fix(studio): move Vercel function config inline to fix pre-build pattern validation error

The `functions` key in vercel.json referenced `api/index.js` — a build
artifact that does not exist in the source tree. Vercel CLI validates
patterns against source files before the build runs, producing:

  Error: The pattern "api/index.js" defined in "functions" doesn't match
  any Serverless Functions inside the "api" directory.

Remove the `functions` block from vercel.json and add the memory/maxDuration
settings as an inline `export const config` in server/index.ts. This is the
standard Vercel per-function configuration mechanism and is bundled into
api/index.js by esbuild.

Agent-Logs-Url: https://github.com/objectstack-ai/spec/sessions/85631b23-602d-4fab-b9c9-0bfad16ed0fe

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

Author: Copilot

apps/studio/CHANGELOG.md

@@ -48,6 +48,15 @@
 
 ### Fixes
 
+- **Vercel deployment: Fix `functions` pattern validation error**
+  - The `functions` key in `vercel.json` referenced `api/index.js` — a build artifact created by
+    `bundle-api.mjs` — which does not exist in the source tree. Vercel CLI validates patterns against
+    source files before the build runs, producing the error:
+    `The pattern "api/index.js" defined in "functions" doesn't match any Serverless Functions`.
+  - Removed `functions` from `vercel.json` and moved the memory/maxDuration settings to an inline
+    `export const config` in `server/index.ts`. This is the standard Vercel per-function configuration
+    mechanism and is bundled into `api/index.js` by esbuild.
+
 - **Vercel deployment: Fix `@vercel/node@3` runtime error**
   - Removed the `functions.runtime` config from `vercel.json` — the `runtime` field is only for custom/community runtimes, not Node.js. Vercel auto-detects the pre-bundled `api/index.js` as a Node.js serverless function.
 

apps/studio/server/index.ts

@@ -235,3 +235,15 @@ app.all('*', async (c) => {
 });
 
 export default handle(app);
+
+/**
+ * Vercel per-function configuration.
+ *
+ * Picked up by the @vercel/node runtime from the deployed api/index.js bundle.
+ * Replaces the top-level "functions" key in vercel.json so there is no
+ * pre-build file-pattern validation against a not-yet-bundled artifact.
+ */
+export const config = {
+    memory: 1024,
+    maxDuration: 60,
+};

apps/studio/vercel.json

@@ -10,12 +10,6 @@
       "VITE_SERVER_URL": "https://play.objectstack.ai"
     }
   },
-  "functions": {
-    "api/index.js": {
-      "memory": 1024,
-      "maxDuration": 60
-    }
-  },
   "rewrites": [
     { "source": "/api/(.*)", "destination": "/api" },
     { "source": "/((?!api/).*)", "destination": "/index.html" }