test(tui): pin model state in footer and picker tests

crates/tui/src/tui/model_picker.rs

@@ -409,6 +409,7 @@ mod tests {
         // pass-through providers (Ollama, OpenAI) hide the DeepSeek model
         // rows and leave only `auto` + custom — Down has nowhere to go.
         app.model = "deepseek-v4-pro".to_string();
+        app.auto_model = false;
         app.reasoning_effort = ReasoningEffort::Max;
         app.api_provider = crate::config::ApiProvider::Deepseek;
         (app, lock)
@@ -418,6 +419,7 @@ mod tests {
     fn picker_initial_selection_matches_app_state() {
         let (mut app, _lock) = create_test_app();
         app.model = "deepseek-v4-flash".to_string();
+        app.auto_model = false;
         app.reasoning_effort = ReasoningEffort::Max;
         let view = ModelPickerView::new(&app);
         assert_eq!(view.resolved_model(), "deepseek-v4-flash");
@@ -459,6 +461,7 @@ mod tests {
     fn picker_normalizes_low_medium_to_high() {
         let (mut app, _lock) = create_test_app();
         app.reasoning_effort = ReasoningEffort::Medium;
+        app.auto_model = false;
         let view = ModelPickerView::new(&app);
         assert_eq!(
             view.resolved_effort(),
@@ -486,6 +489,7 @@ mod tests {
     fn picker_preserves_unknown_model_via_custom_row() {
         let (mut app, _lock) = create_test_app();
         app.model = "deepseek-v4-pro-2026-04-XX".to_string();
+        app.auto_model = false;
         let view = ModelPickerView::new(&app);
         assert!(view.show_custom_model_row);
         assert_eq!(view.resolved_model(), "deepseek-v4-pro-2026-04-XX");
@@ -533,6 +537,7 @@ mod tests {
     fn enter_emits_apply_event_with_selection() {
         let (mut app, _lock) = create_test_app();
         app.reasoning_effort = ReasoningEffort::High;
+        app.auto_model = false;
         let mut view = ModelPickerView::new(&app);
         view.handle_key(KeyEvent::new(
             KeyCode::Tab,

crates/tui/src/tui/widgets/footer.rs

@@ -668,10 +668,11 @@ mod tests {
             initial_input: None,
         };
         let mut app = App::new(options, &Config::default());
-        // App::new may pick up `default_model` from a local user Settings
-        // file, which overrides the option above. Pin the model explicitly
-        // so these tests are independent of any host-side configuration.
+        // App::new may pick up local Settings, which override the option
+        // above. Pin model state explicitly so these tests are host-neutral.
         app.model = "deepseek-v4-flash".to_string();
+        app.auto_model = false;
+        app.api_provider = crate::config::ApiProvider::Deepseek;
         app
     }