Luca Sacchi Ricciardi 16f740f023 feat(stats): T32-T33 implement dashboard and usage endpoints ...

Add statistics router with two endpoints:
- GET /api/stats/dashboard: Aggregated dashboard statistics
  - Query param: days (1-365, default 30)
  - Auth required
  - Returns DashboardResponse

- GET /api/usage: Detailed usage statistics with filtering
  - Required params: start_date, end_date
  - Optional filters: api_key_id, model
  - Pagination: skip, limit (max 1000)
  - Auth required
  - Returns List[UsageStatsResponse]

Also add get_usage_stats() service function for querying
individual usage records with filtering and pagination.

2026-04-07 15:22:31 +02:00

9.8 KiB

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