fix: improve doc link navigation and tree display

- Fix link resolution with proper relative/absolute path handling
- Improve link styling with underline decoration
- Hide leaf nodes from tree, only show directories
- Fix log file path for packaged app

docs/api/rhi/device/get-capabilities.md

@@ -0,0 +1,32 @@
+# RHIDevice::GetCapabilities
+
+```cpp
+virtual const RHICapabilities& GetCapabilities() const = 0;
+```
+
+获取当前设备的图形能力。
+
+**返回：** 设备能力结构体引用
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+const RHICapabilities& caps = device->GetCapabilities();
+
+if (caps.bSupportsRayTracing) {
+    // 启用光线追踪功能
+}
+
+if (caps.bSupportsComputeShaders) {
+    // 启用计算着色器
+}
+
+uint32_t maxTexSize = caps.maxTexture2DSize;
+```
+
+## 相关文档
+
+- [RHIDevice 总览](device.md) - 返回类总览
+- [RHICapabilities](../capabilities/capabilities.md) - 设备能力类