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>

packages/server/src/index.ts

@@ -12,6 +12,13 @@ import { participantService } from './services/participant.service';
 
 async function main(): Promise<void> {
   try {
+    if (!config.adminAccessCode) {
+      logger.warn('ADMIN_ACCESS_CODE 未配置，管理员登录将被拒绝');
+    }
+    if (!config.isDev && config.jwtSecret === 'dev-secret-change-in-production') {
+      logger.error('生产环境禁止使用默认 JWT_SECRET，请配置环境变量');
+      process.exit(1);
+    }
     // Connect to Database
     logger.info('Connecting to Database...');
     await connectDatabase();
@@ -79,4 +86,3 @@ async function main(): Promise<void> {
 }
 
 main();
-