docs(changelogs-v2): #5912/#5916/#5914 前端 verified,#5915 not_required

#5912 改期残留三字段消费 frontend_ref=6c417cac
#5916 核单两报表瘦身 frontend_ref=ea2916fc
#5914 换版原因渲染 frontend_ref=a254f29f
#5915 删换车请求状态实证 not_required frontend_ref=58428593

changelogs-v2/2026-08/12_5915_看板删除换车请求状态-修改接口-管理后台.md

@@ -7,9 +7,9 @@ change_type: "修改接口"
 author: "wx(GIT)"
 backend_status: "deployed"
 gateway_status: "verified"
-frontend_status: "pending"
+frontend_status: "not_required"
 frontend_owner: "mmg"
-frontend_ref: ""
+frontend_ref: "58428593"
 target_release: ""
 verified_at: "2026-08-12"
 status_note: "后端已删除并部署测试服，API 实测通过。看板「换车请求」状态依赖 fleet_change_request 表，该表 M1 从未落地：change_requested 派生态恒为空、计数恒 0、筛选恒返空，是无效展示项，按 wx 指示整体删除。实测 summary：statusOptions=[unassigned,holding,assigned,completed,canceled]（无换车请求）、statusCounts 无 changeRequested 字段；statuses=change_requested 现按 100001 参数非法拒绝（原恒返空）。前端待接入（pending）：若看板状态下拉/筛选仍硬编码「换车请求」项需同步移除；若纯渲染后端 statusOptions 则自动受益。"