fix(app-host): set framework to null in vercel.json to disable automatic framework detection

Agent-Logs-Url: https://github.com/objectstack-ai/framework/sessions/27393574-eb43-4112-b970-668b8ea9e8d9

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Claude

examples/app-host/api/[[...route]].js

@@ -13,7 +13,4 @@
 // @see ../server/index.ts    — the actual server entrypoint
 // @see ../scripts/bundle-api.mjs — the esbuild bundler
 
-// Import Hono to satisfy Vercel's framework detection (unused, but required for detection).
-import 'hono';
-
 export { default, config } from './_handler.js';

examples/app-host/vercel.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://openapi.vercel.sh/vercel.json",
-  "framework": "hono",
+  "framework": null,
   "installCommand": "cd ../.. && pnpm install",
   "buildCommand": "bash scripts/build-vercel.sh",
   "functions": {