diff --git a/src/frontend/src/components/EdictBoard.tsx b/src/frontend/src/components/EdictBoard.tsx
index 9d77e48..581c327 100644
--- a/src/frontend/src/components/EdictBoard.tsx
+++ b/src/frontend/src/components/EdictBoard.tsx
@@ -425,22 +425,13 @@ export default function EdictBoard() {
         ))}
         <span style={{ fontSize: 10, color: 'var(--muted)', marginLeft: 4 }}>活跃{activeCount} · 归档{archivedCount} · 共{topLevelTasks.length}</span>
         <button onClick={async () => {
-          // 一键归档已完成
           const pid = selectedProjectId;
           if (!pid) return;
-          const doneTasks = topLevelTasks.filter(t => t.status === 'done' && !t.archived);
-          if (doneTasks.length === 0) { toast('没有可归档的任务'); return; }
           try {
-            let count = 0;
-            for (const t of doneTasks) {
-              const res = await fetch(`/api/projects/${pid}/tasks/${t.id}`, {
-                method: 'PATCH', headers: { 'Content-Type': 'application/json' },
-                body: JSON.stringify({ archived: 1 }),
-              });
-              if (res.ok) count++;
-            }
-            toast(`📦 已归档 ${count} 个任务`);
-            loadV2Tasks();
+            const res = await fetch(`/api/projects/${pid}/tasks/archive-done`, { method: 'POST' });
+            const r = await res.json();
+            if (r.ok || r.count) { toast(`📦 已归档 ${r.count || 0} 个任务`); loadV2Tasks(); }
+            else toast('归档失败', 'err');
           } catch { toast('归档失败', 'err'); }
         }} style={{
           marginLeft: 'auto', padding: '3px 10px', borderRadius: 6, fontSize: 11,