update

main.py

@@ -28,7 +28,7 @@ if not GEMINI_API_KEY:
     raise RuntimeError("GEMINI_API_KEY not set")
 
 IMAGE_MODEL = "gemini-2.5-flash-image"
-IDENTITY_MODEL = "gemini-1.5-flash"  # text/vision model for identity check
+IDENTITY_MODEL = "gemini-1.5-pro"  # multimodal text+vision model for identity check
 
 AUTH_KEY = os.getenv("AIFIT_AUTH_KEY")
 
@@ -86,6 +86,7 @@ def faces_match_strict(original_bytes: bytes, edited_bytes: bytes) -> bool:
     if identity/face has changed. Returns True if it's clearly
     the same person, False otherwise.
     """
+    print(f"[DEBUG] Identity check using model: {IDENTITY_MODEL}")
     try:
         original_part = Part.from_bytes(
             data=original_bytes,