corrected false positive in abnormal patreon sources.

backend/app/services/gallery_dl.py

@@ -305,7 +305,29 @@ class GalleryDLService:
         """Categorize the error based on output and return code."""
         combined = f"{stdout} {stderr}".lower()
 
-        if "401" in combined or "unauthorized" in combined or "login" in combined:
+        # Check for "no new content" first - skipped files with return code 1 is normal
+        if return_code == 1:
+            # Check if output indicates content was processed (skipped = already downloaded)
+            if "skipping" in combined or "skip" in combined:
+                return ErrorType.NO_NEW_CONTENT, "No new content to download"
+            # Empty output with return code 1 often means nothing to download
+            if not stdout.strip() or "no results" in combined:
+                return ErrorType.NO_NEW_CONTENT, "No new content to download"
+
+        # Auth errors - be more specific to avoid false positives from debug URLs
+        # Look for actual error messages, not just keywords that appear in URLs
+        auth_patterns = [
+            "401",
+            "unauthorized",
+            "login required",
+            "please login",
+            "must be logged in",
+            "authentication required",
+            "session expired",
+            "invalid cookie",
+            "cookies are expired",
+        ]
+        if any(pattern in combined for pattern in auth_patterns):
             return ErrorType.AUTH_ERROR, "Authentication failed - cookies may be expired or invalid"
 
         if "429" in combined or "rate limit" in combined or "too many requests" in combined:
@@ -320,9 +342,6 @@ class GalleryDLService:
         if "403" in combined or "forbidden" in combined or "access denied" in combined:
             return ErrorType.ACCESS_DENIED, "Access denied - may need higher subscription tier"
 
-        if return_code == 1 and ("no" in combined or "skip" in combined or not stdout.strip()):
-            return ErrorType.NO_NEW_CONTENT, "No new content to download"
-
         if "http error" in combined:
             return ErrorType.HTTP_ERROR, "HTTP error occurred"