fix(frontend): migrate tsconfig off TS 6.0 deprecated options

- esModuleInterop: false -> true (modern default)
- moduleResolution: Node -> Bundler (recommended for Vite)
- remove baseUrl; paths resolves relative to tsconfig

frontend/tsconfig.node.json

@@ -2,9 +2,8 @@
   "compilerOptions": {
     "composite": true,
     "module": "ESNext",
-    "moduleResolution": "Node",
-    "allowSyntheticDefaultImports": true,
-    "ignoreDeprecations": "6.0"
+    "moduleResolution": "Bundler",
+    "allowSyntheticDefaultImports": true
   },
   "include": ["vite.config.ts"]
 }