优化: R-PD-10 commands err_str helper 统一错误格式化(87 处)

mod.rs 加 pub fn err_str<E: ToString>,commands/ 10 文件 87 处 .map_err(|e| e.to_string()) → .map_err(err_str),残留 0(10 处复杂表达式 e 用于 format!/anyhow 保留)。行为零变化,统一入口为未来加日志/分类留点。批5,cargo workspace 0

src-tauri/src/commands/task.rs

@@ -8,7 +8,7 @@ use df_storage::models::TaskRecord;
 
 use crate::state::AppState;
 
-use super::now_millis;
+use super::{err_str, now_millis};
 
 /// 创建任务入参
 #[derive(Debug, Deserialize)]
@@ -37,7 +37,7 @@ pub async fn list_tasks(
         Some(pid) => state.tasks.query("project_id", &pid).await,
         None => state.tasks.list_all().await,
     };
-    result.map_err(|e| e.to_string())
+    result.map_err(err_str)
 }
 
 /// 按 id 查任务，找不到返回 Err(供前端详情页)
@@ -50,7 +50,7 @@ pub async fn get_task_by_id(
         .tasks
         .get_by_id(&id)
         .await
-        .map_err(|e| e.to_string())?
+        .map_err(err_str)?
         .ok_or_else(|| format!("任务 {} 不存在", id))
 }
 
@@ -79,7 +79,7 @@ pub async fn create_task(
         .tasks
         .insert(record.clone())
         .await
-        .map_err(|e| e.to_string())?;
+        .map_err(err_str)?;
     Ok(record)
 }
 
@@ -104,11 +104,11 @@ pub async fn update_task(
         .tasks
         .update_field(&id, &field, &value)
         .await
-        .map_err(|e| e.to_string())
+        .map_err(err_str)
 }
 
 /// 删除任务
 #[tauri::command]
 pub async fn delete_task(state: State<'_, AppState>, id: String) -> Result<bool, String> {
-    state.tasks.delete(&id).await.map_err(|e| e.to_string())
+    state.tasks.delete(&id).await.map_err(err_str)
 }