- Create CreatePlanModal component with Headless UI Dialog
- Implement dark mode support throughout plans UI
- Update plans/page.tsx with professional card layout
- Update plans/[id]/page.tsx with consistent styling
- Add proper spacing, typography, and color consistency
- Implement smooth animations and transitions
- Add success/error message feedback
- Improve form UX with better input styling
- Validação cross-tenant no login e rotas protegidas
- File serving via /api/files/{bucket}/{path} (eliminação DNS)
- Mensagens de erro humanizadas inline (sem pop-ups)
- Middleware tenant detection via headers customizados
- Upload de logos retorna URLs via API
- README atualizado com changelog v1.4 completo
