持续集成：增加Redis运行时密码预检

deploy/restart-all.sh

@@ -31,6 +31,11 @@ if [ -z "${TRAIN_STUDENT_IDENTITY_HASH_KEY:-}" ]; then
     exit 1
 fi
 
+if [ -z "${SPRING_REDIS_PASSWORD:-}" ]; then
+    echo "错误：缺少 SPRING_REDIS_PASSWORD"
+    exit 1
+fi
+
 echo "运行时安全配置存在性检查通过"
 
 echo "=== 1. 检查并停止当前用户的旧后端进程 ==="