feat: adopt Phase 3 gate and paper-trade exit policy

Production strategy change based on the July 2026 backtest: paper trades now default to a 30-trading-day hold with the initial stop (classic momentum hold-and-rerank), while target and trailing exits remain available in Admin. The exit policy API/UI now carries hold_days and close_reason can be 'time'. The activation confidence floor default is now 0/off because the gate ablation showed it added no per-trade edge while filtering out usable setups. Migration 015 clears stored activation_min_confidence and paper_exit_mode so the new defaults take effect; this intentionally resets Track Record comparability from this deploy. Verification: 451 backend tests pass, ruff check app/ clean, frontend npm run build clean. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-02 15:20:34 +02:00
parent 29a61cb2ca
commit 1e82dfad7f
10 changed files with 224 additions and 43 deletions
@@ -61,7 +61,9 @@ async def write_exit_policy(
    db: AsyncSession = Depends(get_db),
 ) -> APIEnvelope:
    """Change the auto-exit policy (admin)."""
-    data = await paper_trade_service.set_exit_policy(db, mode=body.mode, trailing_pct=body.trailing_pct)
+    data = await paper_trade_service.set_exit_policy(
+        db, mode=body.mode, trailing_pct=body.trailing_pct, hold_days=body.hold_days
+    )
    return APIEnvelope(status="success", data=data)