[DRAFT - DO NOT MERGE] CI smoke test: standalone-update Windows fix

packages/cli/package.json

@@ -77,6 +77,7 @@
     "string-width": "^7.1.0",
     "strip-ansi": "^7.1.0",
     "strip-json-comments": "^3.1.1",
+    "tar": "^7.5.2",
     "undici": "^6.22.0",
     "update-notifier": "^7.3.1",
     "wrap-ansi": "^10.0.0",

packages/cli/src/i18n/locales/en.js

@@ -1898,6 +1898,18 @@ export default {
   'Open the memory manager.': 'Open the memory manager.',
   'Show current process memory diagnostics':
     'Show current process memory diagnostics',
+  'Roll back a standalone update to the previous version':
+    'Roll back a standalone update to the previous version',
+  'Rollback is not available in ACP mode.':
+    'Rollback is not available in ACP mode.',
+  'Rollback is only available for standalone installations.':
+    'Rollback is only available for standalone installations.',
+  'Rollback successful. Restart your terminal to use the previous version.':
+    'Rollback successful. Restart your terminal to use the previous version.',
+  'Rollback failed: no previous version found (.old directory missing).':
+    'Rollback failed: no previous version found (.old directory missing).',
+  'Rollback on Windows requires manual intervention. Rename qwen-code.old to qwen-code in your installation directory.':
+    'Rollback on Windows requires manual intervention. Rename qwen-code.old to qwen-code in your installation directory.',
   'Save a durable memory to the memory system.':
     'Save a durable memory to the memory system.',
   'Ask a quick side question without affecting the main conversation':

packages/cli/src/i18n/locales/zh-TW.js

@@ -1485,6 +1485,17 @@ export default {
   // === Core: added from PR #3328 ===
   'Open the memory manager.': '打開記憶管理器。',
   'Show current process memory diagnostics': '顯示目前程序的內存診斷。',
+  'Roll back a standalone update to the previous version':
+    '將獨立安裝回滾到上一個版本',
+  'Rollback is not available in ACP mode.': '回滾在 ACP 模式下不可用。',
+  'Rollback is only available for standalone installations.':
+    '回滾僅適用於獨立安裝。',
+  'Rollback successful. Restart your terminal to use the previous version.':
+    '回滾成功。請重啟終端以使用上一個版本。',
+  'Rollback failed: no previous version found (.old directory missing).':
+    '回滾失敗：未找到上一個版本（.old 目錄缺失）。',
+  'Rollback on Windows requires manual intervention. Rename qwen-code.old to qwen-code in your installation directory.':
+    '在 Windows 上回滾需要手動操作。請將安裝目錄中的 qwen-code.old 重新命名為 qwen-code。',
   'Save a durable memory to the memory system.': '將持久記憶保存到記憶系統。',
   'Ask a quick side question without affecting the main conversation':
     '在不影響主對話的情況下快速提問旁支問題',

packages/cli/src/i18n/locales/zh.js

@@ -1720,6 +1720,17 @@ export default {
   'Loading suggestions...': '正在加载建议...',
   'Open the memory manager.': '打开记忆管理器。',
   'Show current process memory diagnostics': '显示当前进程的内存诊断。',
+  'Roll back a standalone update to the previous version':
+    '将独立安装回滚到上一个版本',
+  'Rollback is not available in ACP mode.': '回滚在 ACP 模式下不可用。',
+  'Rollback is only available for standalone installations.':
+    '回滚仅适用于独立安装。',
+  'Rollback successful. Restart your terminal to use the previous version.':
+    '回滚成功。请重启终端以使用上一个版本。',
+  'Rollback failed: no previous version found (.old directory missing).':
+    '回滚失败：未找到上一个版本（.old 目录缺失）。',
+  'Rollback on Windows requires manual intervention. Rename qwen-code.old to qwen-code in your installation directory.':
+    '在 Windows 上回滚需要手动操作。请将安装目录中的 qwen-code.old 重命名为 qwen-code。',
   'Save a durable memory to the memory system.':
     '将一条持久记忆保存到记忆系统。',
   'Show per-item context usage breakdown.': '显示按项目划分的上下文使用详情。',

packages/cli/src/ui/commands/doctorCommand.test.ts

@@ -177,10 +177,14 @@ describe('doctorCommand', () => {
   it('should complete memory subcommand names', async () => {
     await expect(doctorCommand.completion!(mockContext, '')).resolves.toEqual([
       'memory',
+      'rollback',
     ]);
     await expect(
       doctorCommand.completion!(mockContext, 'mem'),
     ).resolves.toEqual(['memory']);
+    await expect(
+      doctorCommand.completion!(mockContext, 'roll'),
+    ).resolves.toEqual(['rollback']);
     await expect(doctorCommand.completion!(mockContext, 'x')).resolves.toEqual(
       [],
     );
@@ -1049,6 +1053,8 @@ describe('doctorCommand', () => {
   });
 
   it('should advertise the memory subcommand on the parent doctor argumentHint', () => {
-    expect(doctorCommand.argumentHint).toBe('[memory] [--sample] [--snapshot]');
+    expect(doctorCommand.argumentHint).toBe(
+      '[memory|rollback] [--sample] [--snapshot]',
+    );
   });
 });

packages/cli/src/ui/commands/doctorCommand.ts

@@ -16,6 +16,8 @@ import {
   isHighHeapPressure,
   writeMemoryHeapSnapshot,
 } from '../../utils/memoryDiagnostics.js';
+import { rollbackStandaloneUpdate } from '../../utils/standalone-update.js';
+import { getInstallationInfo } from '../../utils/installationInfo.js';
 import { t } from '../../i18n/index.js';
 import {
   collectMemoryDiagnostics,
@@ -24,7 +26,8 @@ import {
 import { formatMemoryUsage } from '../utils/formatters.js';
 
 const MEMORY_SUBCOMMAND = 'memory';
-const DOCTOR_SUBCOMMANDS = [MEMORY_SUBCOMMAND] as const;
+const ROLLBACK_SUBCOMMAND = 'rollback';
+const DOCTOR_SUBCOMMANDS = [MEMORY_SUBCOMMAND, ROLLBACK_SUBCOMMAND] as const;
 function getHeapSnapshotSensitiveDataWarning(): string {
   return t(
     'Heap snapshot may contain prompts, file contents, tool results, and other sensitive data. Do not share it publicly without reviewing it first.',
@@ -49,12 +52,13 @@ export const doctorCommand: SlashCommand = {
   },
   kind: CommandKind.BUILT_IN,
   supportedModes: ['interactive', 'non_interactive', 'acp'] as const,
-  argumentHint: '[memory] [--sample] [--snapshot]',
+  argumentHint: '[memory|rollback] [--sample] [--snapshot]',
   examples: [
     '/doctor',
     '/doctor memory',
     '/doctor memory --sample',
     '/doctor memory --snapshot',
+    '/doctor rollback',
   ],
   completion: async (_context, partialArg) => {
     const trimmed = partialArg.trimStart();
@@ -71,6 +75,17 @@ export const doctorCommand: SlashCommand = {
     const shouldWriteHeapSnapshot = subCommandArgs.includes('--snapshot');
     const shouldSampleMemory = subCommandArgs.includes('--sample');
 
+    if (subCommand === ROLLBACK_SUBCOMMAND) {
+      if (executionMode === 'acp') {
+        return {
+          type: 'message' as const,
+          messageType: 'error' as const,
+          content: t('Rollback is not available in ACP mode.'),
+        };
+      }
+      return rollbackDoctorAction(context);
+    }
+
     if (subCommand === MEMORY_SUBCOMMAND) {
       if (abortSignal?.aborted) {
         return;
@@ -233,6 +248,15 @@ export const doctorCommand: SlashCommand = {
       argumentHint: '[--json] [--sample] [--snapshot]',
       action: memoryDoctorAction,
     },
+    {
+      name: 'rollback',
+      get description() {
+        return t('Roll back a standalone update to the previous version');
+      },
+      kind: CommandKind.BUILT_IN,
+      supportedModes: ['interactive', 'non_interactive'] as const,
+      action: rollbackDoctorAction,
+    },
   ],
 };
 
@@ -382,3 +406,57 @@ function formatCoreDiagnostics(diagnostics: MemoryDiagnostics): string {
   );
   return lines.join('\n');
 }
+
+function rollbackDoctorAction(context: CommandContext) {
+  const installInfo = getInstallationInfo(process.cwd(), false);
+  if (!installInfo.isStandalone || !installInfo.standaloneDir) {
+    const msg = t('Rollback is only available for standalone installations.');
+    if (context.executionMode === 'interactive') {
+      context.ui.addItem({ type: 'info', text: msg }, Date.now());
+      return;
+    }
+    return {
+      type: 'message' as const,
+      messageType: 'info' as const,
+      content: msg,
+    };
+  }
+
+  if (process.platform === 'win32') {
+    const winMsg = t(
+      'Rollback on Windows requires manual intervention. Rename qwen-code.old to qwen-code in your installation directory.',
+    );
+    if (context.executionMode === 'interactive') {
+      context.ui.addItem({ type: 'info', text: winMsg }, Date.now());
+      return;
+    }
+    return {
+      type: 'message' as const,
+      messageType: 'info' as const,
+      content: winMsg,
+    };
+  }
+
+  const result = rollbackStandaloneUpdate(installInfo.standaloneDir);
+  let msg: string;
+  let messageType: 'info' | 'error';
+  if (result.ok) {
+    msg = t(
+      'Rollback successful. Restart your terminal to use the previous version.',
+    );
+    messageType = 'info';
+  } else {
+    msg = t(`Rollback failed: ${result.detail}`);
+    messageType = 'error';
+  }
+
+  if (context.executionMode === 'interactive') {
+    context.ui.addItem({ type: messageType, text: msg }, Date.now());
+    return;
+  }
+  return {
+    type: 'message' as const,
+    messageType: messageType as 'info' | 'error',
+    content: msg,
+  };
+}