feat(deeplink): implement ccswitch:// protocol for provider import

Add deep link support to enable one-click provider configuration import via ccswitch:// URLs.

Backend:
- Implement URL parsing and validation (src-tauri/src/deeplink.rs)
- Add Tauri commands for parse and import (src-tauri/src/commands/deeplink.rs)
- Register ccswitch:// protocol in macOS Info.plist
- Add comprehensive unit tests (src-tauri/tests/deeplink_import.rs)

Frontend:
- Create confirmation dialog with security review UI (src/components/DeepLinkImportDialog.tsx)
- Add API wrapper (src/lib/api/deeplink.ts)
- Integrate event listeners in App.tsx

Configuration:
- Update Tauri config for deep link handling
- Add i18n support for Chinese and English
- Include test page for deep link validation (deeplink-test.html)

Files: 15 changed, 1312 insertions(+)

src-tauri/Info.plist

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <!-- 注册 ccswitch:// 自定义 URL 协议，用于深链接导入 -->
+  <key>CFBundleURLTypes</key>
+  <array>
+    <dict>
+      <key>CFBundleURLName</key>
+      <string>CC Switch Deep Link</string>
+      <key>CFBundleURLSchemes</key>
+      <array>
+        <string>ccswitch</string>
+      </array>
+    </dict>
+  </array>
+</dict>
+</plist>
+