feat(approval): 员工端待办/已办与通过驳回撤回 (#20)

- 审批中心三个 tab 接入待办/已办接口，支持状态+关键词筛选与下拉刷新
- 详情页新增通过（意见可选）、驳回（意见必填）、撤回（二次确认）
- 驳回/撤回后提供修改并重新提交入口，按钮按 permissions 显隐

src/api/approval/task/index.ts

@@ -1,5 +1,6 @@
 import request from '@/utils/request';
 import type { ApiResult } from '@/api';
+import type { ApprovalInstance } from '../model';
 import { THINK_API_URL } from '@/config/setting';
 
 /**
@@ -14,3 +15,44 @@ export async function getTodoCount() {
   }
   return Promise.reject(new Error(res.data.message));
 }
+
+/**
+ * 通过（意见可选）
+ */
+export async function approveTask(id: number, opinion?: string) {
+  const res = await request.post<ApiResult<ApprovalInstance>>(
+    THINK_API_URL + '/approval/task/' + id + '/approve',
+    { opinion }
+  );
+  if (res.data.code === 0 && res.data.data) {
+    return res.data;
+  }
+  return Promise.reject(new Error(res.data.message));
+}
+
+/**
+ * 驳回（意见必填）
+ */
+export async function rejectTask(id: number, opinion: string) {
+  const res = await request.post<ApiResult<ApprovalInstance>>(
+    THINK_API_URL + '/approval/task/' + id + '/reject',
+    { opinion }
+  );
+  if (res.data.code === 0 && res.data.data) {
+    return res.data;
+  }
+  return Promise.reject(new Error(res.data.message));
+}
+
+/**
+ * 撤回
+ */
+export async function withdrawInstance(id: number) {
+  const res = await request.post<ApiResult<ApprovalInstance>>(
+    THINK_API_URL + '/approval/instance/' + id + '/withdraw'
+  );
+  if (res.data.code === 0 && res.data.data) {
+    return res.data;
+  }
+  return Promise.reject(new Error(res.data.message));
+}