feat: 添加模型 1M 上下文切换

src/keybindings/defaultBindings.ts

@@ -322,6 +322,7 @@ export const DEFAULT_BINDINGS: KeybindingBlock[] = [
     bindings: {
       left: 'modelPicker:decreaseEffort',
       right: 'modelPicker:increaseEffort',
+      space: 'modelPicker:toggle1M',
     },
   },
   // Select component navigation (used by /model, /resume, permission prompts, etc.)

src/keybindings/schema.ts

@@ -153,6 +153,7 @@ export const KEYBINDING_ACTIONS = [
   // Model picker actions (ant-only)
   'modelPicker:decreaseEffort',
   'modelPicker:increaseEffort',
+  'modelPicker:toggle1M',
   // Select component actions (distinct from confirm: to avoid collisions)
   'select:next',
   'select:previous',