feat: AI based permission checks

src/app/view/preferences.rs

@@ -126,6 +126,20 @@ impl App {
                         .on_toggle(Message::PreferenceA2uiChanged),
                     "Lets the local model build validated native charts, tables, forms and other interactive chat surfaces. Turning it off removes the A2UI catalog from the system prompt.",
                 ),
+                row![
+                    hint(
+                        text("Default shell permission mode").size(13).width(Length::Fill),
+                        "Heuristic uses the built-in command classifier. AI based asks the local model once before each shell command and prompts when it reports risk.",
+                    ),
+                    pick_list(
+                        &PERMISSION_MODES[..],
+                        Some(self.preference_draft.default_permission_mode),
+                        Message::PreferencePermissionModeChanged,
+                    )
+                    .width(180),
+                ]
+                .spacing(12)
+                .align_y(Alignment::Center),
             ]
             .spacing(10),
         );