rebuild: split core into separate repo; move wg-go integration to internal/ctr/corebind

- go.mod: require git.zkcoi.com/zkcoi/meshray/core, replace => ../Meshray
- internal/ctr/corebind: EnhancedBind + registry + adapter (wg-go integration isolated)
- cmd/mr-wg migrated from old core/cmd/meshray-core
- core/ removed; CHANGELOG updated; fix checkdb vet warning

internal/service/device.go

@@ -32,7 +32,7 @@ func NewDeviceService(store *sqlite.Store, ctrClient ctr.Client) *DeviceService
 // GetDevice 获取设备详情
 func (s *DeviceService) GetDevice(id uint64) (*model.Device, error) {
 	var device model.Device
-	err := s.store.DB().Preload("Network").First(&device, id).Error
+	err := s.store.DB().First(&device, id).Error
 	if err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			return nil, errors.New("设备不存在")
@@ -45,7 +45,7 @@ func (s *DeviceService) GetDevice(id uint64) (*model.Device, error) {
 // ListAllDevices 获取所有设备列表
 func (s *DeviceService) ListAllDevices() ([]model.Device, error) {
 	var devices []model.Device
-	err := s.store.DB().Preload("Network").Find(&devices).Error
+	err := s.store.DB().Find(&devices).Error
 	return devices, err
 }