docs: fix naming conventions across threading, math, memory, core, and debug modules

threading/:
- Rename 19 camelCase method files to hyphenated names
- task-system: createtaskgroup→create-task-group, etc.
- tasksystemconfig: enabletaskprofiling→enable-task-profiling, etc.
- thread: getcurrentid→get-current-id, etc.
- task: addref→add-ref, getid→get-id, etc.

math/:
- Rename underscore operator files to hyphenated
- vector3: operator_add→operator-add, etc.
- matrix4: gettranslation→get-translation, etc.
- vector4: tovector3→to-vector3, constructor_vector3→constructor-vector3
- sphere: sphere_constructor→sphere-constructor, etc.

memory/:
- Remove duplicate memorymanager/ folder (kept manager/ which was correct)

core/:
- filewriter: Consolidate ctor-default.md and ctor-file.md into constructor.md
- Rename dtor.md→destructor.md

debug/:
- filelogsink: Rename construct.md→constructor.md, ~filelogsink.md→destructor.md

All overview pages updated with new file references.

docs/api/math/matrix4/matrix4.md

@@ -34,17 +34,17 @@
 | [`RotationX`](rotationx.md) | 创建绕 X 轴旋转矩阵 |
 | [`RotationY`](rotationy.md) | 创建绕 Y 轴旋转矩阵 |
 | [`RotationZ`](rotationz.md) | 创建绕 Z 轴旋转矩阵 |
-| [`operator*`](operator_mul.md) | 矩阵乘法 |
+| [`operator*`](operator-mul.md) | 矩阵乘法 |
 | [`MultiplyPoint`](multiplypoint.md) | 变换点（w=1） |
 | [`MultiplyVector`](multiplyvector.md) | 变换向量（w=0） |
 | [`Transpose`](transpose.md) | 转置矩阵 |
 | [`Inverse`](inverse.md) | 求逆矩阵 |
 | [`Determinant`](determinant.md) | 计算行列式 |
-| [`GetTranslation`](gettranslation.md) | 获取平移分量 |
-| [`GetRotation`](getrotation.md) | 获取旋转分量 |
-| [`GetScale`](getscale.md) | 获取缩放分量 |
+| [`GetTranslation`](get-translation.md) | 获取平移分量 |
+| [`GetRotation`](get-rotation.md) | 获取旋转分量 |
+| [`GetScale`](get-scale.md) | 获取缩放分量 |
 | [`Decompose`](decompose.md) | 分解矩阵为变换分量 |
-| [`operator[]`](operator_index.md) | 访问矩阵行数据 |
+| [`operator[]`](operator-index.md) | 访问矩阵行数据 |
 
 ## 使用示例