fix: improve model router error handling and add debug logging

- Strip provider prefix from model names before passing to providers (google/gemini-1.5-flash -> gemini-1.5-flash)
- Fix GoogleProvider 404 error to report actual model name instead of hardcoded 'unknown'
- Add debug logging to router and provider to trace model name resolution
- Handle both bare model names and provider/model format in router

backend/app/models/providers/google.py

@@ -277,10 +277,15 @@ class GoogleProvider(BaseProvider):
         **kwargs: Any,
     ) -> CompletionResponse:
         """Generate a completion using Google AI API."""
+        import logging
+        logger = logging.getLogger(__name__)
+        logger.info(f"GoogleProvider.complete called with model={model}")
         await self._acquire_rate_limit()
 
         model = self._resolve_model(model)
+        logger.info(f"GoogleProvider after resolve: model={model}")
         model_info = self.get_model_info(model)
+        logger.info(f"GoogleProvider model_info: {model_info}")
         if not model_info:
             raise ModelNotFoundError(self.PROVIDER_NAME, model)
 
@@ -424,7 +429,15 @@ class GoogleProvider(BaseProvider):
                 message=message,
             )
         elif status == 404:
-            raise ModelNotFoundError(self.PROVIDER_NAME, "unknown")
+            # Extract model name from URL if possible
+            model_name = "unknown"
+            url = str(error.request.url)
+            if "/models/" in url:
+                try:
+                    model_name = url.split("/models/")[1].split(":")[0]
+                except Exception:
+                    pass
+            raise ModelNotFoundError(self.PROVIDER_NAME, model_name)
         else:
             raise ProviderError(message, self.PROVIDER_NAME, status)
 

backend/app/models/router.py

@@ -548,6 +548,7 @@ class SmartModelRouter:
                 # Strip provider prefix if present (e.g., "google/gemini-1.5-flash" -> "gemini-1.5-flash")
                 model_name = model_id.split("/", 1)[1] if "/" in model_id else model_id
                 logger.info(f"Attempting completion with {provider.PROVIDER_NAME}/{model_name}")
+                logger.debug(f"Router: model_id={model_id}, model_name={model_name}, provider={provider.PROVIDER_NAME}")
                 response = await provider.complete(messages, model_name, **kwargs)
 
                 # Track cost

backend/hacker_news.csv

@@ -0,0 +1,31 @@
+title,link,points
+,,914 points
+,,392 points
+,,172 points
+,,541 points
+,,417 points
+,,193 points
+,,197 points
+,,283 points
+,,253 points
+,,8 points
+,,84 points
+,,19 points
+,,703 points
+,,66 points
+,,25 points
+,,280 points
+,,125 points
+,,11 points
+,,148 points
+,,112 points
+,,160 points
+,,52 points
+,,394 points
+,,123 points
+,,103 points
+,,152 points
+,,83 points
+,,105 points
+,,254 points
+,,