feat: 围栏Tab布局重构、低精度过滤、蓝牙考勤去重、考勤删除API

- 围栏管理页面Tab移至顶部，设备绑定Tab隐藏地图全屏展示绑定矩阵
- 位置追踪新增"低精度"按钮，隐藏LBS/WiFi点(地图+折线+表格联动)
- 移除LBS/WiFi精度半径圆圈，仅通过标记颜色区分定位类型
- 蓝牙打卡(0xB2)自动创建考勤记录，含去重和WebSocket广播
- 新增考勤批量删除和单条删除API
- fence_checker补充json导入

via [HAPI](https://hapi.run)

Co-Authored-By: HAPI <noreply@hapi.run>

app/tcp_server.py

@@ -2064,12 +2064,53 @@ class TCPManager:
                                 beacon_major, beacon_minor, rssi,
                                 beacon_battery or 0,
                             )
+
+                            # Create AttendanceRecord for bluetooth punch
+                            from app.services.fence_checker import _has_attendance_today
+                            if not await _has_attendance_today(session, device_id, attendance_type):
+                                device = await session.get(Device, device_id)
+                                att_record = AttendanceRecord(
+                                    device_id=device_id,
+                                    imei=imei,
+                                    attendance_type=attendance_type,
+                                    attendance_source="bluetooth",
+                                    protocol_number=pkt["protocol"],
+                                    gps_positioned=False,
+                                    latitude=beacon_lat,
+                                    longitude=beacon_lon,
+                                    address=beacon_addr,
+                                    battery_level=device.battery_level if device else None,
+                                    gsm_signal=device.gsm_signal if device else None,
+                                    lbs_data={
+                                        "source": "bluetooth",
+                                        "beacon_mac": beacon_mac,
+                                        "beacon_name": beacon_cfg.name if beacon_cfg else None,
+                                    },
+                                    recorded_at=recorded_at,
+                                )
+                                session.add(att_record)
+                                logger.info(
+                                    "BT attendance created: IMEI=%s type=%s beacon=%s",
+                                    imei, attendance_type, beacon_mac,
+                                )
+                            else:
+                                logger.info(
+                                    "BT attendance dedup: IMEI=%s already has %s today",
+                                    imei, attendance_type,
+                                )
+
                 # Broadcast bluetooth punch
                 ws_manager.broadcast_nonblocking("bluetooth", {
                     "imei": imei, "record_type": "punch",
                     "beacon_mac": beacon_mac, "attendance_type": attendance_type,
                     "recorded_at": str(recorded_at),
                 })
+                ws_manager.broadcast_nonblocking("attendance", {
+                    "imei": imei, "attendance_type": attendance_type,
+                    "latitude": beacon_lat, "longitude": beacon_lon,
+                    "address": beacon_addr, "recorded_at": str(recorded_at),
+                    "source": "bluetooth",
+                })
             except Exception:
                 logger.exception("DB error storing BT punch for IMEI=%s", imei)