Incremental serving model for 12 coffee-growing locations. Adds:
- Rolling aggregates: precip_sum_7d/30d, temp_mean_30d, temp_anomaly, water_balance_7d
- Gaps-and-islands streak counters: drought_streak_days, heat_streak_days, vpd_streak_days
- Composite crop_stress_index 0–100 (drought 30%, water deficit 25%, heat 20%, VPD 15%, frost 10%)
- lookback 90: ensures rolling windows and streak counters see sufficient history on daily runs
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
