fix: 修复 Config 面板第二次进入时左右键无反应的问题

将左右键枚举值切换从依赖 DOM 焦点的 onKeyDown 改为 useKeybindings 系统，
确保按键在任何焦点状态下都能正确响应。同时修复 isSearchMode 初始值和布局问题。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/components/Settings/Config.tsx

@@ -153,7 +153,7 @@ export function Config({
   const initialLanguage = React.useRef(currentLanguage);
   const [selectedIndex, setSelectedIndex] = useState(0);
   const [scrollOffset, setScrollOffset] = useState(0);
-  const [isSearchMode, setIsSearchMode] = useState(true);
+  const [isSearchMode, setIsSearchMode] = useState(false);
   const isTerminalFocused = useTerminalFocus();
   const { rows } = useTerminalSize();
   // contentHeight is set by Settings.tsx (same value passed to Tabs to fix
@@ -561,24 +561,20 @@ export function Config({
       value: settingsData?.permissions?.defaultMode || 'default',
       options: (() => {
         const priorityOrder: PermissionMode[] = ['default', 'plan'];
-        const allModes: readonly PermissionMode[] = feature('TRANSCRIPT_CLASSIFIER')
-          ? PERMISSION_MODES
-          : EXTERNAL_PERMISSION_MODES;
-        const excluded: PermissionMode[] = ['bypassPermissions'];
-        if (feature('TRANSCRIPT_CLASSIFIER') && !showAutoInDefaultModePicker) {
-          excluded.push('auto');
-        }
-        return [...priorityOrder, ...allModes.filter(m => !priorityOrder.includes(m) && !excluded.includes(m))];
+        return [...priorityOrder, ...PERMISSION_MODES.filter(m => !priorityOrder.includes(m))];
       })(),
       type: 'enum' as const,
       onChange(mode: string) {
         const parsedMode = permissionModeFromString(mode);
-        // Internal modes (e.g. auto) are stored directly
-        const validatedMode = isExternalPermissionMode(parsedMode) ? toExternalPermissionMode(parsedMode) : parsedMode;
+        // auto is an internal-only mode — store it directly, don't convert
+        // to its external mapping ('default') which would make it invisible.
+        const validatedMode = parsedMode === 'auto'
+          ? parsedMode
+          : (isExternalPermissionMode(parsedMode) ? toExternalPermissionMode(parsedMode) : parsedMode);
         const result = updateSettingsForSource('userSettings', {
           permissions: {
             ...settingsData?.permissions,
-            defaultMode: validatedMode as ExternalPermissionMode,
+            defaultMode: validatedMode as (typeof PERMISSION_MODES)[number],
           },
         });
 
@@ -1548,6 +1544,8 @@ export function Config({
       'scroll:lineUp': () => moveSelection(-1),
       'scroll:lineDown': () => moveSelection(1),
       'select:accept': toggleSetting,
+      'select:previousValue': () => toggleSetting(),
+      'select:nextValue': () => toggleSetting(),
       'settings:search': () => {
         setIsSearchMode(true);
         setSearchQuery('');
@@ -1936,13 +1934,13 @@ export function Config({
 
                   return (
                     <React.Fragment key={setting.id}>
-                      <Box>
+                      <Box width="100%">
                         <Box width={44}>
                           <Text color={isSelected ? 'suggestion' : undefined}>
                             {isSelected ? figures.pointer : ' '} {setting.label}
                           </Text>
                         </Box>
-                        <Box key={isSelected ? 'selected' : 'unselected'}>
+                        <Box flexGrow={1}>
                           {setting.type === 'boolean' ? (
                             <>
                               <Text color={isSelected ? 'suggestion' : undefined}>{setting.value.toString()}</Text>

src/keybindings/defaultBindings.ts

@@ -117,6 +117,9 @@ export const DEFAULT_BINDINGS: KeybindingBlock[] = [
       j: 'select:next',
       'ctrl+p': 'select:previous',
       'ctrl+n': 'select:next',
+      // Cycle enum values left/right (same as left/right arrow in handleKeyDown)
+      left: 'select:previousValue',
+      right: 'select:nextValue',
       // Toggle/activate the selected setting (space only — enter saves & closes)
       space: 'select:accept',
       // Save and close the config panel

src/keybindings/schema.ts

@@ -168,6 +168,8 @@ export const KEYBINDING_ACTIONS = [
   'settings:search',
   'settings:retry',
   'settings:close',
+  'select:previousValue',
+  'select:nextValue',
   // Voice actions
   'voice:pushToTalk',
 ] as const