chore: sync various improvements and fixes

- Update gitignore and serena config
- Improve connection and voting stores
- Enhance admin routes and socket handling
- Update client-screen views
- Add auth middleware

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -41,3 +41,5 @@ packages/server/prisma/*.db-journal
 # Data files
 参与抽奖人员名单.xlsx
 测试清单.md
+
+.codeartsdoer