fix: 补齐 ATX 控制器缺失接口并完成全项目 clippy -D warnings 修复

src/video/encoder/registry.rs

@@ -145,6 +145,7 @@ impl EncoderBackend {
     }
 
     /// Parse from string (case-insensitive)
+    #[allow(clippy::should_implement_trait)]
     pub fn from_str(s: &str) -> Option<Self> {
         match s.to_lowercase().as_str() {
             "vaapi" => Some(EncoderBackend::Vaapi),