refine

msr.py

@@ -142,7 +142,7 @@ def download_file(url):
             # 404 means the file doesn't exist in GHArchive - skip without retry
             if e.response.status_code == 404:
                 if attempt == 0:  # Only log once, not for each retry
-                    print(f"   ○ {filename}: Not available (404) - skipping")
+                    print(f"   ⚠ {filename}: Not available (404) - skipping")
                 return False
 
             # Other HTTP errors (5xx, etc.) should be retried