feat: Implement knowledge import feature for characters

- Added KnowledgeImport page for importing character knowledge from URLs.
- Integrated URL validation and error handling for unsupported websites.
- Created API endpoints for importing content from URLs and retrieving character knowledge.
- Enhanced VectorStoreService with logging and error handling for vector memory storage.
- Updated frontend to display knowledge sources and manage them effectively.
- Added support for fetching recent character knowledge as a fallback in similarity searches.
- Updated OpenAPI documentation to reflect new import functionality.

apps/backend/package.json

@@ -4,7 +4,9 @@
   "scripts": {
     "build": "nest build",
     "dev": "nest start --watch",
-    "start": "node dist/main",
+    "start": "node --max-old-space-size=768 dist/main",
+    "start:low-memory": "node --max-old-space-size=384 dist/main",
+    "start:high-memory": "node --max-old-space-size=1536 dist/main",
     "test": "jest",
     "test:watch": "jest --watch",
     "lint": "eslint \"{src,apps,libs,test}/**/*.ts\"",
@@ -46,6 +48,7 @@
     "@nestjs/cli": "^11.0.16",
     "@nestjs/testing": "^11.1.14",
     "@types/bcrypt": "^6.0.0",
+    "@types/jest": "^30.0.0",
     "@types/jsonwebtoken": "^9.0.0",
     "@types/multer": "^1.4.12",
     "@types/node": "^24.10.13",
@@ -53,6 +56,7 @@
     "@types/passport-local": "^1.0.0",
     "jest": "^30.2.0",
     "prisma": "^7.4.1",
+    "ts-jest": "^29.4.6",
     "typescript": "^5.3.0"
   }
 }