fix: bundle @libsql/client to resolve Vercel deployment issue

Bundle @libsql/client into the serverless function instead of keeping
it external. This resolves the "Cannot find package '@libsql/client'"
error that persisted even with includeFiles configuration.

Changes:
- Remove @libsql/client from EXTERNAL array in bundle-api.mjs
- Remove @libsql from includeFiles pattern in vercel.json
- Stop copying @libsql packages in build-vercel.sh

@libsql/client is pure JavaScript with no native bindings, so bundling
it completely eliminates runtime dependency resolution issues.

Agent-Logs-Url: https://github.com/objectstack-ai/framework/sessions/b7028017-b002-464e-845b-4757cf731cdd

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

Author: Claude

apps/studio/scripts/build-vercel.sh

@@ -38,6 +38,8 @@ node scripts/bundle-api.mjs
 #    The vercel.json includeFiles pattern references node_modules/ relative to
 #    apps/studio/, so we must copy the actual module files here for Vercel to
 #    include them in the serverless function's deployment package.
+#
+#    Note: @libsql/client is now bundled by esbuild, so we no longer copy it.
 echo "[build-vercel] Copying external native modules to local node_modules..."
 for mod in better-sqlite3; do
   src="../../node_modules/$mod"
@@ -50,17 +52,6 @@ for mod in better-sqlite3; do
     echo "[build-vercel]   ⚠ $mod not found at $src (skipped)"
   fi
 done
-# Copy the @libsql scope (client + its sub-dependencies like core, hrana-client)
-if [ -d "../../node_modules/@libsql" ]; then
-  mkdir -p "node_modules/@libsql"
-  for pkg in ../../node_modules/@libsql/*/; do
-    pkgname="$(basename "$pkg")"
-    cp -rL "$pkg" "node_modules/@libsql/$pkgname"
-  done
-  echo "[build-vercel]   ✓ Copied @libsql/*"
-else
-  echo "[build-vercel]   ⚠ @libsql not found (skipped)"
-fi
 # Copy the @ai-sdk scope (dynamically loaded provider packages)
 if [ -d "../../node_modules/@ai-sdk" ]; then
   mkdir -p "node_modules/@ai-sdk"

apps/studio/scripts/bundle-api.mjs

@@ -16,7 +16,9 @@ import { build } from 'esbuild';
 
 // Packages that cannot be bundled (native bindings / optional drivers)
 const EXTERNAL = [
-  '@libsql/client',
+  // @libsql/client is now bundled (pure JS, no native bindings)
+  // Bundling it solves Vercel deployment issues where external packages
+  // aren't properly included in the serverless function despite includeFiles config
   'better-sqlite3',
   // AI SDK provider packages — dynamically imported based on env vars
   '@ai-sdk/anthropic',

apps/studio/vercel.json

@@ -13,7 +13,7 @@
     "api/**/*.js": {
       "memory": 1024,
       "maxDuration": 300,
-      "includeFiles": "node_modules/{@libsql,better-sqlite3,@ai-sdk}/**"
+      "includeFiles": "node_modules/{better-sqlite3,@ai-sdk}/**"
     }
   },
   "headers": [