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/vector4/vector4.md

@@ -29,14 +29,14 @@ Vector4 是四维向量结构体，常用于：
 
 | 方法 | 描述 |
 |------|------|
-| [`Vector4()`](constructor_default.md) | 默认构造函数，创建零向量 |
+| [`Vector4()`](constructor-default.md) | 默认构造函数，创建零向量 |
 | [`Vector4(x, y, z, w)`](constructor.md) | 从四个分量构造向量 |
-| [`Vector4(Vector3, w)`](constructor_vector3.md) | 从 Vector3 构造（w 默认 0） |
+| [`Vector4(Vector3, w)`](constructor-vector3.md) | 从 Vector3 构造（w 默认 0） |
 | [`Zero`](zero.md) | 返回零向量 (0, 0, 0, 0) |
 | [`One`](one.md) | 返回单位向量 (1, 1, 1, 1) |
 | [`Dot`](dot.md) | 计算两个向量的点积 |
 | [`Project`](project.md) | 将向量投影到法线向量上 |
-| [`ToVector3`](tovector3.md) | 转换为 Vector3 |
+| [`ToVector3`](to-vector3.md) | 转换为 Vector3 |
 | [`operator[]`](./operator-brackets.md) | 下标访问分量 |
 | [`operator+`](operator-add.md) | 向量加法 |
 | [`operator-`](operator-sub.md) | 向量减法 |