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/pipeline-state/create-input-element.md

@@ -0,0 +1,54 @@
+# D3D12PipelineState::CreateInputElement
+
+## 函数签名
+
+```cpp
+static D3D12_INPUT_ELEMENT_DESC CreateInputElement(
+    const char* semanticName,
+    uint32_t semanticIndex,
+    Format format,
+    uint32_t inputSlot,
+    uint32_t alignedByteOffset)
+
+static D3D12_INPUT_ELEMENT_DESC CreateInputElement(
+    const char* semanticName,
+    uint32_t semanticIndex,
+    Format format,
+    uint32_t inputSlot)
+```
+
+## 中文描述
+
+创建输入元素描述符，用于定义顶点缓冲区的数据布局。
+
+## 参数
+
+| 参数 | 类型 | 描述 |
+|------|------|------|
+| `semanticName` | `const char*` | 语义名称（如 "POSITION", "TEXCOORD"） |
+| `semanticIndex` | `uint32_t` | 语义索引 |
+| `format` | `Format` | 数据格式 |
+| `inputSlot` | `uint32_t` | 输入槽位 |
+| `alignedByteOffset` | `uint32_t` | 对齐字节偏移（仅第一个重载） |
+
+## 返回值
+
+`D3D12_INPUT_ELEMENT_DESC` - 输入元素描述符
+
+## 复杂度
+
+O(1)
+
+## 示例
+
+```cpp
+D3D12_INPUT_ELEMENT_DESC elements[] = {
+    D3D12PipelineState::CreateInputElement("POSITION", 0, Format::R32G32B32_FLOAT, 0, 0),
+    D3D12PipelineState::CreateInputElement("TEXCOORD", 0, Format::R32G32_FLOAT, 0, 12)
+};
+```
+
+## 相关文档
+
+- [D3D12PipelineState](pipeline-state.md) - 类总览
+- [D3D12PipelineState::CreateDesc](create-desc.md) - 创建管线描述符