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/dev_tools/static/admin/js/components.js

@@ -132,7 +132,7 @@ function adminComponents() {
                 this.addedToCart = true;
                 setTimeout(() => { this.addedToCart = false; }, 2000);
                 if (typeof Utils !== 'undefined' && Utils.showToast) {
-                    Utils.showToast('Added to cart!', 'success');
+                    Utils.showToast(I18n.t('dev_tools.messages.added_to_cart'), 'success');
                 }
             }, 800);
         },
@@ -320,7 +320,7 @@ function adminComponents() {
         demoFilterProducts() {
             componentsLog.debug('Filtering products with:', this.demoActiveFilters);
             if (typeof Utils !== 'undefined' && Utils.showToast) {
-                Utils.showToast('Filters applied!', 'info');
+                Utils.showToast(I18n.t('dev_tools.messages.filters_applied'), 'info');
             }
         },
         demoSortProducts() {
@@ -391,7 +391,7 @@ function adminComponents() {
                 this.showReviewForm = false;
                 this.demoNewReview = { rating: 0, title: '', content: '', images: [] };
                 if (typeof Utils !== 'undefined' && Utils.showToast) {
-                    Utils.showToast('Review submitted successfully!', 'success');
+                    Utils.showToast(I18n.t('dev_tools.messages.review_submitted_successfully'), 'success');
                 }
             }, 1500);
         },
@@ -401,7 +401,7 @@ function adminComponents() {
                 review.helpful_count++;
             }
             if (typeof Utils !== 'undefined' && Utils.showToast) {
-                Utils.showToast('Thanks for your feedback!', 'info');
+                Utils.showToast(I18n.t('dev_tools.messages.thanks_for_your_feedback'), 'info');
             }
         },
 
@@ -468,6 +468,9 @@ function adminComponents() {
 
         // ✅ CRITICAL: Proper initialization with guard
         async init() {
+            // Load i18n translations
+            await I18n.loadModule('dev_tools');
+
             componentsLog.info('=== COMPONENTS PAGE INITIALIZING ===');
 
             // Prevent multiple initializations
@@ -534,7 +537,7 @@ function adminComponents() {
                 await navigator.clipboard.writeText(code);
                 // Use the global Utils.showToast function
                 if (typeof Utils !== 'undefined' && Utils.showToast) {
-                    Utils.showToast('Code copied to clipboard!', 'success');
+                    Utils.showToast(I18n.t('dev_tools.messages.code_copied_to_clipboard'), 'success');
                 } else {
                     componentsLog.warn('Utils.showToast not available');
                 }
@@ -542,7 +545,7 @@ function adminComponents() {
             } catch (error) {
                 window.LogConfig.logError(error, 'Copy Code');
                 if (typeof Utils !== 'undefined' && Utils.showToast) {
-                    Utils.showToast('Failed to copy code', 'error');
+                    Utils.showToast(I18n.t('dev_tools.messages.failed_to_copy_code'), 'error');
                 }
             }
         },

app/modules/dev_tools/static/admin/js/icons-page.js

@@ -45,6 +45,9 @@ function adminIcons() {
 
         // ✅ CRITICAL: Proper initialization with guard
         async init() {
+            // Load i18n translations
+            await I18n.loadModule('dev_tools');
+
             iconsLog.info('=== ICONS PAGE INITIALIZING ===');
 
             // Prevent multiple initializations
@@ -169,7 +172,7 @@ function adminIcons() {
                 iconsLog.debug('Icon usage code copied:', iconName);
             } catch (error) {
                 window.LogConfig.logError(error, 'Copy Icon Usage');
-                Utils.showToast('Failed to copy code', 'error');
+                Utils.showToast(I18n.t('dev_tools.messages.failed_to_copy_code'), 'error');
             }
         },
 
@@ -183,7 +186,7 @@ function adminIcons() {
                 iconsLog.debug('Icon name copied:', iconName);
             } catch (error) {
                 window.LogConfig.logError(error, 'Copy Icon Name');
-                Utils.showToast('Failed to copy name', 'error');
+                Utils.showToast(I18n.t('dev_tools.messages.failed_to_copy_name'), 'error');
             }
         },
 

app/modules/dev_tools/static/admin/js/testing-dashboard.js

@@ -54,6 +54,9 @@ function testingDashboard() {
         runs: [],
 
         async init() {
+            // Load i18n translations
+            await I18n.loadModule('dev_tools');
+
             // Guard against multiple initialization
             if (window._adminTestingDashboardInitialized) return;
             window._adminTestingDashboardInitialized = true;
@@ -148,7 +151,7 @@ function testingDashboard() {
                 // Start polling for status
                 this.pollInterval = setInterval(() => this.pollRunStatus(), 2000);
 
-                Utils.showToast('Test run started...', 'info');
+                Utils.showToast(I18n.t('dev_tools.messages.test_run_started'), 'info');
 
             } catch (err) {
                 testingDashboardLog.error('Failed to start tests:', err);