- Idempotent hourly rollup (run_rollup, INSERT ... ON CONFLICT DO UPDATE into
analytics_rollups_hourly) + Tokio background task (startup then hourly)
- GET /v1/cards/{id}/analytics/geo — country-grouped visit counts
- GeoResolver trait: real MaxMind under the `geoip` feature, no-op default;
raw IP resolved then discarded (only hash + coarse country/city persisted)
- analytics_events now store country/city; rollups read query for the dashboard
2 new tests (geo grouping, rollup aggregation + idempotency); 75 backend tests.
fmt + clippy clean; geoip feature compiles.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>