chore: bump version to v3.7.1

Prepare for v3.7.1 maintenance release.

**Version Updates**:
- package.json: 3.7.0 → 3.7.1
- src-tauri/Cargo.toml: 3.7.0 → 3.7.1
- src-tauri/tauri.conf.json: 3.7.0 → 3.7.1
- README.md: version badge updated
- README_ZH.md: version badge updated

**CHANGELOG.md**:
- Added v3.7.1 release notes (2025-11-22)
- 3 bug fixes (Skills installation, Gemini persistence, dialog overlay)
- 2 new features (Gemini config directory, ArchLinux support)
- 3 improvements (error i18n, download timeout, code formatting)
- 1 reverted feature (auto-launch)

**Code Formatting**:
- Applied prettier to SkillsPage.tsx and skillErrorParser.ts

**Pre-Release Checks**:
✅ TypeScript type check passed
✅ Prettier format check passed
✅ All version numbers synchronized

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cc-switch",
-  "version": "3.7.0",
+  "version": "3.7.1",
   "description": "All-in-One Assistant for Claude Code, Codex & Gemini CLI",
   "scripts": {
     "dev": "pnpm tauri dev",