fix(security): 安全漏洞修复与依赖升级

- 升级 Vert.x 4.5.24 → 4.5.27, postgresql 42.7.3 → 42.7.11, logback 1.5.18 → 1.5.32, axios 1.13.5 → 1.16.1
- 修复 JWT 签名验证和密码比较的时序攻击漏洞 (MessageDigest.isEqual)
- 修复 AESUtils 使用不安全 Random 改为 SecureRandom
- 修复登录用户枚举和异常信息泄露，统一错误提示
- 修复 RateLimiter count++ 非原子操作 (AtomicInteger)
- 修复 JsParserExecutor DCL 模式缺少 volatile
- 修复 Token 日志泄露，仅打印前8字符
- 修复 Playground 密码时序攻击和堆栈泄露
- 所有 window.open 添加 noopener,noreferrer
- LocalConstant 改用 ConcurrentHashMap 保证线程安全
- Dockerfile 添加非 root 用户运行，secret.yml 加入 .gitignore

docker-entrypoint.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+set -e
+
+# Fix permissions on volume-mounted directories (runs as root)
+chown -R appuser:appgroup /app/db /app/logs /app/resources 2>/dev/null || true
+
+# Run Java directly - entrypoint is PID 1, exec makes Java PID 1
+# Docker SIGTERM goes directly to Java, triggering ShutdownHook
+exec java -Xmx${JVM_XMX:-512M} ${JVM_OPTS} -Duser.timezone=${TZ:-Asia/Shanghai} -jar /app/netdisk-fast-download.jar