robin 95a8b3940b feat: implement comprehensive credits management system ...

- Database schema:
  * Extended user_credits table with daily_limit, API costs, last_reset_at
  * Created credit_transactions table for full audit trail
  * Added RLS policies for secure access control

- Core services:
  * credit-service.ts - balance checking, deduction, addition, transaction history
  * admin-credit-service.ts - admin controls for managing users and credits

- API integration:
  * Integrated credit checking into discover-whiskybase.ts
  * Credits deducted after successful API calls
  * Insufficient credits error handling

- Admin interface:
  * /admin/users page with user management
  * Statistics dashboard (total users, credits in circulation, usage)
  * Interactive user table with search
  * Edit modal for credit adjustment and settings
  * Per-user daily limits and API cost configuration

- Features:
  * Automatic credit initialization (100 credits for new users)
  * Credit transaction logging with balance_after tracking
  * Admin can add/remove credits with reason
  * Admin can set custom daily limits per user
  * Admin can set custom API costs per user
  * Low credit warnings (< 10 credits)
  * Full transaction history

- User experience:
  * Credits checked before API calls
  * Clear error messages for insufficient credits
  * Graceful handling of credit deduction failures

System is ready for future enhancements like credit packages,
auto-recharge, and payment integration.

2025-12-18 15:02:32 +01:00

13 KiB

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