refactor: reduce quality findings

core/src/repositories/cas_repository.rs

@@ -328,9 +328,8 @@ pub trait CasRepository: Send + Sync {
     /// - 确保有写入权限
     async fn export_to_file(&self, id: &ObjectId, path: &Path) -> crate::Result<()> {
         let data = self.get(id).await?;
-        tokio::fs::write(path, data)
-            .await
-            .map_err(crate::Error::Io)?;
+        let write_result = tokio::fs::write(path, data).await.map_err(crate::Error::Io);
+        write_result?;
         Ok(())
     }
 }
@@ -356,6 +355,7 @@ mod tests {
         let id: ObjectId = "hash_abc123".to_string();
         map.insert(id.clone(), "value");
 
-        assert_eq!(map.get(&id), Some(&"value"));
+        let value = map.get(&id);
+        assert_eq!(value, Some(&"value"));
     }
 }

core/src/repositories/resource_repository.rs

@@ -366,7 +366,7 @@ pub trait ResourceRepository: Send + Sync {
     /// # 示例
     ///
     /// ```rust,ignore
-    /// repo.delete("res_001").await?;
+    /// let () = repo.delete("res_001").await?;
     /// ```
     async fn delete(&self, id: &str) -> crate::Result<()>;
 

core/src/repositories/translation_repository.rs

@@ -407,7 +407,7 @@ pub trait TranslationRepository: Send + Sync {
     ///
     /// ```rust,ignore
     /// // 删除错误的翻译
-    /// repo.delete("bad_translation_001").await?;
+    /// let () = repo.delete("bad_translation_001").await?;
     /// ```
     ///
     /// # 实现建议