diff --git a/docs/usage-guide.md b/docs/usage-guide.md
index daaf1418e..4ed60c0aa 100644
--- a/docs/usage-guide.md
+++ b/docs/usage-guide.md
@@ -1367,6 +1367,8 @@ teamai hooks remove    # Remove
 
 The inject and remove commands only touch tools you actually have installed (i.e. whose `~/.<tool>/` root directory already exists). They never create root directories for tools listed in `toolPaths` but not installed.
 
+On Windows, the built-in hook dispatch commands that shell out through bash (e.g. Claude, Codex, Cursor, Copilot CLI) reference Git Bash by absolute path — standard install locations first, then the `HKLM\SOFTWARE\GitForWindows` registry as fallback — so they never resolve to the WSL `bash.exe` launcher; if Git Bash cannot be found they degrade to bare `bash`.
+
 > **Codex trust gate** — Codex (the OpenAI / ChatGPT Codex app, tool id `codex`) gates non-managed hooks behind an explicit user trust step. After teamai writes `~/.codex/hooks.json`, Codex may skip a newly added or changed hook until you review/trust it in `/hooks` or Settings → Hooks. `teamai hooks inject` and `teamai doctor` print a reminder when Codex hooks are installed; teamai never edits Codex's `[hooks.state]` to auto-trust — trusting is left to you.
 
 ### Team Hooks Declaration
diff --git a/docs/usage-guide.zh-CN.md b/docs/usage-guide.zh-CN.md
index 768e6e33c..9e6d30f8e 100644
--- a/docs/usage-guide.zh-CN.md
+++ b/docs/usage-guide.zh-CN.md
@@ -1327,6 +1327,8 @@ teamai hooks remove    # 移除
 
 inject 和 remove 只会操作你实际已安装的工具（即 `~/.<tool>/` 根目录已存在的工具）。对于 `toolPaths` 中已配置但未安装的工具，命令不会为其凭空创建根目录。
 
+在 Windows 上，经由 bash 执行的内置 hook 派发命令（如 Claude、Codex、Cursor、Copilot CLI）会以绝对路径引用 Git Bash——先查标准安装位置，再回退到 `HKLM\SOFTWARE\GitForWindows` 注册表——从而避免解析到 WSL 的 `bash.exe`；若找不到 Git Bash，则退回裸 `bash`。
+
 > **Codex 信任门槛** — Codex（OpenAI / ChatGPT Codex 应用，工具 id 为 `codex`）对非托管 hooks 设有显式的用户信任机制。teamai 写入 `~/.codex/hooks.json` 后，对于新增或变更的 hook，Codex 可能会跳过执行，直到你在 `/hooks` 或 Settings → Hooks 中 review/trust。当检测到 Codex hooks 已安装时，`teamai hooks inject` 与 `teamai doctor` 会输出提示；teamai 从不修改 Codex 的 `[hooks.state]` 来自动信任 —— 信任操作交由你手动完成。
 
 ### 团队 Hooks 声明
diff --git a/src/__tests__/copilot-adapter.test.ts b/src/__tests__/copilot-adapter.test.ts
index 02fb742d0..f0f41955a 100644
--- a/src/__tests__/copilot-adapter.test.ts
+++ b/src/__tests__/copilot-adapter.test.ts
@@ -9,6 +9,7 @@ import {
   reconcileHooks,
   reconcileTeamHooksForConfig,
 } from '../hooks.js';
+import { _resetShellCache } from '../builtin-hooks.js';
 import { RulesHandler } from '../resources/rules.js';
 import { SkillsHandler } from '../resources/skills.js';
 import { teamRuleToCopilotInstructions } from '../resources/copilot-instructions.js';
@@ -345,4 +346,47 @@ describe('GitHub Copilot adapter', () => {
     await handler.pullItem(missingTeamRule, teamConfig, localConfig('user'));
     expect(await fse.pathExists(destination)).toBe(false);
   });
+
+  describe('Windows Git Bash launcher rendering', () => {
+    let fakeGitRoot: string;
+
+    beforeEach(async () => {
+      // A host may carry a real Git for Windows under ProgramFiles; point every
+      // candidate at the fake tree so the resolved launcher is deterministic.
+      fakeGitRoot = await fse.mkdtemp(path.join(os.tmpdir(), 'teamai-copilot-gitbash-'));
+      const bin = path.join(fakeGitRoot, 'Programs', 'Git', 'bin');
+      await fse.ensureDir(bin);
+      await fse.writeFile(path.join(bin, 'bash.exe'), '');
+      vi.stubEnv('ProgramFiles', path.join(fakeGitRoot, 'missing-pf'));
+      vi.stubEnv('ProgramFiles(x86)', path.join(fakeGitRoot, 'missing-pf86'));
+      vi.stubEnv('LOCALAPPDATA', fakeGitRoot);
+      vi.spyOn(process, 'platform', 'get').mockReturnValue('win32');
+      _resetShellCache();
+    });
+
+    afterEach(async () => {
+      _resetShellCache();
+      vi.restoreAllMocks();
+      await fse.remove(fakeGitRoot);
+    });
+
+    it('renders the powershell field with the call operator when Git Bash is found', async () => {
+      await reconcileTeamHooksForConfig(teamConfig, localConfig('user'));
+      const hookPath = path.join(copilotHome, 'hooks', COPILOT_HOOK_FILE);
+      const first = await fse.readFile(hookPath, 'utf8');
+      await reconcileTeamHooksForConfig(teamConfig, localConfig('user'));
+      const second = await fse.readFile(hookPath, 'utf8');
+      expect(second).toBe(first);
+
+      const parsed = JSON.parse(second) as {
+        hooks: Record<string, Array<{ bash: string; powershell: string; command: string }>>;
+      };
+      const entry = parsed.hooks.SessionStart[0];
+      const bashExe = path.join(fakeGitRoot, 'Programs', 'Git', 'bin', 'bash.exe').split(path.sep).join('/');
+      const dispatch = 'teamai hook-dispatch session-start --tool copilot';
+      expect(entry.bash).toBe(`"${bashExe}" -lc "${dispatch} 2>/dev/null" || true`);
+      expect(entry.powershell).toBe(`& "${bashExe}" -lc "${dispatch} 2>/dev/null"; exit 0`);
+      expect(entry.command).toBe(entry.bash);
+    });
+  });
 });
diff --git a/src/__tests__/hooks-golden.test.ts b/src/__tests__/hooks-golden.test.ts
index 9221516bc..346203d15 100644
--- a/src/__tests__/hooks-golden.test.ts
+++ b/src/__tests__/hooks-golden.test.ts
@@ -13,14 +13,21 @@ import { injectHooks } from '../hooks.js';
 // fixtures/hooks/<tool>.json were captured from the pre-refactor injector.
 // Any refactor of the injection engine MUST keep these byte-identical so that
 // already-installed machines see a zero-diff reconcile after a CLI upgrade.
+//
+// Windows: the dispatch shell resolves a bare `bash` to the WSL launcher, so
+// the injector names Git Bash by absolute path instead — machine-specific, and
+// the Linux-captured fixtures cannot match it. Only the dispatch-command
+// renderers (claude, claude-internal, cursor) skip there; the wrapper
+// renderers (codebuddy, workbuddy) stay machine-independent and keep coverage.
 const fixturesDir = path.resolve(__dirname, 'fixtures', 'hooks');
 
-const cases: Array<[string, string]> = [
-  ['claude', 'settings.json'],
-  ['claude-internal', 'settings.json'],
-  ['codebuddy', 'settings.json'],
-  ['cursor', 'hooks.json'],
-  ['workbuddy', 'settings.json'],
+// true = the command carries the dispatch shell prefix (`getDispatchCommand`).
+const cases: Array<[string, string, boolean]> = [
+  ['claude', 'settings.json', true],
+  ['claude-internal', 'settings.json', true],
+  ['codebuddy', 'settings.json', false],
+  ['cursor', 'hooks.json', true],
+  ['workbuddy', 'settings.json', false],
 ];
 
 describe('hooks golden — built-in output is byte-identical to the captured baseline', () => {
@@ -32,8 +39,8 @@ describe('hooks golden — built-in output is byte-identical to the captured bas
     await fse.remove(tmp);
   });
 
-  for (const [tool, file] of cases) {
-    it(`${tool} output matches golden fixture`, async () => {
+  for (const [tool, file, usesDispatchCommand] of cases) {
+    it.skipIf(process.platform === 'win32' && usesDispatchCommand)(`${tool} output matches golden fixture`, async () => {
       const p = path.join(tmp, tool, file);
       await injectHooks(p, tool);
       const got = await fse.readFile(p, 'utf-8');
diff --git a/src/__tests__/hooks-windows-bash.test.ts b/src/__tests__/hooks-windows-bash.test.ts
new file mode 100644
index 000000000..9adf58115
--- /dev/null
+++ b/src/__tests__/hooks-windows-bash.test.ts
@@ -0,0 +1,116 @@
+import { describe, it, expect, vi, afterEach } from 'vitest';
+import path from 'node:path';
+import fs from 'node:fs';
+import os from 'node:os';
+
+vi.mock('../utils/logger.js', () => ({
+  log: { info: vi.fn(), success: vi.fn(), warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
+}));
+
+// A developer machine may have a real Git for Windows InstallPath in HKLM, so
+// the default registry locator would succeed and defeat the negative case.
+// Replace execFileSync at the module boundary (builtin-hooks imports it as a
+// named binding, which a bare spyOn on the default export cannot intercept);
+// the registry-success path is instead covered by injecting a fake locator.
+vi.mock('node:child_process', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('node:child_process')>();
+  const boom = (() => { throw new Error('registry unreadable'); }) as unknown as typeof actual.execFileSync;
+  return { ...actual, default: actual, execFileSync: boom };
+});
+
+import { getDispatchCommand, findGitBashWindows, _resetShellCache } from '../builtin-hooks.js';
+
+// Windows resolves a bare `bash` to System32's WSL launcher before any PATH
+// entry, and the WSL side has a different $HOME and no npm-global teamai — the
+// hook then dies inside `2>/dev/null || true` with nothing logged. The
+// injector must instead name Git Bash with an absolute path.
+
+function makeFakeGit(root: string, relative: string[] = ['Programs', 'Git']): string {
+  const bin = path.join(root, ...relative, 'bin');
+  fs.mkdirSync(bin, { recursive: true });
+  fs.writeFileSync(path.join(bin, 'bash.exe'), '');
+  return path.join(bin, 'bash.exe');
+}
+
+const noRegistry = () => {
+  throw new Error('unreachable in tests');
+};
+
+describe('findGitBashWindows', () => {
+  it('finds Git under the LOCALAPPDATA candidate', () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'teamai-gitbash-'));
+    const exe = makeFakeGit(root);
+    expect(findGitBashWindows({ LOCALAPPDATA: root }, path.join(root, 'nohome'), noRegistry)).toBe(exe);
+  });
+
+  it('finds Git under the machine-wide ProgramFiles candidate', () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'teamai-gitbash-'));
+    const exe = makeFakeGit(path.join(root, 'PF'), ['Git']);
+    expect(findGitBashWindows({ ProgramFiles: path.join(root, 'PF') }, path.join(root, 'nohome'), noRegistry)).toBe(exe);
+  });
+
+  it('falls back to the registry InstallPath when no candidate exists', () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'teamai-gitbash-'));
+    const exe = makeFakeGit(root, ['Git']);
+    const installDir = path.dirname(path.dirname(exe));
+    const read = () => installDir;
+    expect(
+      findGitBashWindows(
+        { ProgramFiles: path.join(root, 'm1'), 'ProgramFiles(x86)': path.join(root, 'm2'), LOCALAPPDATA: path.join(root, 'm3') },
+        path.join(root, 'nohome'),
+        read,
+      ),
+    ).toBe(exe);
+  });
+
+  it('returns null when neither candidates nor registry find Git', () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'teamai-gitbash-empty-'));
+    expect(
+      findGitBashWindows({ ProgramFiles: root, 'ProgramFiles(x86)': root, LOCALAPPDATA: root }, root, () => null),
+    ).toBeNull();
+  });
+});
+
+describe('getDispatchCommand shell resolution', () => {
+  afterEach(() => {
+    _resetShellCache();
+    vi.unstubAllEnvs();
+    vi.restoreAllMocks();
+  });
+
+  it('POSIX keeps the bare bash form (golden-fixture compatibility)', () => {
+    vi.spyOn(process, 'platform', 'get').mockReturnValue('linux');
+    expect(getDispatchCommand('stop', 'claude')).toBe(
+      'bash -lc "teamai hook-dispatch stop --tool claude 2>/dev/null" || true',
+    );
+  });
+
+  it('Windows names Git Bash by absolute, quoted, forward-slash path', () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'teamai-gitbash-'));
+    const exe = makeFakeGit(root);
+    vi.spyOn(process, 'platform', 'get').mockReturnValue('win32');
+    vi.stubEnv('HOME', root);
+    vi.stubEnv('ProgramFiles', path.join(root, 'missing-pf'));
+    vi.stubEnv('ProgramFiles(x86)', path.join(root, 'missing-pf86'));
+    vi.stubEnv('LOCALAPPDATA', root);
+    const cmd = getDispatchCommand('stop', 'qoder');
+    expect(cmd).toBe(
+      '"' + exe.split(path.sep).join('/') + '" -lc "teamai hook-dispatch stop --tool qoder 2>/dev/null" || true',
+    );
+  });
+
+  it('Windows keeps bare bash when Git Bash cannot be found', () => {
+    const root = fs.mkdtempSync(path.join(os.tmpdir(), 'teamai-gitbash-empty-'));
+    vi.spyOn(process, 'platform', 'get').mockReturnValue('win32');
+    vi.stubEnv('HOME', root);
+    vi.stubEnv('ProgramFiles', root);
+    vi.stubEnv('ProgramFiles(x86)', root);
+    vi.stubEnv('LOCALAPPDATA', root);
+    // No execFileSync stub: the registry probe really runs, and no machine
+    // records InstallPath under a freshly-created temp dir, so the locator
+    // exhausts every source and the command must degrade to bare `bash`.
+    expect(getDispatchCommand('stop', 'claude')).toBe(
+      'bash -lc "teamai hook-dispatch stop --tool claude 2>/dev/null" || true',
+    );
+  });
+});
diff --git a/src/builtin-hooks.ts b/src/builtin-hooks.ts
index 27c214901..f01672c01 100644
--- a/src/builtin-hooks.ts
+++ b/src/builtin-hooks.ts
@@ -1,5 +1,6 @@
 import fs from 'node:fs';
 import path from 'node:path';
+import { execFileSync } from 'node:child_process';
 import { fileURLToPath } from 'node:url';
 import { TEAMAI_HOOK_DESCRIPTION_PREFIX } from './types.js';
 import type { HookDef } from './types.js';
@@ -60,6 +61,7 @@ export function hasShell(): boolean {
 /** Reset the cached shell results. Test-only. */
 export function _resetShellCache(): void {
   _hasShellCache = undefined;
+  _winBashLauncherCache = undefined;
   resetBundledRuntimeCache();
 }
 
@@ -159,11 +161,86 @@ export function skipToolsWithoutShell(tools: string[]): Set<string> {
   return skipped;
 }
 
+/**
+ * Read the machine-wide InstallPath the Git for Windows installer records
+ * in HKLM. Exported so tests stub it at the module boundary instead of
+ * shelling out to a real reg.exe. Returns null on any failure — an
+ * unreadable registry just means "no extra candidate".
+ */
+export function queryGitInstallPath(): string | null {
+  try {
+    const out = execFileSync(
+      'reg.exe',
+      ['query', 'HKLM\\SOFTWARE\\GitForWindows', '/v', 'InstallPath'],
+      { timeout: 5000, windowsHide: true, encoding: 'utf8' },
+    );
+    const match = out.match(/InstallPath\s+REG_SZ\s+(.+)/);
+    return match?.[1]?.trim() || null;
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Locate Git Bash on Windows. CreateProcess resolves a bare `bash` to
+ * System32's WSL launcher before any PATH entry (the rationale already
+ * documented for ZCode in hooks.ts), and the ZCode cmd fallback is not
+ * available to rendered shell-string commands, so on Windows the
+ * interpreter has to be an absolute path. Standard install locations
+ * first; the HKLM `GitForWindows` key covers custom InstallPath.
+ * Returns the exe path, or null when Git is not found.
+ */
+export function findGitBashWindows(
+  env: NodeJS.ProcessEnv = process.env,
+  home: string = getUserHome(),
+  readInstallPath: () => string | null = queryGitInstallPath,
+): string | null {
+  const candidates: string[] = [];
+  if (env.ProgramFiles) candidates.push(path.join(env.ProgramFiles, 'Git', 'bin', 'bash.exe'));
+  if (env['ProgramFiles(x86)']) candidates.push(path.join(env['ProgramFiles(x86)'], 'Git', 'bin', 'bash.exe'));
+  if (env.LOCALAPPDATA) candidates.push(path.join(env.LOCALAPPDATA, 'Programs', 'Git', 'bin', 'bash.exe'));
+  candidates.push(path.join(home, 'AppData', 'Local', 'Programs', 'Git', 'bin', 'bash.exe'));
+  for (const candidate of candidates) {
+    if (fs.existsSync(candidate)) return candidate;
+  }
+
+  const installPath = readInstallPath();
+  if (installPath) {
+    const candidate = path.join(installPath, 'bin', 'bash.exe');
+    if (fs.existsSync(candidate)) return candidate;
+  }
+  return null;
+}
+
+let _winBashLauncherCache: string | undefined;
+
+/**
+ * The shell word to emit in a rendered hook command. POSIX keeps the bare
+ * `bash`; Windows substitutes the resolved Git Bash path (quoted, forward
+ * slashes so it stays JSON-safe — the default install location contains a
+ * space) so the command never reaches the WSL launcher. Falls back to
+ * plain `bash` only when Git is absent — there the old form was already
+ * dead anyway.
+ */
+function getHookShellCommand(): string {
+  if (process.platform !== 'win32') return 'bash';
+  if (_winBashLauncherCache === undefined) {
+    const found = findGitBashWindows();
+    if (found) {
+      _winBashLauncherCache = `"${found.split(path.sep).join('/')}"`;
+    } else {
+      _winBashLauncherCache = 'bash';
+      log.debug('teamai hooks: Git Bash not found on this Windows machine; hook commands keep bare `bash` and may resolve to the WSL launcher.');
+    }
+  }
+  return _winBashLauncherCache;
+}
+
 /** Generate the hook-dispatch command for a given event, tool, and optional matcher. */
 export function getDispatchCommand(event: string, tool: string, matcher?: string, binPath?: string): string {
   const bin = binPath ?? 'teamai';
   const matcherArg = matcher && matcher !== '*' ? ` --matcher ${matcher}` : '';
-  return `bash -lc "${bin} hook-dispatch ${event} --tool ${tool}${matcherArg} 2>/dev/null" || true`;
+  return `${getHookShellCommand()} -lc "${bin} hook-dispatch ${event} --tool ${tool}${matcherArg} 2>/dev/null" || true`;
 }
 
 /**
diff --git a/src/hooks.ts b/src/hooks.ts
index 7d3cfa3e9..83d45a932 100644
--- a/src/hooks.ts
+++ b/src/hooks.ts
@@ -345,12 +345,22 @@ function toCodexEntry(def: HookDef): CodexHookMatcher {
   return entry;
 }
 
-const COPILOT_BUILTIN_COMMAND_RE = /^bash -lc "(teamai hook-dispatch [^"]+) 2>\/dev\/null" \|\| true$/;
+// getDispatchCommand() prefixes the launcher with a quoted, forward-slash Git
+// Bash path on Windows and keeps bare `bash` everywhere else (and on Windows
+// machines where Git Bash cannot be found).
+const COPILOT_BUILTIN_COMMAND_RE = /^("[^"]+"|bash) -lc "(teamai hook-dispatch [^"]+) 2>\/dev\/null" \|\| true$/;
 
 /** Render a valid PowerShell equivalent for TeamAI's generated bash wrapper. */
 function copilotPowershellCommand(command: string): string {
   const match = command.match(COPILOT_BUILTIN_COMMAND_RE);
-  return match ? `${match[1]} 2>$null; exit 0` : command;
+  if (!match) return command;
+  // PowerShell needs the call operator before a quoted executable path, and
+  // `|| true` maps to `; exit 0`. The dispatch command inside is
+  // builtin-generated (no `$`, backticks or double quotes), so echoing it
+  // inside a double-quoted PowerShell string is interpolation-safe.
+  return match[1] === 'bash'
+    ? `${match[2]} 2>$null; exit 0`
+    : `& ${match[1]} -lc "${match[2]} 2>/dev/null"; exit 0`;
 }
 
 function toCopilotEntry(def: HookDef): CopilotHookEntry {