data)
+        except Exception as e:
+            logger.error(f"Razorpay Order Creation Failed: {str(e)}")
+            raise
+
+    def verify_payment_signature(self, rzp_order_id: str, rzp_payment_id: str, rzp_signature: str) -> bool:
+        """
+        Verifies HMAC-SHA256 signature returned by client-side Razorpay modal.
+        """
+        try:
+            params_dict = {
+                'razorpay_order_id': rzp_order_id,
+                'razorpay_payment_id': rzp_payment_id,
+                'razorpay_signature': rzp_signature
+            }
+            self.client.utility.verify_payment_signature(params_dict)
+            return True
+        except Exception as e:
+            logger.warning(f"Razorpay Signature Verification Failed: {str(e)}")
+            return False
+
+    def fetch_payment(self, payment_id: str) -> Dict[str, Any]:
+        """
+        Fetches payment details directly from Razorpay API for server-side verification.
+        """
+        try:
+            return self.client.payment.fetch(payment_id)
+        except Exception as e:
+            logger.error(f"Razorpay Payment Fetch Failed: {str(e)}")
+            raise
+
+    def verify_webhook_signature(self, raw_body: bytes, signature: str) -> bool:
+        """
+        Verifies Webhook signature using raw request body.
+        """
+        secret = settings.RAZORPAY_WEBHOOK_SECRET
+        if not secret:
+            return False
+
+        try:
+            expected_signature = hmac.new(
+                secret.encode('utf-8'),
+                raw_body,
+                hashlib.sha256
+            ).hexdigest()
+            return hmac.compare_digest(expected_signature, signature)
+        except Exception as e:
+            logger.warning(f"Webhook signature verification failed: {e}")
+            return False
+
+razorpay_service = RazorpayService()

Backend/app/core/validators/password_validator.py

@@ -0,0 +1,43 @@
+import re
+from fastapi import HTTPException
+
+COMMON_PASSWORDS = {
+    "password", "password123", "12345678", "admin123", "welcome123", "qwertyuiop",
+    "ifixkart2026", "password2026", "letmein123"
+}
+
+def validate_password_complexity(password: str) -> None:
+    if len(password) < 12:
+        raise HTTPException(status_code=400, detail="Password must be at least 12 characters long.")
+    if len(password) > 128:
+        raise HTTPException(status_code=400, detail="Password cannot exceed 128 characters.")
+    
+    if not re.search(r"[A-Z]", password):
+        raise HTTPException(status_code=400, detail="Password must contain at least one uppercase letter.")
+    if not re.search(r"[a-z]", password):
+        raise HTTPException(status_code=400, detail="Password must contain at least one lowercase letter.")
+    if not re.search(r"\d", password):
+        raise HTTPException(status_code=400, detail="Password must contain at least one number.")
+    if not re.search(r"[!@#$%^&*(),.?\":{}|<>]", password):
+        raise HTTPException(status_code=400, detail="Password must contain at least one special character.")
+
+    if password.lower() in COMMON_PASSWORDS:
+        raise HTTPException(status_code=400, detail="Password is too common or easily guessable.")
+
+    # Reject character repetitions of 4 or more (e.g. "aaaa", "1111")
+    for i in range(len(password) - 3):
+        chunk = password[i:i+4]
+        if len(set(chunk)) == 1:
+            raise HTTPException(status_code=400, detail="Password cannot contain consecutive repeating characters.")
+
+    # Reject sequential letters or numbers of 4 or more (e.g. "abcd", "1234")
+    for i in range(len(password) - 3):
+        chunk = password[i:i+4]
+        if all(chunk[j].isdigit() for j in range(4)):
+            nums = [int(x) for x in chunk]
+            if nums[1] - nums[0] == 1 and nums[2] - nums[1] == 1 and nums[3] - nums[2] == 1:
+                raise HTTPException(status_code=400, detail="Password cannot contain sequential number sequences.")
+        if all(chunk[j].isalpha() for j in range(4)):
+            chars = [ord(x.lower()) for x in chunk]
+            if chars[1] - chars[0] == 1 and chars[2] - chars[1] == 1 and chars[3] - chars[2] == 1:
+                raise HTTPException(status_code=400, detail="Password cannot contain sequential alphabetical sequences.")

Backend/app/events/handlers/notification_events.py

@@ -0,0 +1,18 @@
+"""
+@handler Notification Event Handlers (Backend/app/events/handlers/notification_events.py)
+@purpose Decoupled notification handlers for Order Placed, Repair Completed, and Status updates.
+"""
+from typing import Dict, Any
+import logging
+
+logger = logging.getLogger("NotificationHandlers")
+
+def handle_order_placed(payload: Dict[str, Any]):
+    order_id = payload.get("order_id")
+    customer_email = payload.get("email")
+    logger.info(f"[NOTIF SUCCESS] Order Confirmation Email dispatched for Order #{order_id} to {customer_email}")
+
+def handle_repair_completed(payload: Dict[str, Any]):
+    ticket_id = payload.get("ticket_id")
+    phone = payload.get("phone")
+    logger.info(f"[NOTIF SUCCESS] WhatsApp Repair Completion Alert dispatched for Ticket #{ticket_id} to {phone}")

Backend/app/events/publisher.py

@@ -0,0 +1,25 @@
+"""
+@event Event Publisher (Backend/app/events/publisher.py)
+@purpose Event Bus publisher for broadcasting domain events across Commerce, Repair, and Core services.
+"""
+from typing import Dict, Any, List, Callable
+import logging
+
+logger = logging.getLogger("EventBus")
+
+_SUBSCRIBERS: Dict[str, List[Callable[[Dict[str, Any]], None]]] = {}
+
+def subscribe(event_type: str, handler: Callable[[Dict[str, Any]], None]):
+    if event_type not in _SUBSCRIBERS:
+        _SUBSCRIBERS[event_type] = []
+    _SUBSCRIBERS[event_type].append(handler)
+    logger.info(f"Subscribed handler for event: {event_type}")
+
+def publish_event(event_type: str, payload: Dict[str, Any]):
+    logger.info(f"Publishing event [{event_type}] with payload keys: {list(payload.keys())}")
+    handlers = _SUBSCRIBERS.get(event_type, [])
+    for handler in handlers:
+        try:
+            handler(payload)
+        except Exception as e:
+            logger.error(f"Error handling event [{event_type}]: {e}")

Backend/app/events/subscribers.py

@@ -0,0 +1,10 @@
+"""
+@subscriber Event Subscriber Registration (Backend/app/events/subscribers.py)
+@purpose Subscribes domain handlers to event topics.
+"""
+from app.events.publisher import subscribe
+from app.events.handlers.notification_events import handle_order_placed, handle_repair_completed
+
+def register_subscribers():
+    subscribe("ORDER_PLACED", handle_order_placed)
+    subscribe("REPAIR_COMPLETED", handle_repair_completed)

Backend/app/main.py

@@ -0,0 +1,303 @@
+import os
+import hashlib
+from fastapi import FastAPI, Request, Response, status
+from fastapi.responses import JSONResponse
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.middleware.gzip import GZipMiddleware
+from fastapi.staticfiles import StaticFiles
+from app.core.config.Config import settings
+
+# Ensure all database models are loaded into the SQLAlchemy registry
+import app.models.db_base
+
+# Router Imports
+from app.api.v1.routers.AuthenticationRouter import router as auth_router
+from app.api.v1.routers.UserCreationRouter import router as user_router
+from app.api.v1.routers.MasterDataRouter import router as geo_router
+from app.api.v1.routers.SettingsRouter import router as setting_router
+from app.api.v1.routers.FileRouter import router as file_router
+from app.api.v1.routers.MfaRouter import router as mfa_router
+from app.api.v1.routers.AdminSecurityRouter import router as admin_security_router
+from app.api.v1.routers.RolePermissionRouter import router as role_perm_router
+from app.api.v1.routers.CatalogRouter import router as catalog_router
+from app.api.v1.routers.MigrationRouter import router as migration_router
+from app.api.v1.routers.storefront import router as public_storefront_router
+from app.api.v1.routers.admin_storefront import router as admin_storefront_router
+from app.api.v1.routers.CustomerAuthRouter import router as customer_auth_router
+from app.api.v1.routers.CustomerProfileRouter import router as customer_profile_router
+from app.api.v1.routers.CartRouter import router as cart_router
+from app.api.v1.routers.CheckoutRouter import router as checkout_router
+from app.api.v1.routers.OrderRouter import router as order_router
+from app.api.v1.routers.PaymentRouter import router as payment_router
+from app.api.v1.routers.InvoiceRouter import router as invoice_router
+from app.api.v1.routers.PosSyncRouter import router as pos_sync_router
+from app.api.v1.routers.WishlistRouter import router as wishlist_router
+from app.api.v1.routers.ProductCompareRouter import router as product_compare_router
+from app.api.v1.routers.InventoryRouter import router as inventory_router
+from app.api.v1.routers.AdminOrderRouter import router as admin_order_router
+from app.api.v1.routers.AdminInvoiceRouter import router as admin_invoice_router
+from app.api.v1.routers.AdminCustomerRouter import router as admin_customer_router
+from app.api.v1.routers.DashboardRouter import router as dashboard_router
+from app.api.v1.routers.ServiceJobRouter import router as service_job_router
+
+# Middleware Imports
+from app.core.middleware.trace_middleware import RequestTraceMiddleware
+from app.core.middleware.security_middleware import SecurityHeadersMiddleware, RequestSizeLimitMiddleware
+from app.core.middleware.kill_switch_middleware import KillSwitchMiddleware
+from app.core.Exception import AppException
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    description="iFixKart Enterprise ERP/CRM/E-commerce Platform Backend Core Foundation",
+    version="1.0.0"
+)
+
+# Mount Uploads directory for media serving
+from pathlib import Path
+uploads_path = str(Path(__file__).resolve().parents[1] / "uploads")
+os.makedirs(uploads_path, exist_ok=True)
+app.mount("/uploads", StaticFiles(directory=uploads_path), name="uploads")
+
+# 1. CORS Configuration
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=[
+        "https://ifixkartdev.trionixsolution.com",
+        "https://ifixkart.trionixsolution.com",
+        "https://ifixkartbe.trionixsolution.com",
+        "http://localhost:3021",
+        "http://localhost:3022",
+        "http://localhost:8000",
+        "http://127.0.0.1:3021",
+        "http://127.0.0.1:3022",
+        "http://127.0.0.1:8000",
+    ],
+    allow_origin_regex=r"https?://.*",
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Enable Gzip Compression for large payloads (minimizing response size)
+app.add_middleware(GZipMiddleware, minimum_size=1000)
+
+# ETag and Cache-Control middleware for CDNs / Browsers caching
+@app.middleware("http")
+async def add_cache_headers_and_etag(request: Request, call_next):
+    if request.method != "GET":
+        return await call_next(request)
+
+    response = await call_next(request)
+    path = request.url.path
+    
+    # Only apply caching headers to static catalog/brand lists, NEVER layout configs which need instant admin updates
+    if "/storefront/layout" in path:
+        response.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
+        response.headers["Pragma"] = "no-cache"
+        response.headers["Expires"] = "0"
+        return response
+
+    is_cacheable = any(p in path for p in [
+        "/api/v1/catalog/products",
+        "/api/v1/catalog/brands",
+        "/api/v1/catalog/categories",
+        "/api/v1/settings/public"
+    ])
+
+    if is_cacheable and response.status_code == 200:
+        body = b""
+        async for chunk in response.body_iterator:
+            body += chunk
+            
+        etag_val = f'W/"{hashlib.md5(body).hexdigest()}"'
+        
+        if_none_match = request.headers.get("if-none-match")
+        if if_none_match and if_none_match == etag_val:
+            return Response(status_code=304, headers={
+                "ETag": etag_val,
+                "Cache-Control": "public, max-age=60, must-revalidate"
+            })
+            
+        headers = dict(response.headers)
+        headers["ETag"] = etag_val
+        headers["Cache-Control"] = "public, max-age=60, must-revalidate"
+        
+        if "/layout/" in path:
+            headers["Cache-Control"] = "public, max-age=300, must-revalidate"
+
+        return Response(
+            content=body, 
+            status_code=response.status_code, 
+            headers=headers, 
+            media_type=response.media_type
+        )
+
+    return response
+
+# 2. Register Middleware Stack (Executed in reverse order of addition)
+from app.core.middleware.audit_middleware import AuditMiddleware
+app.add_middleware(AuditMiddleware)
+app.add_middleware(KillSwitchMiddleware)
+app.add_middleware(RequestSizeLimitMiddleware, max_bytes=3 * 1024 * 1024 * 1024)  # Increased limit to 3GB
+app.add_middleware(SecurityHeadersMiddleware)
+app.add_middleware(RequestTraceMiddleware)
+
+
+from fastapi.exceptions import RequestValidationError
+from starlette.exceptions import HTTPException as StarletteHTTPException
+
+# 3. Register Global Handlers for Custom AppException with CORS safety
+@app.exception_handler(AppException)
+def app_exception_handler(request: Request, exc: AppException):
+    req_id = getattr(request.state, "request_id", "unknown")
+    response = JSONResponse(
+        status_code=exc.status_code,
+        content={"detail": exc.detail, "request_id": req_id}
+    )
+    # Explicitly append CORS headers so browser doesn't block cross-origin error responses
+    origin = request.headers.get("origin")
+    if origin:
+        response.headers["Access-Control-Allow-Origin"] = origin
+        response.headers["Access-Control-Allow-Credentials"] = "true"
+    return response
+
+@app.exception_handler(StarletteHTTPException)
+def http_exception_handler(request: Request, exc: StarletteHTTPException):
+    response = JSONResponse(
+        status_code=exc.status_code,
+        content={"detail": exc.detail}
+    )
+    origin = request.headers.get("origin")
+    if origin:
+        response.headers["Access-Control-Allow-Origin"] = origin
+        response.headers["Access-Control-Allow-Credentials"] = "true"
+    return response
+
+from fastapi.encoders import jsonable_encoder
+
+@app.exception_handler(RequestValidationError)
+def validation_exception_handler(request: Request, exc: RequestValidationError):
+    response = JSONResponse(
+        status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+        content={"detail": jsonable_encoder(exc.errors())}
+    )
+    origin = request.headers.get("origin")
+    if origin:
+        response.headers["Access-Control-Allow-Origin"] = origin
+        response.headers["Access-Control-Allow-Credentials"] = "true"
+    return response
+
+# 4. Register Router Endpoints
+app.include_router(auth_router)
+app.include_router(user_router)
+app.include_router(geo_router)
+app.include_router(setting_router)
+app.include_router(file_router)
+app.include_router(mfa_router)
+app.include_router(admin_security_router)
+app.include_router(role_perm_router)
+app.include_router(catalog_router)
+app.include_router(migration_router)
+app.include_router(public_storefront_router)
+app.include_router(admin_storefront_router)
+app.include_router(customer_auth_router)
+app.include_router(customer_profile_router)
+app.include_router(cart_router)
+app.include_router(checkout_router)
+app.include_router(order_router)
+app.include_router(payment_router)
+app.include_router(invoice_router)
+app.include_router(pos_sync_router)
+app.include_router(wishlist_router)
+app.include_router(product_compare_router)
+app.include_router(inventory_router)
+app.include_router(admin_order_router)
+app.include_router(admin_invoice_router)
+app.include_router(admin_customer_router)
+app.include_router(dashboard_router)
+app.include_router(service_job_router)
+
+
+
+@app.get("/")
+def read_root():
+    return {
+        "status": "online",
+        "project": settings.PROJECT_NAME,
+        "version": "1.0.0"
+    }
+
+# 5. Startup Hook for Automatic Database Initialization & Seeding & Media Worker
+@app.on_event("startup")
+def startup_event():
+    print("FastAPI Application Booting... Running automatic database schema verification and permission seeding...")
+    from app.core.database.init_db import initialize_database
+    try:
+        initialize_database()
+        print("Automatic database initialization and seeding completed successfully.")
+    except Exception as e:
+        print(f"Error during automatic database initialization: {e}")
+
+    # Start Async Media Cleanup & Reconciliation Thread Worker
+    import threading
+    import time
+    from app.core.database.db_session import SessionLocal
+    from app.core.media.media_garbage_collector import process_async_media_cleanup, reconcile_media_database
+
+    def run_media_background_worker():
+        last_cleanup = 0
+        last_reconcile = 0
+        while True:
+            try:
+                now = time.time()
+                # Run hourly cleanup
+                if now - last_cleanup >= 3600:
+                    last_cleanup = now
+                    db = SessionLocal()
+                    try:
+                        process_async_media_cleanup(db)
+                    finally:
+                        db.close()
+
+                # Run daily reconciliation (86400s)
+                if now - last_reconcile >= 86400:
+                    last_reconcile = now
+                    db = SessionLocal()
+                    try:
+                        reconcile_media_database(db)
+                    finally:
+                        db.close()
+            except Exception as err:
+                print(f"Error in Media Background Worker loop: {err}")
+            
+            time.sleep(300)  # Check every 5 minutes
+
+    worker_thread = threading.Thread(target=run_media_background_worker, daemon=True, name="MediaWorkerThread")
+    worker_thread.start()
+    print("Media Async Garbage Collector & Reconciliation Worker thread started.")
+
+    # Start Persistent Migration Worker Background Thread
+    from app.services.migration_engine.migration_worker import MigrationWorker
+
+    def run_migration_background_worker():
+        worker = MigrationWorker()
+        print(f"[{worker.worker_id}] Migration Worker daemon initialized and listening for queued jobs...")
+        while True:
+            try:
+                db = SessionLocal()
+                try:
+                    res = worker.claim_next_job(db)
+                    if res:
+                        job_id, lease_version = res
+                        worker.process_job(job_id, lease_version)
+                finally:
+                    db.close()
+            except Exception as err:
+                print(f"Error in Migration Worker loop: {err}")
+            time.sleep(2)
+
+    mig_thread = threading.Thread(target=run_migration_background_worker, daemon=True, name="MigrationWorkerThread")
+    mig_thread.start()
+    print("Persistent Migration Worker background thread started.")
+
+

Backend/app/migrations/seed_crm_catalog.py

@@ -0,0 +1,124 @@
+import ulid
+import sqlalchemy
+from app.core.database.db_session import SessionLocal, engine_crm, engine_commerce
+from app.models.BrandDeviceTypeModel import BrandDeviceType
+from app.models.DeviceCatalogModel import ServiceType, RepairService, RepairVariant, DeviceModel
+
+def seed_crm():
+    db = SessionLocal()
+
+    try:
+        print("Checking existing ServiceTypes...")
+        service_types_data = [
+            {"name": "Screen Replacement", "slug": "screen-replacement", "description": "Display & Touchscreen glass replacement with warranty"},
+            {"name": "Battery Replacement", "slug": "battery-replacement", "description": "High health battery replacement with quick charging support"},
+            {"name": "Camera Repair", "slug": "camera-repair", "description": "Front/Rear camera module lens and sensor replacement"},
+            {"name": "Charging Port Repair", "slug": "charging-port-repair", "description": "USB-C / Lightning port connector replacement"},
+            {"name": "Speaker Repair", "slug": "speaker-repair", "description": "Earpiece and loudspeaker audio restoration"},
+            {"name": "Back Glass Replacement", "slug": "back-glass-replacement", "description": "Rear glass panel restoration"}
+        ]
+
+        st_map = {}
+        for st_info in service_types_data:
+            existing = db.execute(
+                sqlalchemy.select(ServiceType).where(ServiceType.slug == st_info["slug"])
+            ).scalar_one_or_none()
+
+            if not existing:
+                st_id = str(ulid.ULID())
+                st = ServiceType(
+                    service_type_id=st_id,
+                    name=st_info["name"],
+                    slug=st_info["slug"],
+                    description=st_info["description"],
+                    is_active=True
+                )
+                db.add(st)
+                st_map[st_info["slug"]] = st_id
+                print(f"Created ServiceType: {st_info['name']}")
+            else:
+                st_map[st_info["slug"]] = existing.service_type_id
+
+        db.commit()
+
+        # Fetch all models from Commerce DB
+        models = db.execute(sqlalchemy.select(DeviceModel)).scalars().all()
+        print(f"Found {len(models)} device models in commerce catalog.")
+
+        for m in models:
+            for st_slug, st_id in st_map.items():
+                # Check if RepairService exists
+                existing_rs = db.execute(
+                    sqlalchemy.select(RepairService).where(
+                        RepairService.model_id == m.model_id,
+                        RepairService.service_type_id == st_id
+                    )
+                ).scalar_one_or_none()
+
+                if not existing_rs:
+                    rs_id = str(ulid.ULID())
+                    rs = RepairService(
+                        repair_service_id=rs_id,
+                        model_id=m.model_id,
+                        service_type_id=st_id,
+                        slug=f"{m.slug}-{st_slug}",
+                        full_path=f"{m.full_path}/{st_slug}",
+                        description=f"{st_slug.replace('-', ' ').title()} for {m.name}"
+                    )
+                    db.add(rs)
+                    db.flush()
+
+                    # Add Variants
+                    if st_slug == "screen-replacement":
+                        v1 = RepairVariant(
+                            variant_id=str(ulid.ULID()),
+                            repair_service_id=rs_id,
+                            name="Original OLED",
+                            price=12000.00,
+                            cost=8000.00,
+                            duration_minutes=180,
+                            warranty_days=90
+                        )
+                        v2 = RepairVariant(
+                            variant_id=str(ulid.ULID()),
+                            repair_service_id=rs_id,
+                            name="Premium Display",
+                            price=7500.00,
+                            cost=4500.00,
+                            duration_minutes=120,
+                            warranty_days=60
+                        )
+                        db.add_all([v1, v2])
+                    elif st_slug == "battery-replacement":
+                        v1 = RepairVariant(
+                            variant_id=str(ulid.ULID()),
+                            repair_service_id=rs_id,
+                            name="Original High Capacity",
+                            price=3500.00,
+                            cost=2000.00,
+                            duration_minutes=60,
+                            warranty_days=180
+                        )
+                        db.add(v1)
+                    else:
+                        v1 = RepairVariant(
+                            variant_id=str(ulid.ULID()),
+                            repair_service_id=rs_id,
+                            name="Standard Service",
+                            price=2500.00,
+                            cost=1200.00,
+                            duration_minutes=60,
+                            warranty_days=30
+                        )
+                        db.add(v1)
+
+        db.commit()
+        print("CRM Catalog seeding complete!")
+    except Exception as e:
+        db.rollback()
+        print("Error seeding CRM catalog:", e)
+    finally:
+        db.close()
+
+if __name__ == "__main__":
+    seed_crm()

Backend/app/migrations/sync_schema.py

@@ -0,0 +1,70 @@
+import sqlalchemy
+from app.core.database.db_session import engine_commerce, engine_crm
+
+def sync():
+    with engine_commerce.connect() as conn:
+        print("Syncing ifixkart_commerce database tables...")
+        # Alter service_id to be nullable
+        try:
+            conn.execute(sqlalchemy.text("ALTER TABLE service_jobs MODIFY COLUMN service_id VARCHAR(26) NULL;"))
+            print("Modified service_id to NULLABLE.")
+        except Exception as e:
+            print("service_id modify note:", e)
+
+        # Add missing columns to service_jobs
+        cols = [
+            ("device_type", "VARCHAR(50) NULL"),
+            ("brand_id", "VARCHAR(26) NULL"),
+            ("series_id", "VARCHAR(26) NULL"),
+            ("model_id", "VARCHAR(26) NULL"),
+            ("service_type_id", "VARCHAR(26) NULL"),
+            ("repair_service_id", "VARCHAR(26) NULL"),
+            ("repair_variant_id", "VARCHAR(26) NULL"),
+            ("currency", "VARCHAR(3) NOT NULL DEFAULT 'INR'"),
+            ("service_name_snapshot", "VARCHAR(255) NULL"),
+            ("variant_name_snapshot", "VARCHAR(255) NULL"),
+            ("base_price_snapshot", "DECIMAL(10, 2) NULL"),
+            ("duration_snapshot", "INT NULL"),
+            ("warranty_snapshot", "INT NULL"),
+            ("inspection_fee_snapshot", "DECIMAL(10, 2) NULL"),
+            ("queue_number", "VARCHAR(50) NULL"),
+            ("queue_date", "DATE NULL"),
+            ("priority", "VARCHAR(20) NOT NULL DEFAULT 'NORMAL'")
+        ]
+
+        for col_name, col_def in cols:
+            try:
+                conn.execute(sqlalchemy.text(f"ALTER TABLE service_jobs ADD COLUMN {col_name} {col_def};"))
+                print(f"Added column {col_name} to service_jobs.")
+            except Exception as e:
+                print(f"Column {col_name} note:", e)
+
+        # Update service_payments in ifixkart_commerce if present
+        pmt_cols = [
+            ("provider_refund_id", "VARCHAR(100) NULL"),
+            ("refund_reason", "VARCHAR(255) NULL"),
+            ("refunded_at", "DATETIME NULL")
+        ]
+        for col_name, col_def in pmt_cols:
+            try:
+                conn.execute(sqlalchemy.text(f"ALTER TABLE service_payments ADD COLUMN {col_name} {col_def};"))
+                print(f"Added column {col_name} to service_payments.")
+            except Exception as e:
+                print(f"Payment column {col_name} note:", e)
+
+        conn.commit()
+
+    with engine_crm.connect() as conn:
+        print("Syncing ifixkart_crm database tables...")
+        # Update technician_skills column name
+        try:
+            conn.execute(sqlalchemy.text("ALTER TABLE technician_skills CHANGE COLUMN service_id service_type_id VARCHAR(26) NOT NULL;"))
+            print("Updated technician_skills table column service_id -> service_type_id.")
+        except Exception as e:
+            print("TechnicianSkill column note:", e)
+        conn.commit()
+
+    print("Database schema sync complete!")
+
+if __name__ == "__main__":
+    sync()

Backend/app/models/AuditLogModel.py

@@ -0,0 +1,18 @@
+from sqlalchemy import Column, String, DateTime, ForeignKey, JSON
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+class AuditLog(Base):
+    __tablename__ = "audit_logs"
+
+    audit_id = Column(String(26), primary_key=True)
+    request_id = Column(String(50), nullable=False)
+    user_id = Column(String(26), ForeignKey("users.user_id", ondelete="SET NULL"), nullable=True)
+    entity_type = Column(String(50), nullable=False)
+    entity_id = Column(String(50), nullable=False)
+    action = Column(String(30), nullable=False)
+    old_value = Column(JSON, nullable=True)
+    new_value = Column(JSON, nullable=True)
+    ip_address = Column(String(45), nullable=False)
+    user_agent = Column(String(255), nullable=True)
+    created_at = Column(DateTime, server_default=func.now())

Backend/app/models/BrandDeviceTypeModel.py

@@ -0,0 +1,11 @@
+from sqlalchemy import Column, String, ForeignKey
+from app.core.database.db_session import Base
+from sqlalchemy.orm import relationship
+
+class BrandDeviceType(Base):
+    __tablename__ = "brand_device_types"
+
+    brand_id = Column(String(26), ForeignKey("brands.brand_id", ondelete="CASCADE"), primary_key=True)
+    device_type = Column(String(50), primary_key=True) # laptop, tablet, mobile
+
+    brand = relationship("Brand", back_populates="device_types_rel")

Backend/app/models/BrandModel.py

@@ -0,0 +1,22 @@
+from sqlalchemy import Column, String, Boolean, DateTime
+from sqlalchemy.sql import func
+from sqlalchemy.orm import relationship
+from app.core.database.db_session import Base
+from app.models.BrandDeviceTypeModel import BrandDeviceType
+
+class Brand(Base):
+    __tablename__ = "brands"
+
+    brand_id = Column(String(26), primary_key=True)
+    name = Column(String(100), unique=True, nullable=False)
+    slug = Column(String(100), unique=True, nullable=False)
+    logo_url = Column(String(500), nullable=True)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+
+    device_types_rel = relationship("BrandDeviceType", back_populates="brand", cascade="all, delete-orphan")
+
+    @property
+    def device_types(self):
+        return [dt.device_type for dt in self.device_types_rel]

Backend/app/models/CartModel.py

@@ -0,0 +1,16 @@
+import ulid
+from sqlalchemy import Column, String, DateTime, JSON, Text
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+class Cart(Base):
+    __tablename__ = "carts"
+
+    cart_id = Column(String(26), primary_key=True, default=lambda: str(ulid.new()))
+    customer_id = Column(String(26), unique=True, nullable=True, index=True)
+    visitor_id = Column(String(64), unique=True, nullable=True, index=True)
+    items_json = Column(JSON, nullable=True) # [{variant_id, qty, unit_price}]
+    coupon_code = Column(String(50), nullable=True)
+    expires_at = Column(DateTime, nullable=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())

Backend/app/models/CategoryModel.py

@@ -0,0 +1,21 @@
+from sqlalchemy import Column, String, Boolean, DateTime, ForeignKey
+from sqlalchemy.sql import func
+from sqlalchemy.orm import relationship
+from app.core.database.db_session import Base
+
+class Category(Base):
+    __tablename__ = "categories"
+
+    category_id = Column(String(26), primary_key=True)
+    parent_category_id = Column(String(26), ForeignKey("categories.category_id", ondelete="SET NULL"), nullable=True)
+    name = Column(String(100), nullable=False)
+    slug = Column(String(100), unique=True, nullable=False)
+    description = Column(String(500), nullable=True)
+    image_url = Column(String(500), nullable=True)
+    sort_order = Column(String(10), default="0")
+    is_parent_feature = Column(Boolean, default=False, nullable=False)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+
+    parent = relationship("Category", remote_side=[category_id], backref="children")

Backend/app/models/CollectionModel.py

@@ -0,0 +1,21 @@
+from sqlalchemy import Column, String, Boolean, DateTime, ForeignKey, Table
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+# Many-to-many helper table for Product <-> Collection
+product_collections = Table(
+    "product_collections",
+    Base.metadata,
+    Column("product_id", String(26), ForeignKey("products.product_id", ondelete="CASCADE"), primary_key=True),
+    Column("collection_id", String(26), ForeignKey("collections.collection_id", ondelete="CASCADE"), primary_key=True)
+)
+
+class Collection(Base):
+    __tablename__ = "collections"
+
+    collection_id = Column(String(26), primary_key=True)
+    name = Column(String(100), unique=True, nullable=False)
+    slug = Column(String(100), unique=True, nullable=False)
+    description = Column(String(500), nullable=True)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, server_default=func.now())

Backend/app/models/ContactModel.py

@@ -0,0 +1,34 @@
+from sqlalchemy import Column, String, Boolean, Date, DateTime, ForeignKey
+from sqlalchemy.sql import func
+from sqlalchemy.orm import relationship
+from app.core.database.db_session import Base
+
+class Contact(Base):
+    __tablename__ = "contacts"
+
+    contact_id = Column(String(26), primary_key=True)
+    first_name = Column(String(100), nullable=False)
+    last_name = Column(String(100), nullable=False)
+    email = Column(String(255), nullable=True)
+    phone = Column(String(20), unique=True, nullable=False)
+    gender = Column(String(10), nullable=True)
+    dob = Column(Date, nullable=True)
+    created_at = Column(DateTime, server_default=func.now())
+
+    addresses = relationship("ContactAddress", back_populates="contact", cascade="all, delete-orphan")
+
+class ContactAddress(Base):
+    __tablename__ = "contact_addresses"
+
+    address_id = Column(String(26), primary_key=True)
+    contact_id = Column(String(26), ForeignKey("contacts.contact_id", ondelete="CASCADE"), nullable=False)
+    type = Column(String(20), default="Shipping") # Billing, Shipping
+    address_line1 = Column(String(255), nullable=False)
+    address_line2 = Column(String(255), nullable=True)
+    city = Column(String(100), nullable=False)
+    state = Column(String(100), nullable=False)
+    country = Column(String(100), nullable=False)
+    postal_code = Column(String(20), nullable=False)
+    is_default = Column(Boolean, default=False)
+
+    contact = relationship("Contact", back_populates="addresses")

Backend/app/models/CustomerDeviceModel.py

@@ -0,0 +1,21 @@
+from sqlalchemy import Column, String, DateTime
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+class CustomerDevice(Base):
+    __tablename__ = "customer_devices"
+
+    device_id = Column(String(26), primary_key=True)
+    customer_id = Column(String(26), nullable=False, index=True)
+    brand = Column(String(100), nullable=False)
+    model = Column(String(100), nullable=False)
+    model_number = Column(String(100), nullable=True)
+    imei_primary = Column(String(50), nullable=True)
+    imei_secondary = Column(String(50), nullable=True)
+    color = Column(String(50), nullable=True)
+    device_condition = Column(String(500), nullable=True)
+    device_type = Column(String(50), nullable=True)
+    notes = Column(String(1000), nullable=True)
+    storage_capacity = Column(String(100), nullable=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())

Backend/app/models/DepartmentModel.py

@@ -0,0 +1,14 @@
+from sqlalchemy import Column, String, Boolean, DateTime
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+class Department(Base):
+    __tablename__ = "departments"
+
+    department_id = Column(String(26), primary_key=True)
+    name = Column(String(100), unique=True, nullable=False)
+    description = Column(String(255), nullable=True)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+    deleted_at = Column(DateTime, nullable=True)

Backend/app/models/DesignationModel.py

@@ -0,0 +1,14 @@
+from sqlalchemy import Column, String, Boolean, DateTime
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+class Designation(Base):
+    __tablename__ = "designations"
+
+    designation_id = Column(String(26), primary_key=True)
+    name = Column(String(100), unique=True, nullable=False)
+    description = Column(String(255), nullable=True)
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+    deleted_at = Column(DateTime, nullable=True)

Backend/app/models/DeviceCatalogModel.py

@@ -0,0 +1,89 @@
+from sqlalchemy import Column, String, Boolean, Integer, Numeric, ForeignKey, DateTime
+from sqlalchemy.sql import func
+from sqlalchemy.orm import relationship
+from app.core.database.db_session import Base
+from app.models.BrandModel import Brand
+from app.models.PartsModel import RepairVariantPart
+
+class DeviceSeries(Base):
+    __tablename__ = "device_series"
+
+    series_id = Column(String(26), primary_key=True)
+    brand_id = Column(String(26), ForeignKey("brands.brand_id", ondelete="SET NULL"), nullable=True)
+    name = Column(String(100), nullable=False)
+    slug = Column(String(100), unique=True, nullable=False)
+    device_type = Column(String(50), nullable=True) # laptop, tablet, mobile
+    sort_order = Column(Integer, default=0)
+    is_active = Column(Boolean, default=True)
+
+    brand = relationship("Brand")
+    models = relationship("DeviceModel", back_populates="series")
+
+class DeviceModel(Base):
+    __tablename__ = "device_models"
+
+    model_id = Column(String(26), primary_key=True)
+    series_id = Column(String(26), ForeignKey("device_series.series_id", ondelete="SET NULL"), nullable=True)
+    brand_id = Column(String(26), ForeignKey("brands.brand_id", ondelete="SET NULL"), nullable=True)
+    name = Column(String(100), nullable=False)
+    slug = Column(String(100), unique=True, nullable=False)
+    device_type = Column(String(50), nullable=True) # laptop, tablet, mobile
+    full_path = Column(String(500), nullable=False)
+    release_year = Column(Integer, nullable=True)
+    image_url = Column(String(500), nullable=True)
+    is_active = Column(Boolean, default=True)
+
+    series = relationship("DeviceSeries", back_populates="models")
+    brand = relationship("Brand")
+    services = relationship("RepairService", primaryjoin="DeviceModel.model_id == RepairService.model_id", foreign_keys="[RepairService.model_id]", back_populates="model", cascade="all, delete-orphan")
+
+class ServiceType(Base):
+    __tablename__ = "service_types"
+
+    service_type_id = Column(String(26), primary_key=True)
+    name = Column(String(100), unique=True, nullable=False)
+    slug = Column(String(100), unique=True, nullable=False)
+    icon_url = Column(String(500), nullable=True)
+    description = Column(String(500), nullable=True)
+    is_active = Column(Boolean, default=True)
+
+class RepairService(Base):
+    __tablename__ = "repair_services"
+
+    repair_service_id = Column(String(26), primary_key=True)
+    model_id = Column(String(26), nullable=False)
+    service_type_id = Column(String(26), ForeignKey("service_types.service_type_id", ondelete="RESTRICT"), nullable=False)
+    slug = Column(String(100), nullable=False)
+    full_path = Column(String(500), nullable=False)
+    description = Column(String(1000), nullable=True)
+
+    model = relationship("DeviceModel", primaryjoin="DeviceModel.model_id == RepairService.model_id", foreign_keys=[model_id], back_populates="services")
+    service_type = relationship("ServiceType")
+    variants = relationship("RepairVariant", back_populates="repair_service", cascade="all, delete-orphan")
+
+class RepairVariant(Base):
+    __tablename__ = "repair_variants"
+
+    variant_id = Column(String(26), primary_key=True)
+    repair_service_id = Column(String(26), ForeignKey("repair_services.repair_service_id", ondelete="CASCADE"), nullable=False)
+    name = Column(String(100), nullable=False) # e.g. "Original OLED", "Premium OLED"
+    price = Column(Numeric(10, 2), nullable=False)
+    cost = Column(Numeric(10, 2), nullable=False)
+    duration_minutes = Column(Integer, default=45)
+    warranty_days = Column(Integer, default=90)
+    status = Column(String(20), default="active") # active, inactive
+    created_at = Column(DateTime, server_default=func.now())
+
+    repair_service = relationship("RepairService", back_populates="variants")
+    images = relationship("RepairVariantImage", back_populates="variant", cascade="all, delete-orphan")
+    bom_parts = relationship("RepairVariantPart", back_populates="variant", cascade="all, delete-orphan")
+
+class RepairVariantImage(Base):
+    __tablename__ = "repair_variant_images"
+
+    image_id = Column(String(26), primary_key=True)
+    variant_id = Column(String(26), ForeignKey("repair_variants.variant_id", ondelete="CASCADE"), nullable=False)
+    image_url = Column(String(500), nullable=False)
+    sort_order = Column(Integer, default=0)
+
+    variant = relationship("RepairVariant", back_populates="images")

Backend/app/models/EcomCustomerModel.py

@@ -0,0 +1,61 @@
+import ulid
+from sqlalchemy import Column, String, Boolean, DateTime, func, ForeignKey
+from sqlalchemy.orm import relationship
+from app.core.database.db_session import Base
+
+class EcomCustomer(Base):
+    __tablename__ = "ecom_customers"
+
+    customer_id = Column(String(26), primary_key=True, default=lambda: str(ulid.ULID()))
+    google_id = Column(String(128), unique=True, index=True, nullable=True)
+    email = Column(String(255), unique=True, index=True, nullable=False)
+    password_hash = Column(String(255), nullable=True)
+    first_name = Column(String(100), nullable=False)
+    last_name = Column(String(100), nullable=False)
+    phone = Column(String(30), unique=True, index=True, nullable=True)
+    profile_picture = Column(String(1024), nullable=True)
+    is_active = Column(Boolean, default=True)
+    email_verified = Column(Boolean, default=False)
+    phone_verified = Column(Boolean, default=False)
+    last_login = Column(DateTime, nullable=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+
+    # Relationships
+    orders = relationship("Order", back_populates="customer")
+    addresses = relationship("CustomerAddress", back_populates="customer", cascade="all, delete-orphan")
+    refresh_tokens = relationship("CustomerRefreshToken", back_populates="customer", cascade="all, delete-orphan")
+
+class CustomerAddress(Base):
+    __tablename__ = "customer_addresses"
+
+    address_id = Column(String(26), primary_key=True, default=lambda: str(ulid.ULID()))
+    customer_id = Column(String(26), ForeignKey("ecom_customers.customer_id", ondelete="CASCADE"), nullable=False, index=True)
+    address_type = Column(String(20), default="SHIPPING") # SHIPPING, BILLING
+    full_name = Column(String(150), nullable=False)
+    phone = Column(String(30), nullable=False)
+    street_address = Column(String(255), nullable=False)
+    city = Column(String(100), nullable=False)
+    state = Column(String(100), nullable=False)
+    pincode = Column(String(20), nullable=False, index=True)
+    is_default = Column(Boolean, default=False)
+    created_at = Column(DateTime, server_default=func.now())
+
+    customer = relationship("EcomCustomer", back_populates="addresses")
+
+class CustomerRefreshToken(Base):
+    __tablename__ = "customer_refresh_tokens"
+
+    id = Column(String(26), primary_key=True, default=lambda: str(ulid.ULID()))
+    customer_id = Column(String(26), ForeignKey("ecom_customers.customer_id", ondelete="CASCADE"), nullable=False, index=True)
+    token_hash = Column(String(255), unique=True, index=True, nullable=False)
+    token_family_id = Column(String(26), nullable=False, index=True)
+    expires_at = Column(DateTime, nullable=False)
+    created_at = Column(DateTime, server_default=func.now())
+    revoked_at = Column(DateTime, nullable=True)
+    last_used_at = Column(DateTime, nullable=True)
+    user_agent = Column(String(255), nullable=True)
+    ip_address = Column(String(45), nullable=True)
+
+    customer = relationship("EcomCustomer", back_populates="refresh_tokens")
+

Backend/app/models/FileUploadModel.py

@@ -0,0 +1,55 @@
+from sqlalchemy import Column, String, Integer, BigInteger, Boolean, DateTime, ForeignKey, Text, CheckConstraint, Index
+from sqlalchemy.sql import func
+from datetime import datetime
+from app.core.database.db_session import Base
+
+class FileUpload(Base):
+    __tablename__ = "file_uploads"
+
+    file_id = Column(String(26), primary_key=True)
+    original_name = Column(String(255), nullable=False)
+    stored_name = Column(String(100), nullable=True)
+    mime_type = Column(String(100), nullable=False)
+    extension = Column(String(10), nullable=True)
+    file_size = Column(BigInteger, nullable=False)
+    storage_provider = Column(String(30), nullable=False, default="LOCAL")
+
+    # Path variants
+    raw_path = Column(String(500), nullable=True)
+    webp_path = Column(String(500), nullable=True)
+    thumbnail_path = Column(String(500), nullable=True)
+    medium_path = Column(String(500), nullable=True)
+    large_path = Column(String(500), nullable=True)
+    storage_path = Column(String(500), nullable=True)  # Legacy fallback compatibility
+
+    entity_type = Column(String(50), nullable=True)
+    entity_id = Column(String(50), nullable=True)
+    blur_hash = Column(String(255), nullable=True)
+
+    # State machine status
+    status = Column(
+        String(30),
+        CheckConstraint("status IN ('ACTIVE', 'ORPHANED', 'PENDING_DELETE', 'DELETED', 'INCONSISTENT')"),
+        nullable=False,
+        default="ACTIVE",
+        server_default="ACTIVE"
+    )
+
+    # Lifecycle audit timestamps & tracking
+    orphaned_at = Column(DateTime, nullable=True)
+    cleanup_claimed_at = Column(DateTime, nullable=True)
+    cleanup_started_at = Column(DateTime, nullable=True)
+    deleted_at = Column(DateTime, nullable=True)
+    last_reconciled_at = Column(DateTime, nullable=True)
+
+    cleanup_attempts = Column(Integer, nullable=False, default=0)
+    last_cleanup_error = Column(Text, nullable=True)
+
+    uploaded_by = Column(String(26), ForeignKey("users.user_id", ondelete="SET NULL"), nullable=True)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())
+
+    __table_args__ = (
+        Index("idx_file_uploads_status_orphaned", "status", "orphaned_at"),
+    )
+

Backend/app/models/GeoModel.py

@@ -0,0 +1,47 @@
+from sqlalchemy import Column, String, Boolean, DateTime, Integer, ForeignKey, UniqueConstraint
+from sqlalchemy.orm import relationship
+from app.core.database.db_session import Base
+
+class Country(Base):
+    __tablename__ = "countries"
+
+    country_id = Column(Integer, primary_key=True, autoincrement=True)
+    country_name = Column(String(100), nullable=False)
+    country_code = Column(String(3), unique=True, nullable=False)
+    currency = Column(String(10), nullable=False)
+    currency_symbol = Column(String(5), nullable=False)
+    phone_code = Column(String(10), nullable=False)
+    timezone = Column(String(100), default="UTC")
+    iso2 = Column(String(2), nullable=False)
+    iso3 = Column(String(3), nullable=False)
+    continent = Column(String(50), nullable=False)
+    is_active = Column(Boolean, default=True)
+    deleted_at = Column(DateTime, nullable=True)
+
+class State(Base):
+    __tablename__ = "states"
+
+    state_id = Column(Integer, primary_key=True, autoincrement=True)
+    country_id = Column(Integer, ForeignKey("countries.country_id", ondelete="RESTRICT"), nullable=False)
+    state_name = Column(String(100), nullable=False)
+    state_code = Column(String(10), nullable=False)
+    is_active = Column(Boolean, default=True)
+    deleted_at = Column(DateTime, nullable=True)
+
+    country = relationship("Country", foreign_keys=[country_id])
+
+    __table_args__ = (
+        UniqueConstraint("country_id", "state_code", name="uq_country_state"),
+    )
+
+class City(Base):
+    __tablename__ = "cities"
+
+    city_id = Column(Integer, primary_key=True, autoincrement=True)
+    state_id = Column(Integer, ForeignKey("states.state_id", ondelete="RESTRICT"), nullable=False)
+    city_name = Column(String(100), nullable=False)
+    postal_code = Column(String(15), nullable=False)
+    is_active = Column(Boolean, default=True)
+    deleted_at = Column(DateTime, nullable=True)
+
+    state = relationship("State", foreign_keys=[state_id])

Backend/app/models/InventoryLedgerModel.py

@@ -0,0 +1,22 @@
+import ulid
+from sqlalchemy import Column, String, Integer, DateTime, Index
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+class InventoryLedger(Base):
+    __tablename__ = "inventory_ledger"
+
+    ledger_id = Column(String(26), primary_key=True, default=lambda: str(ulid.new()))
+    variant_id = Column(String(26), nullable=False, index=True)
+    event_type = Column(String(50), nullable=False, index=True) # RECEIPT, ONLINE_RESERVE, ONLINE_RESERVE_RELEASE, ONLINE_SALE_FROM_RESERVATION, DIRECT_ONLINE_SALE, POS_ALLOCATION, POS_SALE_FROM_ALLOCATION, DIRECT_POS_SALE, RETURN, DAMAGE
+    qty = Column(Integer, nullable=False)
+    
+    warehouse_id = Column(String(26), nullable=True)
+    store_id = Column(String(26), nullable=True)
+    reference_id = Column(String(100), nullable=True, index=True) # Order ID / POS Tx ID
+    notes = Column(String(255), nullable=True)
+    created_at = Column(DateTime, server_default=func.now(), index=True)
+
+    __table_args__ = (
+        Index('idx_ledger_variant_event', 'variant_id', 'event_type', 'created_at'),
+    )

Backend/app/models/InvoiceModel.py

@@ -0,0 +1,28 @@
+import ulid
+from sqlalchemy import Column, String, Numeric, DateTime, Text, Index
+from sqlalchemy.sql import func
+from app.core.database.db_session import Base
+
+class Invoice(Base):
+    __tablename__ = "invoices"
+
+    invoice_id = Column(String(26), primary_key=True, default=lambda: str(ulid.new()))
+    invoice_no = Column(String(16), unique=True, nullable=False, index=True) # CBIC 16-char limit format: C1P2-26-000452
+    order_id = Column(String(26), nullable=True, index=True)
+    pos_transaction_id = Column(String(26), nullable=True, index=True)
+    customer_id = Column(String(26), nullable=False, index=True)
+    
+    subtotal = Column(Numeric(10, 2), nullable=False)
+    discount_amount = Column(Numeric(10, 2), default=0.00)
+    cgst = Column(Numeric(10, 2), default=0.00)
+    sgst = Column(Numeric(10, 2), default=0.00)
+    igst = Column(Numeric(10, 2), default=0.00)
+    total_amount = Column(Numeric(10, 2), nullable=False)
+    
+    pdf_path = Column(String(500), nullable=True)
+    status = Column(String(30), default="GENERATED") # GENERATED, CANCELLED, REFUNDED
+    created_at = Column(DateTime, server_default=func.now(), index=True)
+
+    __table_args__ = (
+        Index('idx_invoices_customer_date', 'customer_id', 'created_at'),
+    )