refactor: complete module-driven architecture migration

This commit completes the migration to a fully module-driven architecture:

## Models Migration
- Moved all domain models from models/database/ to their respective modules:
  - tenancy: User, Admin, Vendor, Company, Platform, VendorDomain, etc.
  - cms: MediaFile, VendorTheme
  - messaging: Email, VendorEmailSettings, VendorEmailTemplate
  - core: AdminMenuConfig
- models/database/ now only contains Base and TimestampMixin (infrastructure)

## Schemas Migration
- Moved all domain schemas from models/schema/ to their respective modules:
  - tenancy: company, vendor, admin, team, vendor_domain
  - cms: media, image, vendor_theme
  - messaging: email
- models/schema/ now only contains base.py and auth.py (infrastructure)

## Routes Migration
- Moved admin routes from app/api/v1/admin/ to modules:
  - menu_config.py -> core module
  - modules.py -> tenancy module
  - module_config.py -> tenancy module
- app/api/v1/admin/ now only aggregates auto-discovered module routes

## Menu System
- Implemented module-driven menu system with MenuDiscoveryService
- Extended FrontendType enum: PLATFORM, ADMIN, VENDOR, STOREFRONT
- Added MenuItemDefinition and MenuSectionDefinition dataclasses
- Each module now defines its own menu items in definition.py
- MenuService integrates with MenuDiscoveryService for template rendering

## Documentation
- Updated docs/architecture/models-structure.md
- Updated docs/architecture/menu-management.md
- Updated architecture validation rules for new exceptions

## Architecture Validation
- Updated MOD-019 rule to allow base.py in models/schema/
- Created core module exceptions.py and schemas/ directory
- All validation errors resolved (only warnings remain)

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

app/modules/analytics/definition.py

@@ -6,8 +6,8 @@ Defines the analytics module including its features, menu items,
 route configurations, and self-contained module settings.
 """
 
-from app.modules.base import ModuleDefinition
-from models.database.admin_menu_config import FrontendType
+from app.modules.base import MenuItemDefinition, MenuSectionDefinition, ModuleDefinition
+from app.modules.enums import FrontendType
 
 
 def _get_vendor_api_router():
@@ -45,6 +45,27 @@ analytics_module = ModuleDefinition(
             "analytics",  # Vendor analytics page
         ],
     },
+    # New module-driven menu definitions
+    menus={
+        FrontendType.VENDOR: [
+            MenuSectionDefinition(
+                id="main",
+                label_key=None,
+                icon=None,
+                order=0,
+                is_collapsible=False,
+                items=[
+                    MenuItemDefinition(
+                        id="analytics",
+                        label_key="analytics.menu.analytics",
+                        icon="chart-bar",
+                        route="/vendor/{vendor_code}/analytics",
+                        order=20,
+                    ),
+                ],
+            ),
+        ],
+    },
     is_core=False,
     # =========================================================================
     # Self-Contained Module Configuration

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

@@ -25,7 +25,7 @@ from app.modules.analytics.schemas import (
     VendorAnalyticsResponse,
 )
 from app.modules.billing.models import FeatureCode
-from models.database.user import User
+from app.modules.tenancy.models import User
 
 router = APIRouter(
     prefix="/analytics",

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

@@ -15,8 +15,8 @@ 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
+from app.modules.enums import FrontendType
+from app.modules.tenancy.models import User
 
 router = APIRouter()
 

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

@@ -14,8 +14,8 @@ from sqlalchemy.orm import Session
 from app.api.deps import get_current_vendor_from_cookie_or_header, get_db
 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
+from app.modules.tenancy.models import User
+from app.modules.tenancy.models import Vendor
 
 logger = logging.getLogger(__name__)
 

app/modules/analytics/services/stats_service.py

@@ -24,8 +24,8 @@ from app.modules.inventory.models import Inventory
 from app.modules.marketplace.models import MarketplaceImportJob, MarketplaceProduct
 from app.modules.orders.models import Order
 from app.modules.catalog.models import Product
-from models.database.user import User
-from models.database.vendor import Vendor
+from app.modules.tenancy.models import User
+from app.modules.tenancy.models import Vendor
 
 logger = logging.getLogger(__name__)
 

app/modules/analytics/services/usage_service.py

@@ -18,7 +18,7 @@ from sqlalchemy.orm import Session
 
 from app.modules.catalog.models import Product
 from app.modules.billing.models import SubscriptionTier, VendorSubscription
-from models.database.vendor import VendorUser
+from app.modules.tenancy.models import VendorUser
 
 logger = logging.getLogger(__name__)