feat: edc-web 支持车检器序列号输入与显示

- 自动化测试区域新增「车检器序列号」输入框
- 回车键自动触发「开始」按钮
- /api/automation/start 接收 detector_serial，写入 tb_pending_detector
- 测试操作页 + 测试信息页（全部/B2/B4）显示序列号，空时显示 '-'
- 页面加载和测试结束后焦点自动回到序列号输入框（全选），方便连续测试

edc-web/app/routes/test_op.py

@@ -13,6 +13,7 @@ from app.models import (
     get_wave_records,
     clear_serialnet_records,
     insert_log,
+    set_pending_detector_serial,
 )
 
 bp = Blueprint("test_op", __name__)
@@ -89,10 +90,15 @@ def api_automation_start():
     data = request.get_json()
     dnt_id = data.get("dnt_id")
     count = int(data.get("count", 1))
+    detector_serial = (data.get("detector_serial") or "").strip()
 
     device = get_device_by_id(dnt_id)
     target = f"{device['serial']}" if device else f"dnt_id={dnt_id}"
 
+    # 存储待插入的车检器序列号
+    if detector_serial:
+        set_pending_detector_serial(dnt_id, detector_serial)
+
     # 清除旧记录，然后插入第一条 0xB0
     clear_serialnet_records(dnt_id)
     record_id = insert_serialnet(dnt_id, COMMANDS["B0"])