feat: cockpit

backend/routers/instruments.py

@@ -72,6 +72,34 @@ async def instrument_snapshot(
     return snapshot
 
 
+@router.get("/{instrument_id}/wavelet-cache")
+def wavelet_cache(instrument_id: str) -> Dict[str, Any]:
+    """Latest full band decomposition for this instrument, from the same per-cycle scan
+    that feeds the Dashboard's Wavelets Signal card (services.wavelet_signals.
+    scan_watchlist_wavelet_signals) — NOT a live recompute. Instrument Analysis's Wavelet
+    tab reads this by default so opening it never triggers its own analysis and always
+    agrees with the Signal card; "Start analyse" is still there for an on-demand live run
+    with custom parameters, which does NOT overwrite this cache.
+
+    Looked up by the Cockpit Watchlist ticker the cache is keyed on, normalized via the
+    same yfinance-suffix stripping instrument_service uses elsewhere (EURUSD=X -> EURUSD)
+    — a quick-added instrument's id already equals its Watchlist ticker verbatim, but a
+    curated one (EURUSD=X) doesn't."""
+    from services.instrument_service import _base_ticker
+    from services.database import get_wavelet_decomposition_cache
+    cached = get_wavelet_decomposition_cache(_base_ticker(instrument_id))
+    if not cached or not cached.get("decomposition"):
+        raise HTTPException(status_code=404, detail=f"Aucune décomposition wavelet en cache pour '{instrument_id}'")
+    return {
+        "computed_at": cached["computed_at"],
+        "method": cached["method"],
+        "wavelet": cached["wavelet"],
+        "num_levels": cached["num_levels"],
+        "lookback_days": cached["lookback_days"],
+        **cached["decomposition"],
+    }
+
+
 @router.post("/{instrument_id}/narrative")
 async def generate_narrative(
     instrument_id: str,