docs: 重构 API 文档结构并修正源码准确性
- 重组文档目录结构: 每个模块的概述页移动到模块子目录 - 重命名 index.md 为 main.md - 修正所有模块文档中的错误: - math: FromEuler→FromEulerAngles, TransformDirection 包含缩放, Box 是 OBB, Color::ToRGBA 格式 - containers: 新增 operator==/!= 文档, 补充 std::hash DJB 算法细节 - core: 修复 types 链接错误 - debug: LogLevelToString 返回大写, timestamp 是秒, Profiler 空实现标注, Windows API vs ANSI - memory: 修复头文件路径, malloc vs operator new, 新增方法文档 - resources: 修复 Shader/Texture 链接错误 - threading: TaskSystem::Wait 空实现标注, ReadWriteLock 重入描述, LambdaTask 链接 - 验证: fix_links.py 确认 0 个断裂引用
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# ResourceHandle::Get
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```cpp
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T* Get() const
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```
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获取资源裸指针。返回句柄内部持有的资源指针,不进行任何引用计数操作。
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**参数:** 无
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**返回:** 资源裸指针,可能为 `nullptr`(当句柄为空时)
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**复杂度:** O(1)
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**示例:**
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```cpp
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ResourceHandle<Texture> tex = ResourceManager::Get().Load<Texture>("tex.png");
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Texture* raw = tex.Get();
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if (raw != nullptr) {
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uint32_t w = raw->GetWidth();
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}
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```
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## 相关文档
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- [ResourceHandle 总览](resourcehandle.md) - 返回类总览
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