已取消工单在列表与详情展示取消原因来源操作人与时间

apps/backend/src/repositories/worker-platform/types.ts

@@ -382,6 +382,12 @@ export type WorkOrderRow = {
   category_name?: string
   worker_username?: string
   worker_display_name?: string
+  /** 取消信息，由工单查询从取消类事件推导，仅已取消工单有值。 */
+  cancel_reason?: string | null
+  cancel_event_type?: string | null
+  cancel_actor_type?: string | null
+  cancel_actor_id?: string | null
+  cancelled_at?: string | null
 }
 
 export type ProblemWorkOrderResolutionAction =

apps/backend/src/repositories/worker-platform/work-order-query-repo.ts

@@ -12,10 +12,43 @@ export const WORK_ORDER_SELECT = `
     COALESCE(share_summary.pending_share_count, 0)::int AS pending_share_count,
     wc.name AS category_name,
     wu.username AS worker_username,
-    wu.display_name AS worker_display_name
+    wu.display_name AS worker_display_name,
+    cancel_info.cancel_reason,
+    cancel_info.cancel_event_type,
+    cancel_info.cancel_actor_type,
+    cancel_info.cancel_actor_id,
+    cancel_info.cancelled_at
   FROM work_orders wo
   LEFT JOIN work_categories wc ON wc.id = wo.category_id
   LEFT JOIN worker_users wu ON wu.id = wo.assigned_worker_id
+  LEFT JOIN LATERAL (
+    SELECT
+      ev.event_type AS cancel_event_type,
+      ev.actor_type AS cancel_actor_type,
+      ev.actor_id AS cancel_actor_id,
+      ev.created_at AS cancelled_at,
+      BTRIM(COALESCE(
+        NULLIF(BTRIM(COALESCE(ev.payload_json->>'reason', '')), ''),
+        NULLIF(BTRIM(COALESCE(ev.payload_json->>'note', '')), ''),
+        CASE ev.event_type
+          WHEN 'timeout_cancel_release' THEN '任务超时未完成，系统自动取消并退还押金'
+          WHEN 'timeout_cancel_deduct' THEN '任务超时未完成，系统自动取消并扣除押金'
+          ELSE ''
+        END
+      )) AS cancel_reason
+    FROM work_order_events ev
+    WHERE ev.work_order_id = wo.id
+      AND wo.status = 'cancelled'
+      AND ev.event_type IN (
+        'cancelled_by_admin',
+        'problem_cancel_release',
+        'problem_cancel_deduct',
+        'timeout_cancel_release',
+        'timeout_cancel_deduct'
+      )
+    ORDER BY ev.id DESC
+    LIMIT 1
+  ) cancel_info ON TRUE
   LEFT JOIN LATERAL (
     SELECT
       SUM(wos.quantity) FILTER (WHERE wos.status != 'cancelled') AS active_share_quantity,

apps/backend/src/services/worker-platform/work-order-display-mappers.ts

@@ -114,6 +114,15 @@ export function mapWorkOrderSharingWorkers(shares: WorkOrderShareRow[]) {
   return [...workers.values()]
 }
 
+/** 取消来源：由触发取消的事件类型推导，用于列表与详情展示。 */
+function resolveWorkOrderCancelSource(cancelEventType: string | null | undefined) {
+  const eventType = String(cancelEventType || '').trim()
+  if (eventType === 'cancelled_by_admin') return '后台撤单'
+  if (eventType.startsWith('problem_')) return '问题单处置'
+  if (eventType.startsWith('timeout_')) return '超时自动取消'
+  return eventType || '未知来源'
+}
+
 export function mapWorkOrderAdmin(workOrder: WorkOrderRow, shares?: WorkOrderShareRow[]) {
   const activeShareQuantity = Math.max(0, Number(workOrder.active_share_quantity || 0))
   const pendingShareCount = Math.max(0, Number(workOrder.pending_share_count || 0))
@@ -232,6 +241,16 @@ export function mapWorkOrderAdmin(workOrder: WorkOrderRow, shares?: WorkOrderSha
     acceptance: mapAcceptanceForResponse(workOrder.acceptance_json),
     draftAcceptance: mapAcceptanceForResponse(workOrder.draft_acceptance_json),
     problemNote: workOrder.problem_note || '',
+    cancel:
+      workOrder.status === WORK_ORDER_STATUS.CANCELLED
+        ? {
+            reason: String(workOrder.cancel_reason || ''),
+            source: resolveWorkOrderCancelSource(workOrder.cancel_event_type),
+            actorType: String(workOrder.cancel_actor_type || ''),
+            actorName: String(workOrder.cancel_actor_id || ''),
+            cancelledAt: workOrder.cancelled_at || null,
+          }
+        : null,
     worker: workOrder.assigned_worker_id
       ? {
           workerId: Number(workOrder.assigned_worker_id),