Fix ：编辑按钮保留历史记录

main.go

@@ -427,6 +427,16 @@ func handleTask(w http.ResponseWriter, r *http.Request) {
                 Time:  now.Add(time.Duration(i-90) * time.Minute),
             }
         }
+    } else {
+        mu.RLock()
+        if existing, ok := tasks[task.ID]; ok {
+            task.History = existing.History
+            task.InStock = existing.InStock
+            task.LastCheck = existing.LastCheck
+            task.Status = existing.Status
+            task.Notified = existing.Notified
+        }
+        mu.RUnlock()
     }
     
     mu.Lock()