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/business/publishing/models.py

@@ -20,7 +20,7 @@ class PublishingRecord(SiteSectorBaseModel):
     
     # Content or SiteBlueprint reference (one must be set)
     content = models.ForeignKey(
-        'content.Content',
+        'writer.Content',
         on_delete=models.CASCADE,
         null=True,
         blank=True,