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/opengl/pipeline-state/apply.md

@@ -0,0 +1,27 @@
+# OpenGLPipelineState::Apply
+
+```cpp
+void Apply();
+```
+
+应用所有管线状态（深度模板、混合、光栅化、视口、裁剪）。
+
+**线程安全：** ❌
+
+**示例：**
+
+```cpp
+pipelineState->SetDepthStencilState(dsState);
+pipelineState->SetBlendState(blendState);
+pipelineState->SetRasterizerState(rsState);
+pipelineState->SetViewport(viewport);
+pipelineState->SetScissor(scissor);
+pipelineState->Apply();
+```
+
+## 相关文档
+
+- [OpenGLPipelineState 总览](pipeline-state.md) - 返回类总览
+- [ApplyDepthStencil](apply-depth-stencil.md) - 仅应用深度模板
+- [ApplyBlend](apply-blend.md) - 仅应用混合
+- [ApplyRasterizer](apply-rasterizer.md) - 仅应用光栅化