refactor: remove WebSocket implementation and switch to HTTP-only sync with configurable polling interval

CollabTableServer/package.json

@@ -19,10 +19,9 @@
     "cors": "^2.8.5",
     "better-sqlite3": "^11.0.0",
     "dotenv": "^16.3.1",
-    "ws": "^8.16.0",
-  "@typescript-eslint/eslint-plugin": "^7.0.2",
-  "@typescript-eslint/parser": "^7.0.2",
-  "eslint": "^8.57.0",
+    "@typescript-eslint/eslint-plugin": "^7.0.2",
+    "@typescript-eslint/parser": "^7.0.2",
+    "eslint": "^8.57.0",
     "eslint-config-prettier": "^9.1.0",
     "prettier": "^3.3.3",
     "pg": "^8.11.3"
@@ -32,7 +31,6 @@
     "@types/cors": "^2.8.17",
     "@types/node": "^20.10.6",
     "@types/better-sqlite3": "^7.6.11",
-    "@types/ws": "^8.5.10",
     "@types/pg": "^8.10.2",
     "typescript": "^5.3.3",
     "ts-node-dev": "^2.0.0"