one-pipe-system/openspec/changes/add-asset-estimated-final-expiry-display/specs/device-management/spec.md

ADDED Requirements

Requirement: Device Estimated Final Expiry Display

The device management list integration SHALL preserve and display the backend device-level estimated final package expiry fields without traversing bound cards or calculating package continuation dates in the frontend.

Scenario: Display exact device final expiry estimate

• GIVEN 设备列表接口返回 expiry_estimate_status=exact and estimated_final_expires_at
• WHEN 页面渲染设备列表行
• THEN 页面 MUST display a column labeled 预计套餐到期时间
• AND 该列 MUST format and display estimated_final_expires_at

Scenario: Display activation-pending device final expiry

• GIVEN 设备列表接口返回待激活等不可预计的 expiry_estimate_status
• WHEN 页面渲染设备列表行
• THEN 预计套餐到期时间 MUST display 待激活后起算
• AND 页面 MUST NOT traverse bound cards or display a fabricated date

Scenario: Highlight expiring device without reordering

• GIVEN 设备列表接口返回 is_expiring=true and days_until_final_expiry
• WHEN 页面渲染该设备的预计套餐到期时间
• THEN 页面 MUST apply the expiring visual treatment based on the backend fields
• AND 页面 MUST NOT change the ordinary device list sort order because of is_expiring

Scenario: Display no-package device placeholder

• GIVEN 设备列表记录没有可预计的最终到期时间
• WHEN 页面渲染预计套餐到期时间列
• THEN 页面 MUST display a stable placeholder
• AND 页面 MUST NOT use an individual package expiry as a substitute