Update API documentation and remove obsolete plan files

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2026-03-21 15:55:04 +08:00
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# Vector2::operator-
```cpp
Vector2 operator-(const Vector2& other) const
```
向量减法,将当前向量减去另一个向量。
**参数:**
- `other` - 要减去的向量
**返回:** `Vector2` - 相减结果向量
**线程安全:**
**复杂度:** O(1)
**示例:**
```cpp
Vector2 a(5.0f, 8.0f);
Vector2 b(2.0f, 3.0f);
Vector2 c = a - b; // (3.0f, 5.0f)
```
## 相关文档
- [Vector2 总览](vector2.md)
- [`operator+`](operator-add.md) - 加法
- [`operator-=`](operator-sub-assign.md) - 减法赋值