feat: instrument model

backend/routers/instrument_models.py

@@ -44,6 +44,18 @@ class NodeConfigBody(BaseModel):
     macro_key: Optional[str] = None     # "" to clear, None = no-op
 
 
+class NodeScenarioBody(BaseModel):
+    node_id: str
+    label: str
+    horizon: str = "mt"                 # 'ct' | 'mt' | 'lt'
+    target_date: str                    # YYYY-MM-DD
+    target_value: float
+    confidence: float = 0.7            # 0.0 – 1.0
+    trajectory: str = "linear"         # 'step' | 'linear' | 'exp'
+    absorption_days: int = 30
+    notes: Optional[str] = ""
+
+
 class CalibrateBody(BaseModel):
     ref_date: Optional[str] = None
 
@@ -539,6 +551,48 @@ def calibrate_intercept(
         conn.close()
 
 
+@router.get("/{instrument}/scenarios")
+def list_scenarios(instrument: str, node_id: Optional[str] = Query(None)) -> List[Dict[str, Any]]:
+    """Tous les scénarios CT/MT/LT d'un instrument (ou d'un nœud spécifique)."""
+    from services.database import get_conn
+    from services.instrument_models import get_node_scenarios
+    conn = get_conn()
+    try:
+        return get_node_scenarios(conn, instrument.upper(), node_id)
+    finally:
+        conn.close()
+
+
+@router.post("/{instrument}/scenarios")
+def create_scenario(instrument: str, body: NodeScenarioBody) -> Dict[str, Any]:
+    """Crée un scénario forecast sur un nœud."""
+    from services.database import get_conn
+    from services.instrument_models import add_node_scenario
+    conn = get_conn()
+    try:
+        sid = add_node_scenario(
+            conn, instrument.upper(), body.node_id, body.label,
+            body.horizon, body.target_date, body.target_value,
+            body.confidence, body.trajectory, body.absorption_days, body.notes or "",
+        )
+        return {"ok": True, "id": sid, "node_id": body.node_id}
+    finally:
+        conn.close()
+
+
+@router.delete("/{instrument}/scenarios/{scenario_id}")
+def remove_scenario(instrument: str, scenario_id: int) -> Dict[str, Any]:
+    """Supprime un scénario forecast."""
+    from services.database import get_conn
+    from services.instrument_models import delete_node_scenario
+    conn = get_conn()
+    try:
+        delete_node_scenario(conn, scenario_id)
+        return {"ok": True, "id": scenario_id}
+    finally:
+        conn.close()
+
+
 @router.patch("/{instrument}/nodes/{node_id}")
 def update_node_config(
     instrument: str,