fix: improve doc link navigation and tree display

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docs/api/threading/tasksystemconfig/workerthreadcount.md

@@ -0,0 +1,25 @@
+# TaskSystemConfig::workerThreadCount
+
+```cpp
+uint32_t workerThreadCount = 0
+```
+
+工作线程数量。当值为 0 时，任务系统自动检测 `std::thread::hardware_concurrency()` 并使用该值。
+
+**类型：** `uint32_t`
+
+**默认值：** `0`（自动检测）
+
+**示例：**
+
+```cpp
+TaskSystemConfig config;
+config.workerThreadCount = 4; // 使用 4 个工作线程
+
+TaskSystemConfig autoConfig;
+autoConfig.workerThreadCount = 0; // 自动检测（推荐）
+```
+
+## 相关文档
+
+- [TaskSystemConfig 总览](tasksystemconfig.md) - 返回类总览