修复: status→enum + type alias(SMELL-P1-6)

crates/df-storage/src/crud/task_link_repo.rs

@@ -328,6 +328,7 @@ mod tests {
     use super::*;
     use crate::crud::TaskRepo;
     use crate::models::TaskRecord;
+    use df_types::types::{ProjectStatus, TaskStatus};
 
     /// 构造一条 TaskRecord fixture(18 字段全填,queue 默认 todo)。
     fn trec(id: &str, project_id: &str) -> TaskRecord {
@@ -336,7 +337,7 @@ mod tests {
             project_id: project_id.to_string(),
             title: format!("task-{id}"),
             description: String::new(),
-            status: "todo".to_string(),
+            status: TaskStatus::Todo,
             priority: 1,
             branch_name: None,
             assignee: None,
@@ -369,7 +370,7 @@ mod tests {
                 id: "proj-1".to_string(),
                 name: "proj-1".to_string(),
                 description: String::new(),
-                status: "active".to_string(),
+                status: ProjectStatus::Planning,
                 idea_id: None,
                 path: None,
                 stack: None,