Update app.py

app.py

@@ -7,6 +7,13 @@ from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import JSONResponse
 
+
+try:
+    import shap
+    SHAP_AVAILABLE = True
+except ImportError:
+    SHAP_AVAILABLE = False
+
 # ----------------- CONFIG -----------------
 MODEL_PATH = os.getenv("MODEL_PATH", "best_model.h5")
 STATS_PATH = os.getenv("STATS_PATH", "means_std.json")