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.

frontend/package-lock.json

@@ -20,6 +20,7 @@
         "apexcharts": "^4.1.0",
         "clsx": "^2.1.1",
         "flatpickr": "^4.6.13",
+        "lucide-react": "^0.554.0",
         "react": "^19.0.0",
         "react-apexcharts": "^1.7.0",
         "react-dnd": "^16.0.1",
@@ -3822,6 +3823,15 @@
         "yallist": "^3.0.2"
       }
     },
+    "node_modules/lucide-react": {
+      "version": "0.554.0",
+      "resolved": "https://registry.npmjs.org/lucide-react/-/lucide-react-0.554.0.tgz",
+      "integrity": "sha512-St+z29uthEJVx0Is7ellNkgTEhaeSoA42I7JjOCBCrc5X6LYMGSv0P/2uS5HDLTExP5tpiqRD2PyUEOS6s9UXA==",
+      "license": "ISC",
+      "peerDependencies": {
+        "react": "^16.5.1 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
     "node_modules/merge2": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/merge2/-/merge2-1.4.1.tgz",