feat(offline-downloads): implement offline download

web/src/api/client.ts

@@ -73,4 +73,5 @@ async function request<T = any>(url: string, options: RequestOptions = {}): Prom
 export { vfsApi, type VfsEntry, type DirListing } from './vfs';
 export { adaptersApi, type AdapterItem, type AdapterTypeField, type AdapterTypeMeta } from './adapters';
 export { shareApi, type ShareInfo, type ShareInfoWithPassword } from './share';
+export { offlineDownloadsApi, type OfflineDownloadTask, type OfflineDownloadCreate, type TaskProgress } from './offlineDownloads';
 export default request;

web/src/api/offlineDownloads.ts

@@ -0,0 +1,35 @@
+import request from './client';
+
+export interface TaskProgress {
+  stage?: string | null;
+  percent?: number | null;
+  bytes_total?: number | null;
+  bytes_done?: number | null;
+  detail?: string | null;
+}
+
+export interface OfflineDownloadTask {
+  id: string;
+  name: string;
+  status: 'pending' | 'running' | 'success' | 'failed';
+  result?: any;
+  error?: string | null;
+  task_info: Record<string, any>;
+  progress?: TaskProgress | null;
+  meta?: Record<string, any> | null;
+}
+
+export interface OfflineDownloadCreate {
+  url: string;
+  dest_dir: string;
+  filename: string;
+}
+
+export const offlineDownloadsApi = {
+  create: (payload: OfflineDownloadCreate) => request<{ task_id: string }>('/offline-downloads/', {
+    method: 'POST',
+    json: payload,
+  }),
+  list: () => request<OfflineDownloadTask[]>('/offline-downloads/'),
+  detail: (taskId: string) => request<OfflineDownloadTask>(`/offline-downloads/${taskId}`),
+};

web/src/api/tasks.ts

@@ -1,4 +1,5 @@
 import request from './client';
+import type { TaskProgress } from './offlineDownloads';
 
 export interface AutomationTask {
   id: number;
@@ -21,6 +22,8 @@ export interface QueuedTask {
   result?: any;
   error?: string;
   task_info: Record<string, any>;
+  progress?: TaskProgress | null;
+  meta?: Record<string, any> | null;
 }
 
 export const tasksApi = {
@@ -29,4 +32,4 @@ export const tasksApi = {
   update: (id: number, payload: AutomationTaskUpdate) => request<AutomationTask>(`/tasks/${id}`, { method: 'PUT', json: payload }),
   remove: (id: number) => request<void>(`/tasks/${id}`, { method: 'DELETE' }),
   getQueue: () => request<QueuedTask[]>('/tasks/queue'),
-};
+};