metabuilder/.github/prompts/implement/frontend/3-impl-feature.prompt.md

Implement Feature

Implement following MetaBuilder conventions:

Run app commands from frontends/nextjs/ unless a step says otherwise.

Implementation Order

1. Schema first: Update prisma/schema.prisma if needed

   npm run db:generate && npm run db:push
   

2. DBAL contracts: If new entity/operation, update YAML in dbal/api/schema/

3. Database layer: Add methods to Database class in src/lib/database.ts

4. Business logic:

   • Simple validation → Lua script
   • Complex logic → TypeScript in src/lib/

5. UI components:

   • Declarative → packages/*/seed/components.json
   • React → src/components/ (< 150 LOC)

6. Tests: Parameterized tests next to source files

Checklist

• tenantId filtering on all queries
• Permission level check
• Component under 150 LOC
• No hardcoded values (use DB/config)
• Tests with it.each() pattern