feat(设备列表): 新增 has_active_package 查询条件

- DTO ListDeviceRequest 增加 HasActivePackage *bool 字段（query/json: has_active_package）
- Service List 方法将 HasActivePackage 透传至 filters["has_active_package"]
- Store applyDeviceFilters 新增 applyHasActivePackageFilter：
  true  → EXISTS 子查询（生效中主套餐）
  false → NOT EXISTS 子查询
  均限制 master_usage_id IS NULL、deleted_at IS NULL，状态使用 constants.PackageUsageStatusActive

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/store/postgres/device_store.go

@@ -177,9 +177,27 @@ func (s *DeviceStore) applyDeviceFilters(query *gorm.DB, filters map[string]any)
 	if seriesID, ok := filters["series_id"].(uint); ok && seriesID > 0 {
 		query = query.Where("series_id = ?", seriesID)
 	}
+	if hasActive, ok := filters["has_active_package"].(bool); ok {
+		query = s.applyHasActivePackageFilter(query, hasActive)
+	}
 	return query
 }
 
+// applyHasActivePackageFilter 按"是否有生效中主套餐"过滤设备。
+// true: 设备在 tb_package_usage 中存在生效中(status=PackageUsageStatusActive)的主套餐记录；
+// false: 不存在上述记录。
+func (s *DeviceStore) applyHasActivePackageFilter(query *gorm.DB, hasActive bool) *gorm.DB {
+	subQuery := `SELECT 1 FROM tb_package_usage AS pu
+		WHERE pu.device_id = tb_device.id
+		  AND pu.status = ?
+		  AND pu.master_usage_id IS NULL
+		  AND pu.deleted_at IS NULL`
+	if hasActive {
+		return query.Where("EXISTS ("+subQuery+")", constants.PackageUsageStatusActive)
+	}
+	return query.Where("NOT EXISTS ("+subQuery+")", constants.PackageUsageStatusActive)
+}
+
 func (s *DeviceStore) applyActivationStatusFilter(query *gorm.DB, activationStatus int) *gorm.DB {
 	activeCondition := `EXISTS (
 		SELECT 1