cleanup

src/core/providers/enhanced_provider.py

@@ -209,6 +209,11 @@ class EnhancedAniWorldLoader(Loader):
                 elif response.status_code == 403:
                     raise NonRetryableError(f"Access forbidden: {url}")
                 elif response.status_code >= 500:
+                    # Log suspicious server errors for monitoring
+                    self.logger.warning(
+                        f"Server error {response.status_code} from {url} "
+                        f"- will retry"
+                    )
                     raise RetryableError(f"Server error {response.status_code}")
                 else:
                     raise RetryableError(f"HTTP error {response.status_code}")
@@ -225,6 +230,18 @@ class EnhancedAniWorldLoader(Loader):
         
         clean_text = response_text.strip()
         
+        # Quick fail for obviously non-JSON responses
+        if not (clean_text.startswith('[') or clean_text.startswith('{')):
+            # Check if it's HTML error page
+            if clean_text.lower().startswith('<!doctype') or \
+               clean_text.lower().startswith('<html'):
+                raise ValueError("Received HTML instead of JSON")
+            # If doesn't start with JSON markers, likely not JSON
+            self.logger.warning(
+                "Response doesn't start with JSON markers, "
+                "attempting parse anyway"
+            )
+        
     # Attempt increasingly permissive parsing strategies to cope with
     # upstream anomalies such as HTML escaping, stray BOM markers, and
     # injected control characters.