Remove the DailyStatsJob, DailyStat model, and associated database
migrations. This eliminates the pre-aggregation layer and updates the
dashboard handler to remove dependencies on the daily_stats table.
- Add `include_trends` query parameter to enable trend calculation
- Implement trend comparison logic (delta % and direction) against previous periods
- Add support for `last7d`, `last30d`, and `all` time period options
- Update `DashboardSummaryResponse` to include optional `trends` field
- Add helper functions for custom time window aggregation
- Add unit tests for trend calculation and period window logic
- Update feature documentation with new parameters and response schemas
Add new admin API endpoints for dashboard metrics and system-wide
realtime statistics:
- Add /admin/dashboard/summary endpoint with aggregated metrics
including requests, tokens, latency, masters, keys, and provider
keys statistics with time period filtering
- Add /admin/realtime endpoint for system-level realtime stats
aggregated across all masters
- Add status filter parameter to ListAPIKeys endpoint
- Add hour grouping option to log stats aggregation
- Update OpenAPI documentation with new endpoints and schemas
