fix: improve doc link navigation and tree display

- Fix link resolution with proper relative/absolute path handling
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- Fix log file path for packaged app

docs/api/rhi/d3d12/fence/get-completed-value.md

@@ -0,0 +1,34 @@
+# D3D12Fence::GetCompletedValue
+
+## 函数签名
+
+```cpp
+uint64_t GetCompletedValue() const override
+```
+
+## 中文描述
+
+获取 GPU 已完成的最新栅栏值。
+
+## 返回值
+
+`uint64_t` - 已完成的栅栏值
+
+## 复杂度
+
+O(1)
+
+## 示例
+
+```cpp
+uint64_t completedValue = d3d12Fence->GetCompletedValue();
+if (completedValue >= fenceValue) {
+    // 指定的栅栏值已完成
+}
+```
+
+## 相关文档
+
+- [D3D12Fence](fence.md) - 类总览
+- [D3D12Fence::Signal](signal.md) - 信号栅栏
+- [D3D12Fence::IsSignaled](is-signaled.md) - 检查是否已信号