[codex] Fix Windows desktop startup without Git Bash

desktop/src-tauri/capabilities/default.json

@@ -5,7 +5,10 @@
   "windows": ["main"],
   "permissions": [
     "core:default",
+    "core:window:allow-close",
+    "core:window:allow-minimize",
     "core:window:allow-start-dragging",
+    "core:window:allow-toggle-maximize",
     "shell:allow-open",
     {
       "identifier": "shell:allow-execute",

desktop/src-tauri/src/lib.rs

@@ -394,12 +394,6 @@ pub fn run() {
             // 让 adapter 连上动态端口。
             spawn_and_track_adapters_sidecar(&app.handle());
 
-            let _window = app.get_webview_window("main").unwrap();
-
-            // Windows: hide native decorations — frontend renders custom titlebar
-            #[cfg(target_os = "windows")]
-            let _ = _window.set_decorations(false);
-
             Ok(())
         })
         .build(tauri::generate_context!())

desktop/src-tauri/tauri.conf.json

@@ -18,8 +18,6 @@
         "minWidth": 960,
         "minHeight": 640,
         "decorations": true,
-        "titleBarStyle": "Overlay",
-        "hiddenTitle": true,
         "transparent": false,
         "acceptFirstMouse": true
       }

desktop/src-tauri/tauri.macos.conf.json

@@ -0,0 +1,18 @@
+{
+  "app": {
+    "windows": [
+      {
+        "title": "Claude Code Haha",
+        "width": 1440,
+        "height": 960,
+        "minWidth": 960,
+        "minHeight": 640,
+        "decorations": true,
+        "titleBarStyle": "Overlay",
+        "hiddenTitle": true,
+        "transparent": false,
+        "acceptFirstMouse": true
+      }
+    ]
+  }
+}

desktop/src-tauri/tauri.windows.conf.json

@@ -0,0 +1,16 @@
+{
+  "app": {
+    "windows": [
+      {
+        "title": "Claude Code Haha",
+        "width": 1440,
+        "height": 960,
+        "minWidth": 960,
+        "minHeight": 640,
+        "decorations": false,
+        "transparent": false,
+        "acceptFirstMouse": true
+      }
+    ]
+  }
+}

desktop/src/components/chat/MessageList.test.tsx

@@ -281,4 +281,32 @@ describe('MessageList nested tool calls', () => {
       '先看 CLI 和服务端入口。\n再看 desktop 前后端边界。'
     )
   })
+
+  it('shows raw startup details under translated CLI startup errors', () => {
+    useChatStore.setState({
+      sessions: {
+        [ACTIVE_TAB]: makeSessionState({
+          messages: [
+            {
+              id: 'error-1',
+              type: 'error',
+              code: 'CLI_START_FAILED',
+              message:
+                'CLI exited during startup (code 1): Claude Code on Windows requires git-bash (https://git-scm.com/downloads/win).',
+              timestamp: 1,
+            },
+          ],
+        }),
+      },
+    })
+
+    render(<MessageList />)
+
+    expect(screen.getByText('Failed to start CLI process.')).toBeTruthy()
+    expect(
+      screen.getByText(
+        'CLI exited during startup (code 1): Claude Code on Windows requires git-bash (https://git-scm.com/downloads/win).',
+      ),
+    ).toBeTruthy()
+  })
 })

desktop/src/components/chat/MessageList.tsx

@@ -222,9 +222,18 @@ export const MessageBlock = memo(function MessageBlock({
       const errorKey = message.code ? `error.${message.code}` as TranslationKey : null
       const errorText = errorKey ? t(errorKey) : null
       const displayMessage = (errorText && errorText !== errorKey) ? errorText : message.message
+      const showRawDetail =
+        Boolean(message.message) &&
+        message.message.trim() !== '' &&
+        message.message !== displayMessage
       return (
         <div className="mb-3 px-4 py-2.5 rounded-lg bg-red-50 border border-red-200 text-sm text-[var(--color-error)]">
           <strong>Error:</strong> {displayMessage}
+          {showRawDetail && (
+            <div className="mt-1 whitespace-pre-wrap text-xs text-red-700/85">
+              {message.message}
+            </div>
+          )}
         </div>
       )
     }

desktop/src/components/layout/WindowControls.test.tsx

@@ -0,0 +1,69 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { fireEvent, render, screen, waitFor } from '@testing-library/react'
+import '@testing-library/jest-dom'
+
+const minimize = vi.fn().mockResolvedValue(undefined)
+const toggleMaximize = vi.fn().mockResolvedValue(undefined)
+const close = vi.fn().mockResolvedValue(undefined)
+const isMaximized = vi.fn().mockResolvedValue(false)
+const onResized = vi.fn().mockResolvedValue(() => {})
+
+vi.mock('@tauri-apps/api/window', () => ({
+  getCurrentWindow: () => ({
+    minimize,
+    toggleMaximize,
+    close,
+    isMaximized,
+    onResized,
+  }),
+}))
+
+describe('WindowControls', () => {
+  const originalPlatform = navigator.platform
+
+  beforeEach(async () => {
+    minimize.mockClear()
+    toggleMaximize.mockClear()
+    close.mockClear()
+    isMaximized.mockClear()
+    onResized.mockClear()
+
+    Object.defineProperty(window, '__TAURI_INTERNALS__', {
+      configurable: true,
+      value: {},
+    })
+    Object.defineProperty(navigator, 'platform', {
+      configurable: true,
+      value: 'Win32',
+    })
+    vi.resetModules()
+  })
+
+  afterEach(() => {
+    Reflect.deleteProperty(window, '__TAURI_INTERNALS__')
+    Object.defineProperty(navigator, 'platform', {
+      configurable: true,
+      value: originalPlatform,
+    })
+  })
+
+  it('invokes Tauri window APIs for custom controls on Windows', async () => {
+    const { WindowControls } = await import('./WindowControls')
+
+    render(<WindowControls />)
+
+    await waitFor(() => {
+      expect(screen.getByRole('button', { name: 'Minimize window' })).toBeInTheDocument()
+    })
+
+    fireEvent.click(screen.getByRole('button', { name: 'Minimize window' }))
+    fireEvent.click(screen.getByRole('button', { name: 'Maximize window' }))
+    fireEvent.click(screen.getByRole('button', { name: 'Close window' }))
+
+    await waitFor(() => {
+      expect(minimize).toHaveBeenCalledTimes(1)
+      expect(toggleMaximize).toHaveBeenCalledTimes(1)
+      expect(close).toHaveBeenCalledTimes(1)
+    })
+  })
+})

desktop/src/components/layout/WindowControls.tsx

@@ -34,13 +34,20 @@ export function WindowControls() {
     return () => { unlisten?.() }
   }, [])
 
+  const runWindowAction = (action: () => Promise<void>) => {
+    void action().catch((error) => {
+      console.error('Window control action failed', error)
+    })
+  }
+
   if (!showWindowControls || !win) return null
 
   return (
     <div className="flex items-stretch flex-shrink-0 -my-px">
       {/* Minimize */}
       <button
-        onClick={() => win.minimize()}
+        onClick={() => runWindowAction(() => win.minimize())}
+        aria-label="Minimize window"
         className="w-[46px] h-full flex items-center justify-center text-[var(--color-text-secondary)] hover:bg-[var(--color-surface-hover)] transition-colors"
       >
         <svg width="10" height="1" viewBox="0 0 10 1">
@@ -50,7 +57,8 @@ export function WindowControls() {
 
       {/* Maximize / Restore */}
       <button
-        onClick={() => win.toggleMaximize()}
+        onClick={() => runWindowAction(() => win.toggleMaximize())}
+        aria-label={maximized ? 'Restore window' : 'Maximize window'}
         className="w-[46px] h-full flex items-center justify-center text-[var(--color-text-secondary)] hover:bg-[var(--color-surface-hover)] transition-colors"
       >
         {maximized ? (
@@ -67,7 +75,8 @@ export function WindowControls() {
 
       {/* Close */}
       <button
-        onClick={() => win.close()}
+        onClick={() => runWindowAction(() => win.close())}
+        aria-label="Close window"
         className="w-[46px] h-full flex items-center justify-center text-[var(--color-text-secondary)] hover:bg-[#e81123] hover:text-white transition-colors"
       >
         <svg width="10" height="10" viewBox="0 0 10 10" fill="none" stroke="currentColor" strokeWidth="1.2">

src/utils/hooks.ts

@@ -17,7 +17,10 @@ import {
 } from './sessionEnvironment.js'
 import { subprocessEnv } from './subprocessEnv.js'
 import { getPlatform } from './platform.js'
-import { findGitBashPath, windowsPathToPosixPath } from './windowsPaths.js'
+import {
+  tryFindGitBashPath,
+  windowsPathToPosixPath,
+} from './windowsPaths.js'
 import { getCachedPowerShellPath } from './shell/powershellDetection.js'
 import { DEFAULT_HOOK_SHELL } from './shell/shellProvider.js'
 import { buildPowerShellArgs } from './shell/powershellProvider.js'
@@ -787,9 +790,20 @@ async function execCommandHook(
   // PowerShell path deliberately skips the Windows-specific bash
   // accommodations (cygpath conversion, .sh auto-prepend, POSIX-quoted
   // SHELL_PREFIX).
-  const shellType = hook.shell ?? DEFAULT_HOOK_SHELL
+  let shellType = hook.shell ?? DEFAULT_HOOK_SHELL
+
+  if (isWindows && !hook.shell && shellType === 'bash' && !tryFindGitBashPath()) {
+    const pwshPath = await getCachedPowerShellPath()
+    if (pwshPath) {
+      shellType = 'powershell'
+      logForDebugging(
+        `Hooks: Git Bash unavailable on Windows, falling back to PowerShell for default shell on hook "${hook.command}"`,
+        { level: 'warn' },
+      )
+    }
+  }
 
-  const isPowerShell = shellType === 'powershell'
+  const usesPowerShell = shellType === 'powershell'
 
   // --
   // Windows bash path: hooks run via Git Bash (Cygwin), NOT cmd.exe.
@@ -806,7 +820,7 @@ async function execCommandHook(
   // PowerShell expects Windows paths on Windows (and native paths on
   // Unix where pwsh is also available).
   const toHookPath =
-    isWindows && !isPowerShell
+    isWindows && !usesPowerShell
       ? (p: string) => windowsPathToPosixPath(p)
       : (p: string) => p
 
@@ -859,7 +873,7 @@ async function execCommandHook(
   // On Windows (bash only), auto-prepend `bash` for .sh scripts so they
   // execute instead of opening in the default file handler. PowerShell
   // runs .ps1 files natively — no prepend needed.
-  if (isWindows && !isPowerShell && command.trim().match(/\.sh(\s|$|")/)) {
+  if (isWindows && !usesPowerShell && command.trim().match(/\.sh(\s|$|")/)) {
     if (!command.trim().startsWith('bash ')) {
       command = `bash ${command}`
     }
@@ -870,7 +884,7 @@ async function execCommandHook(
   // PowerShell — see design §8.1. For now PS hooks ignore the prefix;
   // a CLAUDE_CODE_PS_SHELL_PREFIX (or shell-aware prefix) is a follow-up.
   const finalCommand =
-    !isPowerShell && process.env.CLAUDE_CODE_SHELL_PREFIX
+    !usesPowerShell && process.env.CLAUDE_CODE_SHELL_PREFIX
       ? formatShellPrefixCommand(process.env.CLAUDE_CODE_SHELL_PREFIX, command)
       : command
 
@@ -915,7 +929,7 @@ async function execCommandHook(
   // Skip for PS — consistent with how .sh prepend and SHELL_PREFIX are
   // already bash-only above.
   if (
-    !isPowerShell &&
+    !usesPowerShell &&
     (hookEvent === 'SessionStart' ||
       hookEvent === 'Setup' ||
       hookEvent === 'CwdChanged' ||
@@ -948,12 +962,9 @@ async function execCommandHook(
   //   skips user profile scripts (faster, deterministic).
   //   -NonInteractive fails fast instead of prompting.
   //
-  // The Git Bash hard-exit in findGitBashPath() is still in place for
-  // bash hooks. PowerShell hooks never call it, so a Windows user with
-  // only pwsh and shell: 'powershell' on every hook could in theory run
-  // without Git Bash — but init.ts still calls setShellIfWindows() on
-  // startup, which will exit first. Relaxing that is phase 1 of the
-  // design's implementation order (separate PR).
+  // On Windows, default-shell hooks now degrade to PowerShell when Git Bash
+  // is unavailable. Explicit bash hooks still surface an actionable error,
+  // but they no longer hard-exit the entire process.
   let child: ChildProcessWithoutNullStreams
   if (shellType === 'powershell') {
     const pwshPath = await getCachedPowerShellPath()
@@ -973,7 +984,14 @@ async function execCommandHook(
   } else {
     // On Windows, use Git Bash explicitly (cmd.exe can't run bash syntax).
     // On other platforms, shell: true uses /bin/sh.
-    const shell = isWindows ? findGitBashPath() : true
+    const shell = isWindows
+      ? tryFindGitBashPath() ??
+        (() => {
+          throw new Error(
+            'Git Bash is required to run bash hooks on Windows. Install Git for Windows or configure the hook with shell: "powershell".',
+          )
+        })()
+      : true
     child = spawn(finalCommand, [], {
       env: envVars,
       cwd: safeCwd,