More auth debug

app.py

@@ -44,7 +44,10 @@ def auth(req: Request):
     # DEBUG
     print(f"[AUTH] client_key={auth_header[:15]}..., MASTER={MASTER_API_KEY[:15]}..., API_KEYS_COUNT={len(API_KEYS)}")
     # Accept if: (1) it's a valid backend key OR (2) it's master key
-    if auth_header not in API_KEYS and auth_header != MASTER_API_KEY:
+    in_keys = auth_header in API_KEYS
+    in_master = auth_header == MASTER_API_KEY
+    print(f"[AUTH] header={auth_header[:8]}..., in_keys={in_keys}, in_master={in_master}")
+    if not in_keys and not in_master:
         raise HTTPException(401, "Unauthorized")
 
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