feat: instrument analysis

backend/routers/instruments.py

@@ -15,11 +15,16 @@ from services.instrument_service import (
     get_snapshot,
     get_narrative,
     update_instrument_drivers,
+    update_instrument_saxo_link,
 )
 
 class DriverUpdate(BaseModel):
     drivers: List[Dict[str, Any]]
 
+
+class SaxoLinkBody(BaseModel):
+    saxo_symbol: Optional[str] = None
+
 router = APIRouter(prefix="/api/instruments", tags=["instruments"])
 
 
@@ -90,6 +95,25 @@ def update_drivers(instrument_id: str, body: DriverUpdate) -> Dict[str, Any]:
     return {"ok": True, "instrument_id": instrument_id.upper(), "drivers_count": len(body.drivers)}
 
 
+@router.put("/{instrument_id}/saxo-link")
+def set_saxo_link(instrument_id: str, body: SaxoLinkBody) -> Dict[str, Any]:
+    """Link this instrument to the Saxo symbol used to price it (chart, indicators, regime,
+    wavelets) instead of yfinance — or pass null to unlink. Mirrors
+    routers/instruments_watchlist.py's /{ticker}/saxo-quote-link, but persisted in
+    instruments.json (this catalog's own store) rather than the instruments_watchlist table."""
+    config = get_instrument(instrument_id)
+    if not config:
+        raise HTTPException(status_code=404, detail=f"Instrument '{instrument_id}' not found")
+
+    saxo_symbol = (body.saxo_symbol or "").strip().upper() or None
+    try:
+        update_instrument_saxo_link(instrument_id, saxo_symbol)
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
+
+    return {"instrument_id": instrument_id.upper(), "saxo_quote_symbol": saxo_symbol}
+
+
 # ── Instrument mult (pips → price conversion) ─────────────────────────────────
 
 _INST_MULT: Dict[str, int] = {"EURUSD": 10000, "GBPUSD": 10000, "USDJPY": 100, "AUDUSD": 10000}