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/core/filewriter/filewriter.md

@@ -16,9 +16,9 @@
 
 | 方法 | 描述 |
 |------|------|
-| [`FileWriter()`](ctor-default.md) | 默认构造（不打开文件） |
-| [`FileWriter(filePath, append)`](ctor-file.md) | 构造并打开文件 |
-| [`~FileWriter()`](dtor.md) | 析构函数，自动关闭文件 |
+| [`FileWriter()`](constructor.md) | 默认构造（不打开文件） |
+| [`FileWriter(filePath, append)`](constructor.md) | 构造并打开文件 |
+| [`~FileWriter()`](destructor.md) | 析构函数，自动关闭文件 |
 | [`Open`](Open.md) | 打开文件，append=true 时为追加模式 |
 | [`Close`](Close.md) | 关闭文件 |
 | [`IsOpen`](IsOpen.md) | 检查文件是否已打开 |