Expand React race hub analytics

documentations/refactor/cursor-phase-7-analytics-data-foundation-prompt.md

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+# Cursor Prompt: Phase 7 Analytics Data Foundation
+
+You are working in the `box-box` repository.
+
+Phase 6 added React Race Hub analytics tabs, but Strategy and Position Evolution
+still show honest missing states because the backend does not expose stints or
+position samples in `/api/v1/race-hub`.
+
+Your task is Phase 7: expand the local-first backend data foundation for Race
+Hub analytics.
+
+## Read First
+
+- `CLAUDE.md`
+- `documentations/refactor/15-phase-7-analytics-data-foundation.md`
+- `internal/store/*`
+- `internal/ingest/*`
+- `internal/query/racehub.go`
+- `internal/api/openf1.go`
+- `internal/models/types.go`
+- `frontend/src/components/StrategyView.tsx`
+- `frontend/src/components/PositionEvolutionView.tsx`
+
+## Goal
+
+Add backend support for the datasets needed by strategy and position views,
+prioritizing stints and positions.
+
+## Required Work
+
+1. Add a new SQLite migration for selected analytics tables.
+2. Add store structs, upserts, and reads.
+3. Extend session ingestion to fetch and store:
+   - stints;
+   - pit stops if straightforward;
+   - positions if volume is acceptable;
+   - race control and weather if scoped cleanly.
+4. Store raw payloads for every fetched endpoint.
+5. Extend `internal/query.RaceHub` with available analytics datasets.
+6. Update dataset metadata counts.
+7. Add offline tests with fake OpenF1 source data.
+
+## Guardrails
+
+- Do not fake frontend data.
+- Do not fetch OpenF1 from React.
+- Do not add high-volume car telemetry.
+- Keep migrations idempotent.
+- Keep existing Phase 5/6 React behavior working.
+
+## Verification
+
+Run:
+
+```bash
+go test ./internal/store/... ./internal/ingest/... ./internal/query/... ./internal/web/...
+go build -o /tmp/box-box ./cmd/main.go
+cd frontend && npm test -- --run && npm run build
+```
+
+If `go test ./...` fails only on OpenF1 network integration tests, report it as
+unrelated.
+
+## Final Response
+
+Report:
+
+- tables added;
+- datasets ingested;
+- Race Hub API fields added;
+- tests/builds run;
+- whether frontend Strategy/Position tabs now have real data available.