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/vector3/vector3.md

@@ -40,7 +40,7 @@ Vector3 是 XCEngine 中用于表示三维向量的核心类型，支持常见
 | [`Lerp`](lerp.md) | 线性插值 |
 | [`MoveTowards`](movetowards.md) | 移向目标点 |
 | [`Project`](project.md) | 投影到法向量上 |
-| [`ProjectOnPlane`](projectonplane.md) | 投影到平面上 |
+| [`ProjectOnPlane`](project-on-plane.md) | 投影到平面上 |
 | [`Angle`](angle.md) | 计算两个向量之间的夹角 |
 | [`Reflect`](reflect.md) | 反射向量 |
 | [`Normalized`](normalized.md) | 返回归一化副本（实例方法） |
@@ -49,12 +49,12 @@ Vector3 是 XCEngine 中用于表示三维向量的核心类型，支持常见
 
 | 运算符 | 描述 |
 |--------|------|
-| [`+`](operator_add.md), [`-`](operator_sub.md) | 向量加减 |
-| [`*`](operator_mul.md), [`/`](operator_div.md) | 向量与标量或分量相乘/相除 |
-| [`+=`](operator_add_assign.md), [`-=`](operator_sub_assign.md) | 复合赋值运算符 |
-| [`*=`](operator_mul_assign.md), [`/=`](operator_div_assign.md) | 复合赋值运算符 |
-| [`[]`](./operator_index.md) | 下标访问 x, y, z 分量 |
-| [`==`](operator_eq.md), [`!=`](operator_neq.md) | 相等性比较 |
+| [`+`](operator-add.md), [`-`](operator-sub.md) | 向量加减 |
+| [`*`](operator-mul.md), [`/`](operator-div.md) | 向量与标量或分量相乘/相除 |
+| [`+=`](operator-add-assign.md), [`-=`](operator-sub-assign.md) | 复合赋值运算符 |
+| [`*=`](operator-mul-assign.md), [`/=`](operator-div-assign.md) | 复合赋值运算符 |
+| [`[]`](./operator-index.md) | 下标访问 x, y, z 分量 |
+| [`==`](operator-eq.md), [`!=`](operator-neq.md) | 相等性比较 |
 | [`* (Quaternion)`](quaternion-multiply.md) | 用四元数旋转向量 |
 
 ## 实例方法