diff --git a/.github/workflows/windows-recovery.yml b/.github/workflows/windows-recovery.yml
index 3350f66f66b..1b490060db5 100644
--- a/.github/workflows/windows-recovery.yml
+++ b/.github/workflows/windows-recovery.yml
@@ -61,6 +61,9 @@ on:
       - 'scripts/clean-build.mjs'
       - 'scripts/clean-paths.mjs'
       - 'scripts/windows-runtime-host-local-ipc-trust.ps1'
+      # The desktop launcher executes cmd.exe with native console code pages.
+      - 'apps/desktop/src/main/opencli-chrome.ts'
+      - 'apps/desktop/src/main/__tests__/opencli-chrome.test.ts'
       # Every file in the import closure of the suites below that branches on
       # `process.platform === 'win32'`. Generated, not curated:
       # `scripts/windows-package-source-closure.test.mjs` recomputes this set
@@ -184,6 +187,10 @@ jobs:
       - name: Build test artifacts
         run: npm.cmd run build:test
 
+      - name: Verify Windows opencli launchers
+        shell: pwsh
+        run: node.exe --test apps/desktop/dist/main/__tests__/opencli-chrome.test.js
+
       - name: Verify managed dependency alternate streams
         shell: pwsh
         run: |
diff --git a/apps/desktop/src/main/__tests__/opencli-chrome.test.ts b/apps/desktop/src/main/__tests__/opencli-chrome.test.ts
index e221765b292..f81ca22a142 100644
--- a/apps/desktop/src/main/__tests__/opencli-chrome.test.ts
+++ b/apps/desktop/src/main/__tests__/opencli-chrome.test.ts
@@ -18,8 +18,8 @@
  */
 
 import assert from 'node:assert/strict';
-import { execFileSync } from 'node:child_process';
-import { existsSync, mkdirSync, mkdtempSync, readFileSync, writeFileSync } from 'node:fs';
+import { execFileSync, spawnSync } from 'node:child_process';
+import { existsSync, mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs';
 import { tmpdir } from 'node:os';
 import { dirname, join } from 'node:path';
 import { test } from 'node:test';
@@ -45,10 +45,67 @@ test('Windows launchers set Node mode before starting the entry', () => {
   assert.equal(launchers.command, join(dir, 'opencli-mcp.cmd'));
   assert.equal(
     readFileSync(launchers.host, 'utf8'),
-    '@echo off\r\nset ELECTRON_RUN_AS_NODE=1\r\n"C:\\Maka\\Maka.exe" "C:\\Maka\\main.js" host\r\n',
+    '@echo off\r\nsetlocal DisableDelayedExpansion\r\nfor /f "tokens=2 delims=:." %%c in (\'chcp\') do set "MAKA_OPENCLI_CODE_PAGE=%%c"\r\nchcp 65001 >nul\r\nset ELECTRON_RUN_AS_NODE=1\r\n"C:\\Maka\\Maka.exe" "C:\\Maka\\main.js" host\r\nset "MAKA_OPENCLI_EXIT_CODE=%ERRORLEVEL%"\r\nchcp %MAKA_OPENCLI_CODE_PAGE% >nul\r\nexit /b %MAKA_OPENCLI_EXIT_CODE%\r\n',
   );
 });
 
+test('Windows launchers preserve Unicode and batch metacharacters without adding protocol output', { skip: process.platform !== 'win32' }, (t) => {
+  const root = mkdtempSync(join(tmpdir(), 'maka-opencli-'));
+  t.after(() => rmSync(root, { recursive: true, force: true }));
+  const directory = join(root, '中文 %MAKA_LAUNCHER_TEST% !MAKA_LAUNCHER_TEST! & files');
+  mkdirSync(directory);
+  const entry = join(directory, 'entry.mjs');
+  writeFileSync(entry, 'console.log(JSON.stringify({ args: process.argv.slice(2), node: process.env.ELECTRON_RUN_AS_NODE })); process.exitCode = 23;');
+  writeOpencliLaunchers(directory, 'win32', process.execPath, entry);
+  for (const page of [936, 65001]) {
+    for (const [file, mode] of [['opencli-mcp.cmd', 'stdio'], ['opencli-mcp-host.cmd', 'host']]) {
+      // CALL returns to the same console, where the caller must retain its code
+      // page as well as the child's exit status. Keep diagnostics off stdout.
+      writeFileSync(join(directory, 'caller.cmd'), `@echo off\r\nchcp ${page} >nul\r\ncall ${file}\r\nset "childExit=%errorlevel%"\r\nchcp >code-page.txt\r\nexit /b %childExit%\r\n`);
+      const result = spawnSync(process.env.ComSpec ?? 'cmd.exe', ['/d', '/v:on', '/s', '/c', 'caller.cmd'], {
+        cwd: directory,
+        env: { ...process.env, MAKA_LAUNCHER_TEST: 'expanded' },
+        encoding: 'utf8',
+        windowsHide: true,
+        windowsVerbatimArguments: true,
+        timeout: 10_000,
+      });
+      assert.ifError(result.error);
+      assert.equal(result.status, 23, result.stderr);
+      assert.equal(result.stderr, '');
+      assert.deepEqual(JSON.parse(result.stdout), { args: [mode], node: '1' });
+      assert.equal(Number(readFileSync(join(directory, 'code-page.txt'), 'utf8').match(/:\s*(\d+)/u)?.[1]), page);
+    }
+  }
+});
+
+test('Windows launchers restore code pages reported with localized trailing punctuation', { skip: process.platform !== 'win32' }, (t) => {
+  const directory = mkdtempSync(join(tmpdir(), 'maka-opencli-locale-'));
+  t.after(() => rmSync(directory, { recursive: true, force: true }));
+  const entry = join(directory, 'entry.mjs');
+  writeFileSync(entry, 'process.stdout.write("protocol"); process.exitCode = 23;');
+  for (const page of [850, 936, 65001]) {
+    const launchers = writeOpencliLaunchers(directory, 'win32', process.execPath, entry);
+    // Simulate only the localized query response; cmd.exe still executes the
+    // generated parser, changes the real code page and restores it on return.
+    const script = readFileSync(launchers.command, 'utf8');
+    assert.ok(script.includes("in ('chcp')"));
+    writeFileSync(launchers.command, script.replace("in ('chcp')", `in ('echo Aktive Codepage: ${page}.')`));
+    writeFileSync(join(directory, 'caller.cmd'), `@echo off\r\nchcp ${page} >nul\r\ncall opencli-mcp.cmd\r\nset "childExit=%errorlevel%"\r\nchcp >code-page.txt\r\nexit /b %childExit%\r\n`);
+    const result = spawnSync(process.env.ComSpec ?? 'cmd.exe', ['/d', '/v:on', '/c', 'caller.cmd'], {
+      cwd: directory,
+      encoding: 'utf8',
+      windowsHide: true,
+      timeout: 10_000,
+    });
+    assert.ifError(result.error);
+    assert.equal(result.status, 23, result.stderr);
+    assert.equal(result.stderr, '');
+    assert.equal(result.stdout, 'protocol');
+    assert.equal(Number(readFileSync(join(directory, 'code-page.txt'), 'utf8').match(/:\s*(\d+)/u)?.[1]), page);
+  }
+});
+
 test('the host manifest goes to Chrome and existing browsers, never over another live install', () => {
   const root = mkdtempSync(join(tmpdir(), 'maka-opencli-'));
   const host = join(root, 'opencli-mcp-host');
diff --git a/apps/desktop/src/main/opencli-chrome.ts b/apps/desktop/src/main/opencli-chrome.ts
index bc4fba2d0d7..32bac933ccf 100644
--- a/apps/desktop/src/main/opencli-chrome.ts
+++ b/apps/desktop/src/main/opencli-chrome.ts
@@ -64,7 +64,13 @@ export function writeOpencliLaunchers(
   const write = (name: string, args: string): string => {
     if (platform === 'win32') {
       const file = join(dir, `${name}.cmd`);
-      writeFileSync(file, `@echo off\r\nset ELECTRON_RUN_AS_NODE=1\r\n"${executable}" "${entry}" ${args}\r\n`);
+      // cmd reads batch files using its console code page, even when paths are
+      // quoted. Keep UTF-8 paths literal through both batch expansion phases.
+      // Unlike environment variables, the console code page outlives SETLOCAL.
+      // Restore it before returning, without losing the child's exit status.
+      // chcp's localized response can end the numeric page with a period.
+      const quotePath = (path: string) => `"${path.replaceAll('%', '%%')}"`;
+      writeFileSync(file, `@echo off\r\nsetlocal DisableDelayedExpansion\r\nfor /f "tokens=2 delims=:." %%c in ('chcp') do set "MAKA_OPENCLI_CODE_PAGE=%%c"\r\nchcp 65001 >nul\r\nset ELECTRON_RUN_AS_NODE=1\r\n${quotePath(executable)} ${quotePath(entry)} ${args}\r\nset "MAKA_OPENCLI_EXIT_CODE=%ERRORLEVEL%"\r\nchcp %MAKA_OPENCLI_CODE_PAGE% >nul\r\nexit /b %MAKA_OPENCLI_EXIT_CODE%\r\n`);
       return file;
     }
     const file = join(dir, name);