feat: 资产标识符标准化、资产历史订单查询及导入虚拟号强制验证

主要变更：
- 新增 AssetIdentifier 模型及 Store，统一管理资产标识符（ICCID/IMEI/SN 等）
- 新增迁移：asset_identifier 表、order 表新增 asset_identifier 字段、iot_card.virtual_no NOT NULL 约束
- 资产 Handler/Service/Route 全面重构，支持标识符路由查询与解析
- 新增资产历史订单查询接口，支持跨设备/卡/钱包维度的订单聚合
- 设备与物联卡导入任务强制校验虚拟号，缺失时直接拒绝
- Excel 工具函数优化，前端导入指引文档同步更新
- 归档三个 OpenSpec 提案：asset-identifier-standardization、asset-historical-orders、import-mandatory-virtual-no
- 更新 OpenAPI 文档及相关 DTO

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/model/dto/device_dto.go

@@ -65,11 +65,11 @@ type GetDeviceByIdentifierRequest struct {
 }
 
 type DeleteDeviceRequest struct {
-	ID uint `path:"id" description:"设备ID" required:"true"`
+	VirtualNo string `path:"virtual_no" description:"设备虚拟号" required:"true"`
 }
 
 type ListDeviceCardsRequest struct {
-	ID uint `path:"id" description:"设备ID" required:"true"`
+	VirtualNo string `path:"virtual_no" description:"设备虚拟号" required:"true"`
 }
 
 type DeviceCardBindingResponse struct {
@@ -89,9 +89,10 @@ type ListDeviceCardsResponse struct {
 }
 
 type BindCardToDeviceRequest struct {
-	ID           uint `path:"id" description:"设备ID" required:"true"`
-	IotCardID    uint `json:"iot_card_id" validate:"required,min=1" required:"true" minimum:"1" description:"IoT卡ID"`
-	SlotPosition int  `json:"slot_position" validate:"required,min=1,max=4" required:"true" minimum:"1" maximum:"4" description:"插槽位置 (1-4)"`
+	VirtualNo    string `path:"virtual_no" description:"设备虚拟号" required:"true"`
+	ID           uint   `json:"-"`
+	IotCardID    uint   `json:"iot_card_id" validate:"required,min=1" required:"true" minimum:"1" description:"IoT卡ID"`
+	SlotPosition int    `json:"slot_position" validate:"required,min=1,max=4" required:"true" minimum:"1" maximum:"4" description:"插槽位置 (1-4)"`
 }
 
 type BindCardToDeviceResponse struct {
@@ -100,8 +101,8 @@ type BindCardToDeviceResponse struct {
 }
 
 type UnbindCardFromDeviceRequest struct {
-	ID     uint `path:"id" description:"设备ID" required:"true"`
-	CardID uint `path:"cardId" description:"IoT卡ID" required:"true"`
+	VirtualNo string `path:"virtual_no" description:"设备虚拟号" required:"true"`
+	ICCID     string `path:"iccid" description:"IoT卡ICCID" required:"true"`
 }
 
 type UnbindCardFromDeviceResponse struct {