[WIP] Fix error for missing production build in .next directory

[Copilot]

Cloud agent has begun work on PS C:\Users\LEABR\Gi... and will update this pull request as work progresses.

Original prompt

PS C:\Users\LEABR\Github\Kuno> npm run start

kuno@0.1.0 start
next start

▲ Next.js 15.5.15

• Local: http://localhost:3000
• Network: http://192.168.56.1:3000

✓ Starting...
[Error: Could not find a production build in the '.next' directory. Try building your app with 'next build' before starting the production server. https://nextjs.org/docs/messages/production-start-no-build-id]
PS C:\Users\LEABR\Github\Kuno> npm run build

kuno@0.1.0 build
npm run check:slots && next build

kuno@0.1.0 check:slots
node -e "const fs=require('fs');const path=require('path');const root=path.join(process.cwd(),'src','app');const bad=[];const ok=s=>/^[A-Za-z_$][A-Za-z0-9_$]*$/.test(s);const walk=d=>{for(const e of fs.readdirSync(d,{withFileTypes:true})){if(!e.isDirectory()) continue;const full=path.join(d,e.name);if(e.name.startsWith('@')){const slot=e.name.slice(1);if(!ok(slot)) bad.push(path.relative(process.cwd(),full));}walk(full);}};if(fs.existsSync(root)) walk(root);if(bad.length){console.error('Invalid Next.js parallel route slot names:\n'+bad.map(x=>' - '+x).join('\n'));process.exit(1);}console.log('Parallel route slot names OK in src/app.');"

Invalid Next.js parallel route slot names:

• src\app@udir-design
  PS C:\Users\LEABR\Github\Kuno>

Created from VS Code.

[Copilot]

Copilot wasn't able to review any files in this pull request.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.