fix: update default date range for Google Calendar events and improve query parameter handling

surfsense_backend/app/tasks/connector_indexers/google_calendar_indexer.py

@@ -191,10 +191,10 @@ async def index_google_calendar_events(
                 )
             else:
                 calculated_start_date = datetime.now() - timedelta(
-                    days=30
-                )  # Use 30 days as default for calendar events
+                    days=365
+                )  # Use 365 days as default for calendar events (matches frontend)
                 logger.info(
-                    f"No last_indexed_at found, using {calculated_start_date.strftime('%Y-%m-%d')} (30 days ago) as start date"
+                    f"No last_indexed_at found, using {calculated_start_date.strftime('%Y-%m-%d')} (365 days ago) as start date"
                 )
 
             # Use calculated dates if not provided

surfsense_backend/app/utils/document_converters.py

@@ -11,7 +11,13 @@ def get_model_context_window(model_name: str) -> int:
     """Get the total context window size for a model (input + output tokens)."""
     try:
         model_info = get_model_info(model_name)
-        context_window = model_info.get("max_input_tokens", 4096)  # Default fallback
+        context_window = model_info.get("max_input_tokens")
+        # Handle case where key exists but value is None
+        if context_window is None:
+            print(
+                f"Warning: max_input_tokens is None for {model_name}, using default 4096 tokens."
+            )
+            return 4096  # Conservative fallback
         return context_window
     except Exception as e:
         print(