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/math/vector4/project.md

@@ -0,0 +1,23 @@
+# Vector4::Project
+
+```cpp
+static Vector4 Project(const Vector4& vector, const Vector4& onNormal)
+```
+
+将向量投影到法线向量上。
+
+**参数：**
+- `vector` - 要投影的向量
+- `onNormal` - 投影到的法线向量
+
+**返回：** `Vector4` - 投影结果
+
+**复杂度：** O(1)
+
+**示例：**
+
+```cpp
+Vector4 v(1.0f, 1.0f, 1.0f, 1.0f);
+Vector4 normal(1.0f, 0.0f, 0.0f, 0.0f);
+Vector4 projected = Vector4::Project(v, normal);  // (1, 0, 0, 0)
+```