Add deterministic server-side chapter detection for starts, flag periods, pit phases, decisive top-five swings, and finishes, then expose chapters on the race-hub payload.
Spike result: race-hub already loads race control, positions, and laps in one read model. The requested Detect signature does not include pit stops, so pit phases use IsPitOutLap clusters as the local deterministic pit-stop proxy.
- GetChampionshipInputs now sums Race + Sprint sessions per meeting
- Bahrain 1282 / Saudi 1283 cancelled (Force Majeure) - intentional Round 9/24
- 2026 sprints up to British GP: 11240 Chinese, 11275 Miami, 11286 Canadian, 11321 British
Totals ANT +21, RUS +26, HAM +18 etc.
- Adds regression test TestGetChampionshipInputsIncludesSprintPoints (25+8=33)
- Fixes#57
