fix(rhi): Fix RHI abstraction layer API docs per api-skill.md template

- Rename texture/dtor.md to destructor.md per template spec
- Remove duplicate non-hyphenated fence docs (getnativehandle.md, issignaled.md, getcompletedvalue.md)
- Fix template field issues:
  - swap-chain, command-queue: 类型 now uses 'class (abstract)'
  - sampler: 头文件 now uses full path 'XCEngine/RHI/RHISampler.h'
  - types: 类型 fixed from 'structs' to 'struct'
  - enums: 类型 fixed from 'enums' to 'enum class'
- Fix include paths in command-queue and pipeline-layout code examples
- Create missing constructor/destructor docs for 11 classes:
  buffer, texture, shader, device, command-list, command-queue,
  fence, sampler, swap-chain, pipeline-state, pipeline-layout
- Update class overview pages to include constructor/destructor entries

docs/api/rhi/swap-chain/swap-chain.md

@@ -2,7 +2,7 @@
 
 **命名空间**: `XCEngine::RHI`
 
-**类型**: `class` (抽象基类)
+**类型**: `class` (abstract)
 
 **头文件**: `XCEngine/RHI/RHISwapChain.h`
 
@@ -22,6 +22,8 @@
 
 | 方法 | 描述 |
 |------|------|
+| [`RHISwapChain`](constructor.md) | 默认构造函数 |
+| [`~RHISwapChain`](destructor.md) | 虚析构函数 |
 | [`Shutdown`](shutdown.md) | 关闭并释放资源 |
 | [`GetCurrentBackBufferIndex`](get-current-back-buffer-index.md) | 获取当前后台缓冲区索引 |
 | [`GetCurrentBackBuffer`](get-current-back-buffer.md) | 获取当前后台缓冲区 |