- Create invoices.controller.ts and invoices.routes.ts with singleton service
- Create products.service.ts, products.controller.ts, products.routes.ts
- Create warehouses.service.ts, warehouses.controller.ts, warehouses.routes.ts
- Register all routes in app.ts
- Use Zod validation schemas in all controllers
- Apply multi-tenant isolation via tenantId
- Update invoices.module.ts to use singleton pattern
All business modules now have API routes registered and build passes.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
