Update ForeignKey reference in PublishingRecord model and enhance integration app configuration

- Changed ForeignKey reference from 'content.Content' to 'writer.Content' in PublishingRecord model to ensure correct app_label usage.
- Updated IntegrationConfig to use a unique label 'integration_module' to avoid conflicts.
- Added 'lucide-react' dependency to package.json and package-lock.json for improved icon support in the frontend.
- Enhanced Vite configuration to optimize dependency pre-bundling for core React dependencies.
- Added Phase 5 Migration Final Verification and Verification Report documents for comprehensive migration tracking.

backend/igny8_core/modules/integration/apps.py

@@ -7,6 +7,6 @@ from django.apps import AppConfig
 class IntegrationConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
     name = 'igny8_core.modules.integration'
-    label = 'integration'
-    verbose_name = 'Integration'
+    label = 'integration_module'  # Unique label to avoid conflict with business.integration
+    verbose_name = 'Integration Module'