feat: upgrade version to v1.2.0 (#784)

* feat: upgrade version to v1.2.0

- Update version number to 1.2.0 in all package.json files
- Add v1.2.0 placeholder in CHANGELOG.md with custom SQL cleanup feature
- Upgrade dependencies

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Co-Authored-By: Claude <noreply@anthropic.com>

* fix: update @unhead/vue import path for v2.x compatibility

Change import from '@unhead/vue' to '@unhead/vue/client' for createHead

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

vitepress-docs/package.json

@@ -1,12 +1,12 @@
 {
   "name": "temp-mail-docs",
   "private": true,
-  "version": "1.1.0",
+  "version": "1.2.0",
   "type": "module",
   "devDependencies": {
-    "@types/node": "^24.10.1",
+    "@types/node": "^25.0.0",
     "vitepress": "^1.6.4",
-    "wrangler": "^4.53.0"
+    "wrangler": "^4.54.0"
   },
   "scripts": {
     "dev": "vitepress dev docs",