- Redesigned all email templates with professional corporate style
- Created base layout with dark header, status cards, and footer
- Updated: subscription-cancelled, account-activation, welcome, welcome-new-user, due-payments-alert
- Removed emojis and gradients for cleaner look
- Added multi-language support (ES, PT-BR, EN)
- Fixed email delivery (sync instead of queue)
- Fixed PayPal already-cancelled subscription handling
- Cleaned orphan subscriptions from deleted users
- Add UserManagementController@store for creating users
- Add POST /api/admin/users endpoint
- Support user types: Free, Pro, Admin
- Auto-create 100-year subscription for Pro/Admin users
- Add user creation modal to Users.jsx
- Complete SaaS limit testing:
- Free user limits: 1 account, 10 categories, 3 budgets, 100 tx
- Middleware blocks correctly at limits
- Error messages are user-friendly
- Usage stats API working correctly
- Update SAAS_STATUS.md with test results
- Bump version to 1.51.0
