fix(ink): restore Git Bash raw input handling

## Bug 详情
Windows Git Bash 终端下，csc 4.1.x 的 REPL 输入异常：回车需要按两次，方向键无法选择历史对话，输入 / 无法正常显示或触发命令。

## 根因
Windows raw mode 风险判断将 Git for Windows 的 MINGW64/MINGW32 与 MSYS2/Cygwin/mintty 环境一并禁用 raw mode，导致 Git Bash 走 cooked input fallback，Ink 无法按预期解析 Enter、方向键和 slash 输入。

## 修复方案
将 Git for Windows 的 MINGW64/MINGW32 从 raw mode 不安全名单中排除，恢复 Git Bash 的 raw mode 输入处理，同时保留 MSYS/UCRT/CLANG/Cygwin 和显式禁用开关的保护路径。

## 变更要点
- 调整 Ink raw mode 风险检测，Git Bash 保持 raw mode
- 同步启动早期输入捕获的 Git Bash raw mode 判断
- 增加 Git Bash raw mode 回归测试，并保留 MSYS2/Cygwin 场景覆盖

## 自测
- bun test packages/@ant/ink/src/core/__tests__/raw-mode-support.test.ts src/utils/__tests__/earlyInput.test.ts
- git diff --check
- bun run typecheck（失败，失败点为仓库既有 Zod 类型、缺失声明、MACRO.COMMIT、AppState 等错误，不涉及本次修改文件）

packages/@ant/ink/src/core/__tests__/raw-mode-support.test.ts

@@ -18,11 +18,29 @@ describe('isWindowsRawModeUnsafe', () => {
     ).toBe(false);
   });
 
+  test('does not disable raw mode for Git Bash terminals', () => {
+    expect(
+      isWindowsRawModeUnsafe({
+        MSYSTEM: 'MINGW64',
+        TERM_PROGRAM: 'mintty',
+        SHELL: '/usr/bin/bash',
+      }, 'win32'),
+    ).toBe(false);
+    expect(
+      isWindowsRawModeUnsafe({
+        MSYSTEM: 'MINGW32',
+        TERM: 'xterm-256color',
+      }, 'win32'),
+    ).toBe(false);
+  });
+
   test('disables raw mode for MSYS2 and Cygwin terminals', () => {
     expect(isWindowsRawModeUnsafe({ MSYSTEM: 'UCRT64' }, 'win32')).toBe(true);
+    expect(isWindowsRawModeUnsafe({ MSYSTEM: 'CLANG64' }, 'win32')).toBe(true);
+    expect(isWindowsRawModeUnsafe({ MSYSTEM: 'MSYS' }, 'win32')).toBe(true);
     expect(isWindowsRawModeUnsafe({ TERM: 'cygwin' }, 'win32')).toBe(true);
     expect(isWindowsRawModeUnsafe({ TERM_PROGRAM: 'mintty' }, 'win32')).toBe(
-      true,
+      false,
     );
     expect(isWindowsRawModeUnsafe({ SHELL: '/usr/bin/bash' }, 'win32')).toBe(
       false,

packages/@ant/ink/src/core/raw-mode-support.ts

@@ -15,18 +15,27 @@ export function isWindowsRawModeUnsafe(
   }
 
   const term = env.TERM?.toLowerCase() ?? '';
-  const termProgram = env.TERM_PROGRAM?.toLowerCase() ?? '';
   const msystem = env.MSYSTEM?.toLowerCase() ?? '';
   const shell = env.SHELL?.toLowerCase() ?? '';
 
+  // Git for Windows reports MSYSTEM=MINGW64/MINGW32 and often runs under
+  // mintty, but it needs raw mode for Ink key parsing. Disabling raw mode
+  // there makes Enter, arrows, and slash commands behave like cooked shell
+  // input. Keep the startup-crash workaround scoped to MSYS2/Cygwin-like
+  // environments and leave Git Bash on the normal raw-mode path.
+  const isGitForWindowsMingw =
+    msystem === 'mingw64' || msystem === 'mingw32';
+  if (isGitForWindowsMingw) {
+    return false;
+  }
+
   return (
     term === 'cygwin' ||
-    term.includes('mintty') ||
-    termProgram.includes('mintty') ||
-    msystem.length > 0 ||
+    msystem === 'msys' ||
+    msystem.startsWith('ucrt') ||
+    msystem.startsWith('clang') ||
     shell.includes('msys') ||
-    shell.includes('cygwin') ||
-    shell.includes('mingw')
+    shell.includes('cygwin')
   );
 }
 

src/utils/earlyInput.ts

@@ -31,18 +31,20 @@ function supportsEarlyInputRawMode(): boolean {
   }
 
   const term = process.env.TERM?.toLowerCase() ?? ''
-  const termProgram = process.env.TERM_PROGRAM?.toLowerCase() ?? ''
   const msystem = process.env.MSYSTEM?.toLowerCase() ?? ''
   const shell = process.env.SHELL?.toLowerCase() ?? ''
 
+  if (msystem === 'mingw64' || msystem === 'mingw32') {
+    return true
+  }
+
   return !(
     term === 'cygwin' ||
-    term.includes('mintty') ||
-    termProgram.includes('mintty') ||
-    msystem.length > 0 ||
+    msystem === 'msys' ||
+    msystem.startsWith('ucrt') ||
+    msystem.startsWith('clang') ||
     shell.includes('msys') ||
-    shell.includes('cygwin') ||
-    shell.includes('mingw')
+    shell.includes('cygwin')
   )
 }