fix: stabilize Windows launchers for v2.1.4

Fix Windows portable, installer, and desktop launcher startup paths; bump desktop metadata to 2.1.4.

tests/windows-launchers.test.mjs

@@ -0,0 +1,71 @@
+import { readFileSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+import { join } from 'node:path';
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+const repoRoot = fileURLToPath(new URL('..', import.meta.url));
+
+function readRepoFile(...parts) {
+  return readFileSync(join(repoRoot, ...parts), 'utf8');
+}
+
+function lineOf(content, needle) {
+  const lines = content.split(/\r?\n/);
+  const index = lines.findIndex((line) => line.includes(needle));
+  assert.notEqual(index, -1, `missing line containing: ${needle}`);
+  return lines[index];
+}
+
+test('Windows-Start dependency fallback text escapes parentheses inside IF block', () => {
+  const script = readRepoFile('portable', 'Windows-Start.bat');
+
+  assert.match(
+    lineOf(script, 'Falling back to npm install'),
+    /\^\(USB drives may take 20\+ minutes\^\)\./,
+  );
+  assert.match(
+    lineOf(script, 'pre-installed deps'),
+    /\^\(~200 MB\^\)\./,
+  );
+});
+
+test('portable Windows launchers disable OpenClaw bonjour discovery', () => {
+  for (const scriptName of [
+    'Windows-Start.bat',
+    'Windows-Menu.bat',
+    'Windows-Install.bat',
+  ]) {
+    const script = readRepoFile('portable', scriptName);
+    assert.match(
+      script,
+      /OPENCLAW_DISABLE_BONJOUR=1/,
+      `${scriptName} should disable bonjour discovery`,
+    );
+  }
+});
+
+test('PowerShell installer generated start.bat disables OpenClaw bonjour discovery', () => {
+  const script = readRepoFile('install', 'install.ps1');
+
+  assert.match(script, /\$startBat = @'/);
+  assert.match(
+    script,
+    /set "OPENCLAW_DISABLE_BONJOUR=1"/,
+    'generated start.bat should disable bonjour discovery',
+  );
+});
+
+test('Electron desktop launcher disables OpenClaw bonjour discovery on Windows only', () => {
+  const source = readRepoFile('u-claw-app', 'src', 'main.js');
+
+  assert.match(
+    source,
+    /if\s*\(\s*process\.platform\s*===\s*['"]win32['"]\s*\)\s*{[\s\S]*?env\.OPENCLAW_DISABLE_BONJOUR\s*=\s*['"]1['"]/,
+  );
+  assert.doesNotMatch(
+    source,
+    /OPENCLAW_DISABLE_BONJOUR:\s*['"]1['"]/,
+    'bonjour disable flag should not be in the unconditional env object',
+  );
+});