feat(agent): render local interactive answers and fold completed process

package.json

@@ -6,6 +6,7 @@
   "packageManager": "pnpm@11.8.0",
   "scripts": {
     "dev": "vite",
+    "export:answer-ui-contract": "node scripts/export-answer-ui-contract.mjs",
     "build": "tsc --noEmit && vite build && pnpm build:verify-css && pnpm build:tts",
     "build:verify-css": "node scripts/verify-production-css.mjs",
     "build:tts": "esbuild server/edge-tts-server.ts --bundle --platform=node --format=cjs --outfile=dist-server/edge-tts-server.cjs",
@@ -20,6 +21,8 @@
   "dependencies": {
     "@ai-sdk/react": "^4.0.9",
     "@fontsource-variable/noto-sans-sc": "5.3.0",
+    "@json-render/core": "^0.21.0",
+    "@json-render/react": "^0.21.0",
     "@radix-ui/react-accordion": "^1.2.14",
     "@radix-ui/react-collapsible": "^1.1.14",
     "@radix-ui/react-dialog": "^1.1.17",
@@ -85,7 +88,8 @@
     "tw-animate-css": "^1.4.0",
     "typescript": "^7.0.0",
     "vite": "^7.0.0",
-    "vitest": "^4.1.9"
+    "vitest": "^4.1.9",
+    "zod-to-json-schema": "^3.25.2"
   },
   "msw": {
     "workerDirectory": [