fix: refresh Model Information panel after custom GGUF model loads

Chain .then() after load_btn and retry_btn click handlers to re-trigger
update_settings_on_model_change with updated custom_model_metadata,
so info_output displays actual repo ID, filename, and size.

Also remove duplicate submit_btn.click() registration that was missing
custom_model_state input and could cause argument mismatch.

app.py

@@ -1770,12 +1770,8 @@ def create_interface():
             return temperature, top_p_val, top_k_val, info_text
         
         # Event handlers
-        submit_btn.click(
-            fn=summarize_streaming,
-            inputs=[file_input, model_dropdown, enable_reasoning, max_tokens, temperature_slider, top_p, top_k, language_selector, thread_config_dropdown, custom_threads_slider],
-            outputs=[thinking_output, summary_output, info_output, metrics_state],
-            show_progress="full"
-        )
+        # Note: submit_btn.click is registered below (after custom model loader section)
+        # with the full set of inputs including custom_model_state
         
         # Update settings when model changes
         model_dropdown.change(
@@ -2017,6 +2013,10 @@ def create_interface():
             fn=load_custom_model_selected,
             inputs=[model_search_input, custom_file_dropdown, custom_repo_files],
             outputs=[custom_status, retry_btn, custom_model_state, custom_model_metadata],
+        ).then(
+            fn=update_settings_on_model_change,
+            inputs=[model_dropdown, thread_config_dropdown, custom_threads_slider, custom_model_metadata],
+            outputs=[temperature_slider, top_p, top_k, info_output],
         )
 
         # Retry button - same as load
@@ -2024,6 +2024,10 @@ def create_interface():
             fn=load_custom_model_selected,
             inputs=[model_search_input, custom_file_dropdown, custom_repo_files],
             outputs=[custom_status, retry_btn, custom_model_state, custom_model_metadata],
+        ).then(
+            fn=update_settings_on_model_change,
+            inputs=[model_dropdown, thread_config_dropdown, custom_threads_slider, custom_model_metadata],
+            outputs=[temperature_slider, top_p, top_k, info_output],
         )
 
         # Also update submit button to use custom model state