fix(build): configure Cloudflare Pages deployment with OpenNext adapter

- Add output: 'standalone' to Next.js config for OpenNext compatibility
- Split build script into build:next and build to avoid circular dependency
- Update deploy/preview scripts to use --skipBuild flag with opennextjs-cloudflare
- Update CI workflow to upload both .next and .open-next build artifacts

This fixes the Cloudflare Pages build failure where worker.js was not found.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ericyangpan

.github/workflows/ci.yml

@@ -132,7 +132,9 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: build-output
-          path: .next
+          path: |
+            .next
+            .open-next
           retention-days: 7
 
   ci-success:

next.config.ts

@@ -39,6 +39,9 @@ const securityHeaders = [
 const nextConfig: NextConfig = {
   pageExtensions: ['js', 'jsx', 'md', 'mdx', 'ts', 'tsx'],
 
+  // Required for OpenNext Cloudflare adapter
+  output: 'standalone',
+
   // Performance optimizations
   compress: true, // Enable gzip compression
   poweredByHeader: false, // Remove X-Powered-By header for security

package.json

@@ -4,7 +4,8 @@
   "description": "AI Coding Stack Website",
   "scripts": {
     "dev": "npm run generate:manifests && npm run generate:metadata && next dev",
-    "build": "npm run validate:manifests && npm run generate:manifests && npm run generate:metadata && BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ) next build",
+    "build:next": "npm run validate:manifests && npm run generate:manifests && npm run generate:metadata && BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ) next build",
+    "build": "npm run build:next && opennextjs-cloudflare build --skipBuild",
     "start": "next start",
     "format": "biome format --write .",
     "format:check": "biome format .",
@@ -19,8 +20,8 @@
     "generate:manifests": "node scripts/generate-manifest-indexes.mjs",
     "generate:metadata": "node scripts/generate-metadata.mjs",
     "fetch:github-stars": "node scripts/fetch-github-stars.mjs",
-    "deploy": "npm run validate:manifests && npm run generate:manifests && npm run generate:metadata && BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ) opennextjs-cloudflare build && opennextjs-cloudflare deploy",
-    "preview": "npm run validate:manifests && npm run generate:manifests && npm run generate:metadata && BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ) opennextjs-cloudflare build && opennextjs-cloudflare preview",
+    "deploy": "npm run build:next && opennextjs-cloudflare build --skipBuild && opennextjs-cloudflare deploy",
+    "preview": "npm run build:next && opennextjs-cloudflare build --skipBuild && opennextjs-cloudflare preview",
     "cf-typegen": "wrangler types --env-interface CloudflareEnv ./cloudflare-env.d.ts",
     "analyze": "ANALYZE=true BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ) npm run build",
     "prepare": "husky"