feat(全局概览): 驳回/返工卡片可点击下钻明细抽屉

- 驳回/返工数字改为可点击按钮，打开明细抽屉(仿完成明细)
- RejectedRow 展示设备/被驳回工序/驳回人/返工给谁/原因/时间，行点击跳转任务全景
- 跟随顶部时间筛选(since/until)

frontend/src/services/dashboardApi.ts

@@ -39,6 +39,19 @@ export interface CompletedTask {
   completed_at: string;
 }
 
+export interface RejectedTask {
+  task_id: string;
+  task_name: string;
+  product_sn: string;
+  external_serial: string | null;
+  material_name: string;
+  spec_model: string;
+  rejected_by: string;
+  rework_assignee: string;
+  reject_reason: string | null;
+  rejected_at: string;
+}
+
 export interface PersonDevice {
   product_id: string;
   serial_number: string;
@@ -119,6 +132,14 @@ export async function fetchCompletedTasks(since?: string, until?: string): Promi
   return data;
 }
 
+export async function fetchRejectedTasks(since?: string, until?: string): Promise<RejectedTask[]> {
+  const params: Record<string, string> = {};
+  if (since) params.since = since;
+  if (until) params.until = until;
+  const { data } = await api.get<RejectedTask[]>("/dashboard/rejected-tasks", { params });
+  return data;
+}
+
 export async function fetchPeopleWorkload(): Promise<PersonWorkload[]> {
   const { data } = await api.get<PersonWorkload[]>("/dashboard/people-workload");
   return data;