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/d3d12/root-signature/create-static-sampler.md

@@ -0,0 +1,39 @@
+# D3D12RootSignature::CreateStaticSampler
+
+## 函数签名
+
+```cpp
+static D3D12_STATIC_SAMPLER_DESC CreateStaticSampler(uint32_t shaderRegister, const D3D12_SAMPLER_DESC& desc, ShaderVisibility visibility = ShaderVisibility::Pixel)
+```
+
+## 中文描述
+
+创建静态采样器描述符，静态采样器绑定到根签名中无需描述符堆。
+
+## 参数
+
+| 参数 | 类型 | 描述 |
+|------|------|------|
+| `shaderRegister` | `uint32_t` | 着色器寄存器编号 |
+| `desc` | `D3D12_SAMPLER_DESC` | 采样器描述符 |
+| `visibility` | `ShaderVisibility` | 可见性（默认 Pixel） |
+
+## 返回值
+
+`D3D12_STATIC_SAMPLER_DESC` - 静态采样器描述符
+
+## 复杂度
+
+O(1)
+
+## 示例
+
+```cpp
+D3D12_SAMPLER_DESC samplerDesc = D3D12RootSignature::CreateSamplerDesc(FilterMode::Anisotropic, TextureAddressMode::Wrap);
+D3D12_STATIC_SAMPLER_DESC staticSampler = D3D12RootSignature::CreateStaticSampler(0, samplerDesc);
+```
+
+## 相关文档
+
+- [D3D12RootSignature](root-signature.md) - 类总览
+- [D3D12RootSignature::CreateSamplerDesc](create-sampler-desc.md) - 创建采样器描述符