- migrations/0011_season_history.sql: persist one row per completed season
- models/season.rs: SeasonHistoryEntry struct; public SEASON_LENGTH /
PROMOTION_PTS / RELEGATION_PTS consts; pts_above_safe, can_be_relegated,
promotion_achievable helpers
- services/season.rs: write history entry on season rollover; get_history()
returns last 20 seasons newest-first
- routes/division.rs: GET /division now includes promotion_pts, relegation_pts,
season_length, pts_above_safe, promotion_achievable, can_be_relegated;
new GET /division/history endpoint
- 3 new integration tests: history empty, history records after promotion,
division response has zone fields
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
funman300