feat: 任务轮询 + Token刷新容错 + 提交防抖 + 文件上传Hook (0.0.20)

### 任务状态轮询
- 新增 useTaskPolling hook：批量轮询非终态任务，递归 setTimeout + next_poll_ms 自适应间隔
- TaskHistory 集成批量轮询，OutputPreview 移除独立轮询改为状态转换监听
- batchTaskStatus 修复数组参数序列化（GET + 逗号拼接，避免 bracket 格式）
- 统一 POLLING_STATUSES 常量管理非终态状态

### Token 刷新容错
- 双轨刷新：主动续期（JWT exp 75% 时间点 setTimeout）+ 被动兜底（handle401）
- 刷新失败分级：永久失败(throw RefreshTokenExpiredError)→清token弹登录；临时失败(return null)→仅拒绝当前请求
- AppProvider 登录/自动登录/退出 启停主动刷新定时器

### 提交按钮防抖
- 2s 节流防抖（"你点击的太快了"）+ 二次确认弹窗（"您已提交，确认要再次提交吗？"）
- 修复 useAsyncMutation.execute 返回值判空（原 try/catch 死代码）

### 文件上传 Hook
- 新增 useFileUpload hook：封装 request.upload() 为 antd Upload 兼容 customRequest
- ImageInput/ImageListInput/AudioListInput 集成 customRequest
- uploadValidation beforeUpload 返回值修正(false→true)

### 其他
- AnnouncementDrawer 接入公告 API + EnumResolver
- billing/announcement/banner 服务模块完善
- CLAUDE.md 补充架构约定文档

src/pages/home/components/useUI/AudioListInput.tsx

@@ -7,6 +7,7 @@ import { Upload } from 'antd';
 import { InboxOutlined } from '@ant-design/icons';
 import type { UploadFile } from 'antd/es/upload';
 import type { WidgetProps } from './types';
+import { useFileUpload } from '@/hooks/use-api';
 
 const { Dragger } = Upload;
 
@@ -16,6 +17,8 @@ export function AudioListInput({ value, onChange, disabled, config }: WidgetProp
    const maxCount = (config.maxFiles as number) || 10;
    const filters = config.fileFilter as string[] | undefined;
 
+   const { customRequest } = useFileUpload();
+
    return (
       <Dragger
          multiple
@@ -25,9 +28,10 @@ export function AudioListInput({ value, onChange, disabled, config }: WidgetProp
                : '.wav,.mp3,.m4a,.flac'
          }
          fileList={fileList}
+         customRequest={customRequest}
          onChange={({ fileList: newList }) => onChange?.(newList)}
          disabled={disabled}
-         beforeUpload={() => false}
+         beforeUpload={() => true}
          maxCount={maxCount}
       >
          <p className="ant-upload-drag-icon">