docs(changelogs-v2): #6052/#6057 回写 not_required（frontend_owner=mmg）

changelogs-v2/2026-08/19_6057_多槽位越需求索引派车业务码拦截-修改接口-管理后台.md

@@ -8,10 +8,10 @@ change_type: "修改接口"
 backend_status: "deployed"
 gateway_status: "verified"
 frontend_status: "not_required"
-frontend_owner: ""
+frontend_owner: "mmg"
 frontend_ref: ""
 target_release: ""
-verified_at: ""
+verified_at: "2026-08-19"
 status_note: "后端完成：PR #6064 + #6065 已合并 dev-v3（584f3adc3 / b07855c228）并部署 TEST（hl-fleet-service Deploy task d6cb4687 + 3bed5be8，jar 01:27:55、双实例 01:28 重启）。越界索引由 500（vehicleType is required）收敛为 605911 业务码；快照车型兜底缺失拦成 605912。错误消息自解释，前端全局错误处理可直接展示，无需适配；派车看板正常只发送已声明/已增槽槽位，行为不变。"
 updated_at: "2026-08-19"
 base: "dev-v3"