fix: remove TS stub after esbuild bundle to prevent Vercel ERR_MODULE_NOT_FOUND

Agent-Logs-Url: https://github.com/objectstack-ai/framework/sessions/0302d779-7522-4028-ae9c-50d58b9fa1e9

Co-authored-by: xuyushun441-sys <255036401+xuyushun441-sys@users.noreply.github.com>

Author: Copilot

CHANGELOG.md

@@ -14,6 +14,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   switched esbuild output from CJS to ESM (fixes `"type": "module"` conflict),
   and changed the output path from `api/index.js` to `api/[[...route]].js`.
   Updated rewrites to match: `/api/:path*` → `/api/[[...route]]`.
+  Added post-bundle cleanup to remove the `.ts` stub so Vercel's
+  `@vercel/node` builder uses the self-contained esbuild bundle instead of
+  compiling the stub (which would fail with `ERR_MODULE_NOT_FOUND`).
 - **Studio CORS error on Vercel temporary/preview domains** — Changed
   `VITE_SERVER_URL` from hardcoded `https://play.objectstack.ai` to `""`
   (empty string / same-origin) in `vercel.json` so each deployment — including

apps/studio/scripts/build-vercel.sh

@@ -26,6 +26,11 @@ cd apps/studio
 
 # 2. Bundle API serverless function
 node scripts/bundle-api.mjs
+# Remove the TS source file so Vercel's @vercel/node builder uses the
+# pre-bundled JS directly.  Without this, Vercel compiles the TS stub
+# itself, producing a thin re-export that references ../server/index —
+# a file that doesn't exist at runtime (ERR_MODULE_NOT_FOUND).
+rm -f "api/[[...route]].ts"
 
 # 3. Copy Vite build output to public/ for static file serving
 rm -rf public