feat: 更新25题，rubrics从timu源同步（裸数组格式）

README.md

@@ -68,11 +68,11 @@ print(f"Layer: {tags['layer']}, Difficulty: {tags['difficulty']}")
 <!-- STATS_START -->
 ## Dataset Statistics
 
-**Total: 30 challenges**
+**Total: 25 challenges**
 
 ### By Layer
 
-![混沌工程层](https://img.shields.io/badge/混沌工程层-5-red) ![基础设施层](https://img.shields.io/badge/基础设施层-9-blue) ![可观测层](https://img.shields.io/badge/可观测层-4-purple) ![中间件层](https://img.shields.io/badge/中间件层-4-orange) ![跨云与级联层](https://img.shields.io/badge/跨云与级联层-4-yellow) ![应用层](https://img.shields.io/badge/应用层-4-green)
+![混沌工程层](https://img.shields.io/badge/混沌工程层-5-red) ![基础设施层](https://img.shields.io/badge/基础设施层-8-blue) ![可观测层](https://img.shields.io/badge/可观测层-3-purple) ![中间件层](https://img.shields.io/badge/中间件层-2-orange) ![跨云与级联层](https://img.shields.io/badge/跨云与级联层-3-yellow) ![应用层](https://img.shields.io/badge/应用层-4-green)
 
 
 ### By Sub-category
@@ -81,20 +81,19 @@ print(f"Layer: {tags['layer']}, Difficulty: {tags['difficulty']}")
 |---|---|
 | 容器与工作负载 | 6 |
 | 多故障与干扰 | 4 |
-| 链路追踪与RUM | 4 |
 | 配置与密钥 | 3 |
-| 级联故障 | 3 |
+| 链路追踪与RUM | 3 |
 | 网络与DNS | 2 |
-| 数据库 | 2 |
-| 缓存与Redis | 2 |
+| 级联故障 | 2 |
 | 题面与证据 | 1 |
 | 探针与健康检查 | 1 |
 | 多云一致性 | 1 |
-| 节点与系统资源 | 1 |
+| 数据库 | 1 |
+| 缓存与Redis | 1 |
 
 ### By Difficulty
 
-![medium](https://img.shields.io/badge/medium-12-orange) ![hard](https://img.shields.io/badge/hard-18-red)
+![medium](https://img.shields.io/badge/medium-12-orange) ![hard](https://img.shields.io/badge/hard-13-red)
 
 
 ### Top Faults
@@ -103,14 +102,14 @@ print(f"Layer: {tags['layer']}, Difficulty: {tags['difficulty']}")
 |---|---|
 | 网络丢包 | 8 |
 | 环境变量写错 | 8 |
-| 网络延迟 | 8 |
+| 网络延迟 | 5 |
 | IO延迟 | 4 |
 | Pod被杀死 | 4 |
-| CPU压力 | 4 |
-| RUM数据异常 | 4 |
 | OOMKill | 3 |
-| CPU限流 | 3 |
-| 烟雾弹 | 3 |
+| RUM数据异常 | 3 |
+| 指标缺失 | 3 |
+| DNS解析故障 | 2 |
+| CPU压力 | 2 |
 <!-- STATS_END -->
 
 ## Usage