chore(release): 0.2.1

- 同步 Python 项目版本为 0.2.1（pyproject/uv.lock）

- 同步桌面端版本为 0.2.1（desktop package/lock）

Author: 2977094657

desktop/package-lock.json

@@ -1,7 +1,7 @@
 {
   "name": "wechat-data-analysis-desktop",
   "private": true,
-  "version": "0.2.0",
+  "version": "0.2.1",
   "main": "src/main.cjs",
   "scripts": {
     "dev": "concurrently -k -s first \"cd ..\\\\frontend && npm run dev\" \"cross-env ELECTRON_START_URL=http://localhost:3000 electron .\"",

desktop/package.json

@@ -1,6 +1,6 @@
 [project]
 name = "wechat-decrypt-tool"
-version = "0.2.0"
+version = "0.2.1"
 description = "Modern WeChat database decryption tool with React frontend"
 readme = "README.md"
 requires-python = ">=3.11"