refactor: migrate templates and static files to self-contained modules

Templates Migration:
- Migrate admin templates to modules (tenancy, billing, monitoring, marketplace, etc.)
- Migrate vendor templates to modules (tenancy, billing, orders, messaging, etc.)
- Migrate storefront templates to modules (catalog, customers, orders, cart, checkout, cms)
- Migrate public templates to modules (billing, marketplace, cms)
- Keep shared templates in app/templates/ (base.html, errors/, partials/, macros/)
- Migrate letzshop partials to marketplace module

Static Files Migration:
- Migrate admin JS to modules: tenancy (23 files), core (5 files), monitoring (1 file)
- Migrate vendor JS to modules: tenancy (4 files), core (2 files)
- Migrate shared JS: vendor-selector.js to core, media-picker.js to cms
- Migrate storefront JS: storefront-layout.js to core
- Keep framework JS in static/ (api-client, utils, money, icons, log-config, lib/)
- Update all template references to use module_static paths

Naming Consistency:
- Rename static/platform/ to static/public/
- Rename app/templates/platform/ to app/templates/public/
- Update all extends and static references

Documentation:
- Update module-system.md with shared templates documentation
- Update frontend-structure.md with new module JS organization

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/modules/orders/routes/api/admin.py

@@ -21,7 +21,7 @@ from sqlalchemy.orm import Session
 
 from app.api.deps import get_current_admin_api, require_module_access
 from app.core.database import get_db
-from app.services.order_service import order_service
+from app.modules.orders.services.order_service import order_service
 from models.schema.auth import UserContext
 from app.modules.orders.schemas import (
     AdminOrderItem,

app/modules/orders/routes/api/admin_exceptions.py

@@ -16,7 +16,7 @@ from sqlalchemy.orm import Session
 
 from app.api.deps import get_current_admin_api, require_module_access
 from app.core.database import get_db
-from app.services.order_item_exception_service import order_item_exception_service
+from app.modules.orders.services.order_item_exception_service import order_item_exception_service
 from models.schema.auth import UserContext
 from app.modules.orders.schemas import (
     BulkResolveRequest,

app/modules/orders/routes/api/storefront.py

@@ -20,11 +20,12 @@ from sqlalchemy.orm import Session
 
 from app.api.deps import get_current_customer_api
 from app.core.database import get_db
-from app.exceptions import OrderNotFoundException, VendorNotFoundException
-from app.exceptions.invoice import InvoicePDFNotFoundException
+from app.modules.orders.exceptions import OrderNotFoundException
+from app.modules.tenancy.exceptions import VendorNotFoundException
+from app.modules.orders.exceptions import InvoicePDFNotFoundException
 from app.modules.customers.schemas import CustomerContext
 from app.modules.orders.services import order_service
-from app.services.invoice_service import invoice_service  # noqa: MOD-004 - Core invoice service
+from app.modules.orders.services.invoice_service import invoice_service  # noqa: MOD-004 - Core invoice service
 from app.modules.orders.schemas import (
     OrderDetailResponse,
     OrderListResponse,

app/modules/orders/routes/api/vendor.py

@@ -16,8 +16,8 @@ from sqlalchemy.orm import Session
 
 from app.api.deps import get_current_vendor_api, require_module_access
 from app.core.database import get_db
-from app.services.order_inventory_service import order_inventory_service
-from app.services.order_service import order_service
+from app.modules.orders.services.order_inventory_service import order_inventory_service
+from app.modules.orders.services.order_service import order_service
 from models.schema.auth import UserContext
 from app.modules.orders.schemas import (
     OrderDetailResponse,

app/modules/orders/routes/api/vendor_exceptions.py

@@ -15,7 +15,7 @@ from sqlalchemy.orm import Session
 
 from app.api.deps import get_current_vendor_api, require_module_access
 from app.core.database import get_db
-from app.services.order_item_exception_service import order_item_exception_service
+from app.modules.orders.services.order_item_exception_service import order_item_exception_service
 from models.schema.auth import UserContext
 from app.modules.orders.schemas import (
     BulkResolveRequest,

app/modules/orders/routes/api/vendor_invoices.py

@@ -34,10 +34,10 @@ from sqlalchemy.orm import Session
 from app.api.deps import get_current_vendor_api, require_module_access
 from app.core.database import get_db
 from app.core.feature_gate import RequireFeature
-from app.exceptions.invoice import (
+from app.modules.orders.exceptions import (
     InvoicePDFNotFoundException,
 )
-from app.services.invoice_service import invoice_service
+from app.modules.orders.services.invoice_service import invoice_service
 from app.modules.billing.models import FeatureCode
 from models.schema.auth import UserContext
 from app.modules.orders.schemas import (

app/modules/orders/routes/pages/__init__.py

@@ -1,4 +1,2 @@
-# Page routes will be added here
-# TODO: Add HTML page routes for admin/vendor dashboards
-
-__all__ = []
+# app/modules/orders/routes/pages/__init__.py
+"""Orders module page routes."""

app/modules/orders/routes/pages/admin.py

@@ -0,0 +1,40 @@
+# app/modules/orders/routes/pages/admin.py
+"""
+Orders Admin Page Routes (HTML rendering).
+
+Admin pages for order management:
+- Orders list
+"""
+
+from fastapi import APIRouter, Depends, Request
+from fastapi.responses import HTMLResponse
+from sqlalchemy.orm import Session
+
+from app.api.deps import get_db, require_menu_access
+from app.modules.core.utils.page_context import get_admin_context
+from app.templates_config import templates
+from models.database.admin_menu_config import FrontendType
+from models.database.user import User
+
+router = APIRouter()
+
+
+# ============================================================================
+# ORDER MANAGEMENT ROUTES
+# ============================================================================
+
+
+@router.get("/orders", response_class=HTMLResponse, include_in_schema=False)
+async def admin_orders_page(
+    request: Request,
+    current_user: User = Depends(require_menu_access("orders", FrontendType.ADMIN)),
+    db: Session = Depends(get_db),
+):
+    """
+    Render orders management page.
+    Shows orders across all vendors with filtering and status management.
+    """
+    return templates.TemplateResponse(
+        "orders/admin/orders.html",
+        get_admin_context(request, current_user),
+    )

app/modules/orders/routes/pages/storefront.py

@@ -0,0 +1,86 @@
+# app/modules/orders/routes/pages/storefront.py
+"""
+Orders Storefront Page Routes (HTML rendering).
+
+Storefront (customer shop) pages for order history:
+- Orders list
+- Order detail
+"""
+
+import logging
+
+from fastapi import APIRouter, Depends, Path, Request
+from fastapi.responses import HTMLResponse
+from sqlalchemy.orm import Session
+
+from app.api.deps import get_current_customer_from_cookie_or_header, get_db
+from app.modules.core.utils.page_context import get_storefront_context
+from app.modules.customers.models import Customer
+from app.templates_config import templates
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter()
+
+
+# ============================================================================
+# CUSTOMER ACCOUNT - ORDERS (Authenticated)
+# ============================================================================
+
+
+@router.get("/account/orders", response_class=HTMLResponse, include_in_schema=False)
+async def shop_orders_page(
+    request: Request,
+    current_customer: Customer = Depends(get_current_customer_from_cookie_or_header),
+    db: Session = Depends(get_db),
+):
+    """
+    Render customer orders history page.
+    Shows all past and current orders.
+    Requires customer authentication.
+    """
+    logger.debug(
+        "[STOREFRONT] shop_orders_page REACHED",
+        extra={
+            "path": request.url.path,
+            "vendor": getattr(request.state, "vendor", "NOT SET"),
+            "context": getattr(request.state, "context_type", "NOT SET"),
+        },
+    )
+
+    return templates.TemplateResponse(
+        "orders/storefront/orders.html",
+        get_storefront_context(request, db=db, user=current_customer),
+    )
+
+
+@router.get(
+    "/account/orders/{order_id}",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+async def shop_order_detail_page(
+    request: Request,
+    order_id: int = Path(..., description="Order ID"),
+    current_customer: Customer = Depends(get_current_customer_from_cookie_or_header),
+    db: Session = Depends(get_db),
+):
+    """
+    Render customer order detail page.
+    Shows detailed order information and tracking.
+    Requires customer authentication.
+    """
+    logger.debug(
+        "[STOREFRONT] shop_order_detail_page REACHED",
+        extra={
+            "path": request.url.path,
+            "order_id": order_id,
+            "vendor": getattr(request.state, "vendor", "NOT SET"),
+            "context": getattr(request.state, "context_type", "NOT SET"),
+        },
+    )
+
+    return templates.TemplateResponse(
+        "orders/storefront/order-detail.html",
+        get_storefront_context(request, db=db, user=current_customer, order_id=order_id),
+    )

app/modules/orders/routes/pages/vendor.py

@@ -0,0 +1,73 @@
+# app/modules/orders/routes/pages/vendor.py
+"""
+Orders Vendor Page Routes (HTML rendering).
+
+Vendor pages for order management:
+- Orders list
+- Order detail
+"""
+
+from fastapi import APIRouter, Depends, Path, Request
+from fastapi.responses import HTMLResponse
+from sqlalchemy.orm import Session
+
+from app.api.deps import get_current_vendor_from_cookie_or_header, get_db
+from app.modules.core.utils.page_context import get_vendor_context
+from app.templates_config import templates
+from models.database.user import User
+
+router = APIRouter()
+
+
+# ============================================================================
+# ORDER MANAGEMENT
+# ============================================================================
+
+
+@router.get(
+    "/{vendor_code}/orders", response_class=HTMLResponse, include_in_schema=False
+)
+async def vendor_orders_page(
+    request: Request,
+    vendor_code: str = Path(..., description="Vendor code"),
+    current_user: User = Depends(get_current_vendor_from_cookie_or_header),
+    db: Session = Depends(get_db),
+):
+    """
+    Render orders management page.
+    JavaScript loads order list via API.
+    """
+    return templates.TemplateResponse(
+        "orders/vendor/orders.html",
+        get_vendor_context(request, db, current_user, vendor_code),
+    )
+
+
+@router.get(
+    "/{vendor_code}/orders/{order_id}",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+async def vendor_order_detail_page(
+    request: Request,
+    vendor_code: str = Path(..., description="Vendor code"),
+    order_id: int = Path(..., description="Order ID"),
+    current_user: User = Depends(get_current_vendor_from_cookie_or_header),
+    db: Session = Depends(get_db),
+):
+    """
+    Render order detail page.
+
+    Shows comprehensive order information including:
+    - Order header and status
+    - Customer and shipping details
+    - Order items with shipment status
+    - Invoice creation/viewing
+    - Partial shipment controls
+
+    JavaScript loads order details via API.
+    """
+    return templates.TemplateResponse(
+        "orders/vendor/order-detail.html",
+        get_vendor_context(request, db, current_user, vendor_code, order_id=order_id),
+    )