Ho Ngoc Hai 66f952a4a8 feat(ai-services): complete AVM v2 ensemble — upload endpoint, per-district metrics, A/B routing ...

- Add POST /avm/v2/upload-training-data so AvmRetrainCronService can push
  CSV rows before triggering retraining (was called but missing)
- Add per-district MAE/MAPE/RMSE/R² to _evaluate_ensemble output;
  district_metrics are now returned in AVMv2TrainResponse and stored
  separately from global metrics in the model registry
- Add predict_with_ab() that applies the active model's ab_test_traffic_pct
  for deterministic per-property cohort assignment (v2 vs heuristic baseline)
- Add POST /avm/v2/ab-config to set traffic_pct on the active registry entry
- Add AVMv2ABConfigRequest schema
- Expand test suite: 24 → 28 tests covering upload, A/B config, and new
  validation paths; all green

Co-Authored-By: Paperclip <noreply@paperclip.ing>

2026-04-21 04:39:57 +07:00

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