Preserve user-specified model in auto mode retry logic

- Track if user explicitly specified --model before auto mode runs
- Skip retry with alternative models when user's model fails
- Show clear error message explaining user's choice is preserved
- Only auto-selected models can be retried with alternatives

videogen

@@ -3318,6 +3318,11 @@ def main(args):
     if getattr(args, 'auto', False) and not hasattr(args, '_auto_mode'):
         if not args.prompt:
             parser.error("--auto requires --prompt to analyze")
+        
+        # Track if user explicitly specified the model (before auto mode modifies it)
+        # This is used to preserve user's model choice during retry
+        args._user_specified_model = args.model is not None and args.model != (list(MODELS.keys())[0] if MODELS else None)
+        
         args = run_auto_mode(args, MODELS)
         if args is None:
             sys.exit(1)
@@ -3520,7 +3525,15 @@ def main(args):
             max_retries = getattr(args, '_max_retries', 3)
             alternative_models = getattr(args, '_auto_alternative_models', [])
             failed_base_models = getattr(args, '_failed_base_models', set())
-            
+            user_specified_model = getattr(args, '_user_specified_model', False)
+            
+            # If user explicitly specified the model, don't retry with alternatives
+            # The user's model choice should be preserved
+            if user_specified_model:
+                print(f"\n⚠️  User-specified model failed: {model_id_to_load}")
+                print(f"   The model was explicitly provided with --model, not retrying with alternatives.")
+                print(f"   Please verify the model exists or try a different model.")
+            else:
                 # If this was a LoRA with a base model, track the failed base model
                 if is_lora and base_model_id:
                     failed_base_models.add(base_model_id)