feat: instrument model

backend/routers/instrument_models.py

@@ -44,6 +44,27 @@ def list_instrument_models():
         conn.close()
 
 
+@router.get("/{instrument}/regime")
+def get_instrument_regime(
+    instrument: str,
+    at_date: Optional[str] = Query(None),
+) -> Dict[str, Any]:
+    """Régime de marché courant pour cet instrument (détecté depuis events actifs)."""
+    from services.database import get_conn
+    from services.instrument_models import _compute_event_by_category, detect_regime
+    from datetime import datetime, date as date_type
+    conn = get_conn()
+    try:
+        try:
+            ref_date = date_type.fromisoformat(at_date) if at_date else datetime.utcnow().date()
+        except ValueError:
+            ref_date = datetime.utcnow().date()
+        ev_by_cat = _compute_event_by_category(conn, instrument.upper(), ref_date)
+        return detect_regime(ev_by_cat)
+    finally:
+        conn.close()
+
+
 @router.get("/{instrument}/timeline")
 def get_instrument_timeline(
     instrument: str,