feat(collect): support soft deletion of one task

app/gui/tabs/collect.py

@@ -178,6 +178,7 @@ class CollectTab(QWidget):
         self.table.setSelectionBehavior(QAbstractItemView.SelectRows)
         self.table.setSelectionMode(QAbstractItemView.SingleSelection)
         self.table.setEditTriggers(QAbstractItemView.NoEditTriggers)
+        self.table.setContextMenuPolicy(Qt.CustomContextMenu)
         self.table.horizontalHeader().setSectionResizeMode(QHeaderView.Stretch)
         for column in (3, 4):
             self.table.horizontalHeader().setSectionResizeMode(column, QHeaderView.ResizeToContents)
@@ -219,6 +220,7 @@ class CollectTab(QWidget):
         self.product_status_filter.currentIndexChanged.connect(self.refresh_tasks)
         self.status_filter.currentIndexChanged.connect(self.refresh_tasks)
         self.delete_batch_button.clicked.connect(self.delete_current_batch)
+        self.table.customContextMenuRequested.connect(self._show_task_context_menu)
         self.collect_button.clicked.connect(self.collect_old_data)
         self.stop_collect_button.clicked.connect(self.stop_collect)
         self.write_back_button.clicked.connect(self.write_back_old_data)
@@ -682,6 +684,85 @@ class CollectTab(QWidget):
         running = bool(self.collect_thread or self.write_back_thread)
         self.delete_batch_button.setEnabled((not running) and bool(self._selected_batch_id()))
 
+    def _show_task_context_menu(self, position):
+        index = self.table.indexAt(position)
+        if not index.isValid():
+            return
+        self.table.selectRow(index.row())
+        self.table.setCurrentIndex(index)
+        task = self.model.task_at(index.row())
+        if task is None:
+            return
+        menu = QMenu(self.table)
+        delete_action = menu.addAction("删除本条记录")
+        delete_action.setEnabled(
+            not bool(self.collect_thread or self.write_back_thread)
+            and getattr(task, "status", "") != "running"
+        )
+        delete_action.triggered.connect(self.delete_selected_task)
+        menu.exec(self.table.viewport().mapToGlobal(position))
+
+    def delete_selected_task(self, checked=False):
+        if self.collect_thread or self.write_back_thread:
+            self._set_status("采集或回写正在进行，不能删除记录", level="warning")
+            return
+        index = self.table.currentIndex()
+        task = self.model.task_at(index.row()) if index.isValid() else None
+        if task is None:
+            self._set_status("请选择要删除的记录", level="warning")
+            return
+        if getattr(task, "status", "") == "running":
+            self._set_status("任务正在处理，不能删除", level="warning")
+            return
+        batch = db.get_batch(task.batch_id, path=self.db_path)
+        batch_text = self._batch_label(batch) if batch is not None else task.batch_id
+        lines = [
+            "确定要删除本条本地记录吗？",
+            f"商品ID：{task.item_id}",
+            f"店铺：{task.account_name or task.alias}（{task.alias}）",
+            f"所属批次：{batch_text}",
+        ]
+        if int(getattr(task, "committed", 0) or 0) == 1:
+            lines.extend(
+                [
+                    "",
+                    "该商品已提交过蝦皮。本次仅删除本地记录，不会回滚蝦皮线上商品。",
+                ]
+            )
+        lines.extend(
+            [
+                "",
+                "删除后，该记录不会出现在①、②、③的列表、筛选、采集、生成、更新或回写范围。",
+                "不会删除原 Excel、本地图片或账号 Chrome 数据。",
+            ]
+        )
+        answer = QMessageBox.question(
+            self,
+            "删除本条记录",
+            "\n".join(lines),
+            QMessageBox.Yes | QMessageBox.No,
+            QMessageBox.No,
+        )
+        if answer != QMessageBox.Yes:
+            self._set_status("已取消删除本条记录")
+            return
+        try:
+            result = db.delete_task(
+                task.id,
+                reason="用户在导入采集页删除单条记录",
+                path=self.db_path,
+            )
+        except Exception as exc:
+            QMessageBox.warning(self, "删除本条记录", str(exc))
+            self._set_status(f"删除本条记录失败：{exc}", level="danger")
+            return
+        self.refresh_tasks()
+        if self.refresh_workflow_callback is not None:
+            self.refresh_workflow_callback()
+        message = f"已删除本地记录：商品 {result['item_id']}"
+        self._set_status(message, level="success")
+        QMessageBox.information(self, "删除本条记录", message)
+
     def delete_current_batch(self, checked=False):
         batch_id = self._selected_batch_id()
         if not batch_id: