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/analytics/routes/pages/__init__.py

@@ -1,13 +1,2 @@
 # app/modules/analytics/routes/pages/__init__.py
-"""
-Analytics module page routes.
-
-Provides HTML page endpoints for analytics views:
-- Vendor pages: Analytics dashboard for vendors
-"""
-
-from app.modules.analytics.routes.pages.vendor import router as vendor_router
-
-# Note: Analytics has no admin pages - admin uses the main dashboard
-
-__all__ = ["vendor_router"]
+"""Analytics module page routes."""

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

@@ -0,0 +1,87 @@
+# app/modules/analytics/routes/pages/admin.py
+"""
+Analytics Admin Page Routes (HTML rendering).
+
+Admin pages for code quality and analytics:
+- Code quality dashboard
+- Violations list
+- Violation detail
+"""
+
+from fastapi import APIRouter, Depends, Path, 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()
+
+
+# ============================================================================
+# CODE QUALITY & ARCHITECTURE ROUTES
+# ============================================================================
+
+
+@router.get("/code-quality", response_class=HTMLResponse, include_in_schema=False)
+async def admin_code_quality_dashboard(
+    request: Request,
+    current_user: User = Depends(
+        require_menu_access("code-quality", FrontendType.ADMIN)
+    ),
+    db: Session = Depends(get_db),
+):
+    """
+    Render code quality dashboard.
+    Shows architecture violations, trends, and technical debt score.
+    """
+    return templates.TemplateResponse(
+        "dev_tools/admin/code-quality-dashboard.html",
+        get_admin_context(request, current_user),
+    )
+
+
+@router.get(
+    "/code-quality/violations", response_class=HTMLResponse, include_in_schema=False
+)
+async def admin_code_quality_violations(
+    request: Request,
+    current_user: User = Depends(
+        require_menu_access("code-quality", FrontendType.ADMIN)
+    ),
+    db: Session = Depends(get_db),
+):
+    """
+    Render violations list page.
+    Shows all violations with filtering and sorting options.
+    """
+    return templates.TemplateResponse(
+        "dev_tools/admin/code-quality-violations.html",
+        get_admin_context(request, current_user),
+    )
+
+
+@router.get(
+    "/code-quality/violations/{violation_id}",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+async def admin_code_quality_violation_detail(
+    request: Request,
+    violation_id: int = Path(..., description="Violation ID"),
+    current_user: User = Depends(
+        require_menu_access("code-quality", FrontendType.ADMIN)
+    ),
+    db: Session = Depends(get_db),
+):
+    """
+    Render violation detail page.
+    Shows violation details, code context, assignments, and comments.
+    """
+    return templates.TemplateResponse(
+        "dev_tools/admin/code-quality-violation-detail.html",
+        get_admin_context(request, current_user, violation_id=violation_id),
+    )

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

@@ -12,7 +12,7 @@ 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.services.platform_settings_service import platform_settings_service  # noqa: MOD-004 - shared platform service
+from app.modules.core.services.platform_settings_service import platform_settings_service  # noqa: MOD-004 - shared platform service
 from app.templates_config import templates
 from models.database.user import User
 from models.database.vendor import Vendor

app/modules/analytics/services/stats_service.py

@@ -18,7 +18,7 @@ from typing import Any
 from sqlalchemy import func
 from sqlalchemy.orm import Session
 
-from app.exceptions import AdminOperationException, VendorNotFoundException
+from app.modules.tenancy.exceptions import AdminOperationException, VendorNotFoundException
 from app.modules.customers.models.customer import Customer
 from app.modules.inventory.models import Inventory
 from app.modules.marketplace.models import MarketplaceImportJob, MarketplaceProduct

app/modules/analytics/services/usage_service.py

@@ -93,7 +93,7 @@ class UsageService:
 
         Returns current usage, limits, and upgrade recommendations.
         """
-        from app.services.subscription_service import subscription_service
+        from app.modules.billing.services.subscription_service import subscription_service
 
         # Get subscription
         subscription = subscription_service.get_or_create_subscription(db, vendor_id)
@@ -151,7 +151,7 @@ class UsageService:
         Returns:
             LimitCheckData with proceed status and upgrade info
         """
-        from app.services.subscription_service import subscription_service
+        from app.modules.billing.services.subscription_service import subscription_service
 
         if limit_type == "orders":
             can_proceed, message = subscription_service.can_create_order(db, vendor_id)