feat: 添加 RSS 内存指示器并解绑 auto 权限模式与 TRANSCRIPT_CLASSIFIER

- 在 REPL 底栏添加 RSS 内存使用显示，512MB 以下 dimColor，512MB-1GB warning 色，1GB 以上 error 色
- auto 权限模式不再依赖 TRANSCRIPT_CLASSIFIER feature flag，classifier 不可用时 fallback 到 prompting
- Config 面板 defaultPermissionMode 使用类型安全的 permissionModeFromString，显示改用 shortTitle
- bypassPermissions title 缩短为 Bypass 与 shortTitle 一致

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

src/components/PromptInput/PromptInputFooterLeftSide.tsx

@@ -42,7 +42,7 @@ import { usePrStatus } from '../../hooks/usePrStatus.js'
 import { Byline, KeyboardShortcutHint } from '@anthropic/ink'
 import { useTerminalSize } from '../../hooks/useTerminalSize.js'
 import { useTasksV2 } from '../../hooks/useTasksV2.js'
-import { formatDuration } from '../../utils/format.js'
+import { formatDuration, formatFileSize } from '../../utils/format.js'
 import { VoiceWarmupHint } from './VoiceIndicator.js'
 import { useVoiceEnabled } from '../../hooks/useVoiceEnabled.js'
 import { useVoiceState } from '../../context/voice.js'
@@ -63,6 +63,26 @@ const NO_OP_SUBSCRIBE = (_cb: () => void) => () => {}
 const NULL = () => null
 const MAX_VOICE_HINT_SHOWS = 3
 
+const RSS_UPDATE_INTERVAL_MS = 5_000
+
+type RssState = { text: string; level: 'normal' | 'warning' | 'error' }
+
+function useRssDisplay(): RssState | null {
+  const [state, setState] = useState<RssState | null>(null)
+  useEffect(() => {
+    function update(): void {
+      const mb = process.memoryUsage().rss / (1024 * 1024)
+      const level = mb >= 1024 ? 'error' : mb >= 512 ? 'warning' : 'normal'
+      const text = formatFileSize(mb * 1024 * 1024)
+      setState(prev => (prev?.text === text ? prev : { text, level }))
+    }
+    update()
+    const timer = setInterval(update, RSS_UPDATE_INTERVAL_MS)
+    return () => clearInterval(timer)
+  }, [])
+  return state
+}
+
 type Props = {
   exitMessage: {
     show: boolean
@@ -315,6 +335,7 @@ function ModeIndicator({
   const isKillAgentsConfirmShowing = useAppState(
     s => s.notifications.current?.key === 'kill-agents-confirm',
   )
+  const rssState = useRssDisplay()
 
   // Derive team info from teamContext (no filesystem I/O needed)
   // Match the same logic as TeamStatus to avoid trailing separator
@@ -428,6 +449,18 @@ function ModeIndicator({
           />,
         ]
       : []),
+    // RSS memory indicator — always visible
+    ...(rssState
+      ? [
+          <Text
+            key="rss"
+            dimColor={rssState.level === 'normal'}
+            color={rssState.level === 'error' ? 'error' : rssState.level === 'warning' ? 'warning' : undefined}
+          >
+            {rssState.text}
+          </Text>,
+        ]
+      : []),
   ]
 
   // Check if any in-process teammates exist (for hint text cycling)

src/components/Settings/Config.tsx

@@ -16,6 +16,7 @@ import {
 import chalk from 'chalk';
 import {
   permissionModeTitle,
+  permissionModeShortTitle,
   permissionModeFromString,
   toExternalPermissionMode,
   isExternalPermissionMode,
@@ -167,6 +168,9 @@ export function Config({
   const thinkingEnabled = useAppState(s => s.thinkingEnabled);
   const isFastMode = useAppState(s => (isFastModeEnabled() ? s.fastMode : false));
   const promptSuggestionEnabled = useAppState(s => s.promptSuggestionEnabled);
+  const currentDefaultPermissionMode = permissionModeFromString(
+    settingsData?.permissions?.defaultMode ?? 'default',
+  );
   // Show auto in the default-mode dropdown when the user has opted in OR the
   // config is fully 'enabled' — even if currently circuit-broken ('disabled'),
   // an opted-in user should still see it in settings (it's a temporary state).
@@ -558,7 +562,7 @@ export function Config({
     {
       id: 'defaultPermissionMode',
       label: 'Default permission mode',
-      value: settingsData?.permissions?.defaultMode || 'default',
+      value: currentDefaultPermissionMode,
       options: (() => {
         const priorityOrder: PermissionMode[] = ['default', 'plan'];
         return [...priorityOrder, ...PERMISSION_MODES.filter(m => !priorityOrder.includes(m))];
@@ -1961,7 +1965,7 @@ export function Config({
                             </Text>
                           ) : setting.id === 'defaultPermissionMode' ? (
                             <Text color={isSelected ? 'suggestion' : undefined}>
-                              {permissionModeTitle(setting.value as PermissionMode)}
+                              {permissionModeShortTitle(setting.value as PermissionMode)}
                             </Text>
                           ) : setting.id === 'autoUpdatesChannel' && autoUpdaterDisabledReason ? (
                             <Box flexDirection="column">

src/types/permissions.ts

@@ -30,9 +30,11 @@ export type PermissionMode = InternalPermissionMode
 
 // Runtime validation set: modes that are user-addressable (settings.json
 // defaultMode, --permission-mode CLI flag, conversation recovery).
+// 'auto' is always available — when TRANSCRIPT_CLASSIFIER is off, the
+// classifier is unavailable and auto mode falls back to prompting.
 export const INTERNAL_PERMISSION_MODES = [
   ...EXTERNAL_PERMISSION_MODES,
-  ...(feature('TRANSCRIPT_CLASSIFIER') ? (['auto'] as const) : ([] as const)),
+  'auto' as const,
 ] as const satisfies readonly PermissionMode[]
 
 export const PERMISSION_MODES = INTERNAL_PERMISSION_MODES

src/utils/permissions/PermissionMode.ts

@@ -64,7 +64,7 @@ const PERMISSION_MODE_CONFIG: Partial<
     external: 'acceptEdits',
   },
   bypassPermissions: {
-    title: 'Bypass Permissions',
+    title: 'Bypass',
     shortTitle: 'Bypass',
     symbol: '⏵⏵',
     color: 'error',
@@ -77,17 +77,13 @@ const PERMISSION_MODE_CONFIG: Partial<
     color: 'error',
     external: 'dontAsk',
   },
-  ...(feature('TRANSCRIPT_CLASSIFIER')
-    ? {
-        auto: {
-          title: 'Auto mode',
-          shortTitle: 'Auto',
-          symbol: '⏵⏵',
-          color: 'warning' as ModeColorKey,
-          external: 'default' as ExternalPermissionMode,
-        },
-      }
-    : {}),
+  auto: {
+    title: 'Auto',
+    shortTitle: 'Auto',
+    symbol: '⏵⏵',
+    color: 'warning' as ModeColorKey,
+    external: 'default' as ExternalPermissionMode,
+  },
 }
 
 /**

src/utils/settings/types.ts

@@ -57,11 +57,7 @@ export const PermissionsSchema = lazySchema(() =>
           'List of permission rules that should always prompt for confirmation',
         ),
       defaultMode: z
-        .enum(
-          feature('TRANSCRIPT_CLASSIFIER')
-            ? PERMISSION_MODES
-            : EXTERNAL_PERMISSION_MODES,
-        )
+        .enum(PERMISSION_MODES)
         .optional()
         .describe('Default permission mode when Claude Code needs access'),
       disableBypassPermissionsMode: z