feat: 接入新参数：套餐分配生效条件选择，资产详情前代后代换货标识

openspec/changes/update-asset-exchange-generation-links/proposal.md

@@ -24,3 +24,5 @@
   - `src/views/asset-management/asset-information/components/BasicInfoCard.vue`
 - API contract:
   - `GET /api/admin/assets/resolve/{identifier}`
+  - Response field: `exchange_trace.previous_asset` and `exchange_trace.next_asset`
+  - Related asset item fields: `asset_type:string`, `asset_id:int64|null`, `identifier:string`, `exchange_no:string`, `can_view:bool`

openspec/changes/update-asset-exchange-generation-links/specs/asset-information/spec.md

@@ -2,7 +2,7 @@
 
 ### Requirement: Asset Exchange Generation Trace Display
 
-The asset information page SHALL display exchange generation relationships exclusively from `exchange_trace.previous_asset` and `exchange_trace.next_asset` returned by `GET /api/admin/assets/resolve/{identifier}`. The frontend MUST NOT infer the exchange chain from asset status, generation, or exchange status.
+The asset information page SHALL display exchange generation relationships exclusively from `exchange_trace.previous_asset` and `exchange_trace.next_asset` returned by `GET /api/admin/assets/resolve/{identifier}`. The frontend MUST NOT infer the exchange chain from asset status, generation, exchange order status, or any field outside `exchange_trace`.
 
 #### Scenario: Display previous asset for a replacement asset
 
@@ -10,6 +10,7 @@ The asset information page SHALL display exchange generation relationships exclu
 - **WHEN** 解析响应包含非空的 `exchange_trace.previous_asset`
 - **THEN** 页面 MUST 显示“换货新资产”标签
 - **AND** 页面 MUST 展示前代资产的标识符和换货单号
+- **AND** 页面 MUST use `previous_asset.identifier` and `previous_asset.exchange_no` as the displayed source values
 
 #### Scenario: Display next asset for a replaced asset
 
@@ -17,12 +18,14 @@ The asset information page SHALL display exchange generation relationships exclu
 - **WHEN** 解析响应包含非空的 `exchange_trace.next_asset`
 - **THEN** 页面 MUST 显示“已换出旧资产”标签
 - **AND** 页面 MUST 展示后代资产的标识符和换货单号
+- **AND** 页面 MUST use `next_asset.identifier` and `next_asset.exchange_no` as the displayed source values
 
 #### Scenario: Display both relationships for an intermediate asset
 
 - **GIVEN** 用户正在查看位于换货链中间的资产
 - **WHEN** 解析响应同时包含非空的 `previous_asset` 和 `next_asset`
 - **THEN** 页面 MUST 同时展示“换货新资产”和“已换出旧资产”两个关联区域
+- **AND** 两个区域 MUST use their corresponding relationship item values independently
 
 #### Scenario: Hide absent exchange relationship
 
@@ -31,9 +34,17 @@ The asset information page SHALL display exchange generation relationships exclu
 - **THEN** 页面 MUST NOT 展示对应的换货关联区域
 - **AND** 前端 MUST NOT 根据资产状态、世代编号、换货单状态或其他字段推导该区域
 
+#### Scenario: Display no exchange relationship for unrelated asset
+
+- **GIVEN** 用户正在查看无前代和后代换货关系的资产
+- **WHEN** 解析响应未返回 `exchange_trace` 或 `exchange_trace` 内两个关联项均为空
+- **THEN** 页面 MUST NOT 展示“换货新资产”标签
+- **AND** 页面 MUST NOT 展示“已换出旧资产”标签
+- **AND** 页面 MUST NOT render an empty exchange relationship placeholder
+
 ### Requirement: Exchange Related Asset Navigation Authorization
 
-The asset information page SHALL allow navigation to a related exchange asset only when that relationship item has `can_view=true`.
+The asset information page SHALL allow navigation to a related exchange asset only when that relationship item has `can_view=true`. When `can_view=false`, the relationship item SHALL remain visible as text only and MUST NOT provide any asset-detail navigation affordance.
 
 #### Scenario: Navigate to authorized related asset
 
@@ -41,6 +52,7 @@ The asset information page SHALL allow navigation to a related exchange asset on
 - **WHEN** 用户点击关联资产标识符
 - **THEN** 系统 MUST 跳转到该关联资产的资产详情
 - **AND** 跳转 MUST 使用关联项返回的 `identifier`
+- **AND** 页面 MUST NOT reconstruct the target identifier from the current asset or exchange order
 
 #### Scenario: Render unauthorized related asset as text
 
@@ -49,12 +61,29 @@ The asset information page SHALL allow navigation to a related exchange asset on
 - **THEN** 页面 MUST 展示关联资产标识符和换货单号
 - **AND** 页面 MUST NOT 将关联资产标识符渲染为可点击跳转操作
 
+#### Scenario: Render nullable related asset ID without navigation
+
+- **GIVEN** 换货关联资产项的 `asset_id=null`
+- **AND** 该关联资产项的 `can_view=false`
+- **WHEN** 页面渲染换货关联区域
+- **THEN** 页面 MUST 展示关联资产标识符和换货单号
+- **AND** 页面 MUST NOT depend on `asset_id` to render the relationship text
+- **AND** 页面 MUST NOT provide navigation to the related asset
+
 ### Requirement: Exchange Trace Response Contract
 
-The frontend asset resolve contract SHALL support optional `exchange_trace.previous_asset` and `exchange_trace.next_asset` items, each with `asset_type`, `asset_id`, `identifier`, `exchange_no`, and `can_view`.
+The frontend asset resolve contract SHALL support optional `exchange_trace.previous_asset` and `exchange_trace.next_asset` returned by `GET /api/admin/assets/resolve/{identifier}`. Each non-empty relationship item SHALL preserve `asset_type:string`, `asset_id:int64|null`, `identifier:string`, `exchange_no:string`, and `can_view:bool`.
 
 #### Scenario: Read exchange trace response fields
 
 - **WHEN** 前端解析 `GET /api/admin/assets/resolve/{identifier}` 响应
 - **THEN** 前端类型 MUST 支持 `exchange_trace.previous_asset` 和 `exchange_trace.next_asset`
 - **AND** 每个非空关联项 MUST 支持读取 `asset_type`、`asset_id`、`identifier`、`exchange_no`、`can_view`
+- **AND** `asset_id` MUST allow `null` for no-permission relationship items
+- **AND** `previous_asset` and `next_asset` MUST each allow `null`, empty, or omitted values
+
+#### Scenario: Preserve asset type in exchange trace item
+
+- **WHEN** 解析响应返回 `exchange_trace.previous_asset` 或 `exchange_trace.next_asset`
+- **THEN** 前端类型 MUST preserve `asset_type` as a string value such as `device` or `card`
+- **AND** 页面 logic MUST NOT assume all related exchange assets are the same type as the current asset