feat(web): suggest tracks, my uploads and admin upload queue screens (M5.5)

- Suggest tracks: drag-and-drop of files and folders with relative
  paths, streaming SHA-256 in a Web Worker (hash-wasm), duplicate
  precheck, batch reservation and tus-js-client upload (8 MB chunks,
  4 in parallel, token refresh on 401, resume of failed files).
- My uploads: statuses, rejection reasons, withdraw, quota meter.
- Upload queue (admin): status tabs, possible-duplicate filter, batches,
  metadata and storage editing, bulk approve / reject with a reason,
  import retry, and the queue settings form.
- Sidebar section for moderators and admins; ru / en strings.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/pages/uploads/common.tsx

@@ -0,0 +1,82 @@
+import type { components } from '@pipu/api-client';
+import { unwrap } from '@pipu/core';
+import { useQuery } from '@tanstack/react-query';
+import { useTranslation } from 'react-i18next';
+
+import { useSession } from '../../app/session';
+import { formatBytes } from '../../shared/lib/format';
+import { cx } from '../../shared/ui/ui';
+import s from '../page.module.css';
+import u from './uploads.module.css';
+
+export type UploadStatus = components['schemas']['UploadStatus'];
+export type UploadFile = components['schemas']['UploadFile'];
+
+const TONE: Record<UploadStatus, 'ok' | 'warn' | 'bad' | 'info' | 'muted'> = {
+  uploading: 'info',
+  processing: 'info',
+  pending_review: 'warn',
+  approved: 'info',
+  importing: 'info',
+  imported: 'ok',
+  import_failed: 'bad',
+  duplicate: 'muted',
+  invalid: 'bad',
+  rejected: 'bad',
+  withdrawn: 'muted',
+  expired: 'muted',
+};
+
+/** Статусы, которые ещё меняются сами (обработка, импорт) — список опрашивается. */
+export const MOVING: UploadStatus[] = ['uploading', 'processing', 'approved', 'importing'];
+
+export function UploadStatusBadge({ status }: { status: UploadStatus }) {
+  const { t } = useTranslation('admin');
+  return <span className={cx(s.badge, u[`tone_${TONE[status]}`])}>{t(`uploads.status.${status}`)}</span>;
+}
+
+export function useUploadQuota() {
+  const session = useSession();
+  return useQuery({
+    queryKey: ['upload-quota'],
+    queryFn: async () => unwrap(await session.client.GET('/api/v1/uploads/quota')),
+  });
+}
+
+/** «Очередь: 6,2 ГБ из 10 ГБ» — видят модераторы и админ (docs/uploads.md#3). */
+export function QuotaMeter() {
+  const { t, i18n } = useTranslation('admin');
+  const quota = useUploadQuota();
+  if (!quota.data) return null;
+  const q = quota.data;
+  const ratio = q.limit_bytes > 0 ? Math.min(q.used_bytes / q.limit_bytes, 1) : 1;
+  const fmt = (n: number) => formatBytes(n, i18n.language);
+  return (
+    <div className={u.quota}>
+      <span className={u.quotaText}>
+        {t('uploads.quota', { used: fmt(q.used_bytes), limit: fmt(q.limit_bytes) })}
+        {q.per_user_limit_bytes !== null &&
+          ` · ${t('uploads.quota_mine', { used: fmt(q.user_used_bytes), limit: fmt(q.per_user_limit_bytes) })}`}
+      </span>
+      <div className={u.progress} role="progressbar" aria-valuenow={Math.round(ratio * 100)} aria-valuemin={0} aria-valuemax={100}>
+        <span style={{ width: `${ratio * 100}%` }} />
+      </div>
+    </div>
+  );
+}
+
+/** Понятный текст причины: код из errors:<code> или текст отклонения админа. */
+export function useReasonText(): (reason: string | null) => string | null {
+  const { t, i18n } = useTranslation(['admin', 'errors']);
+  const tr = t as unknown as (k: string) => string;
+  return (reason) => {
+    if (!reason) return null;
+    const code = reason.split(':')[0]!.trim();
+    const key = `errors:${code}`;
+    if (i18n.exists(key)) {
+      const rest = reason.slice(code.length + 1).trim();
+      return rest ? `${tr(key)}: ${rest}` : tr(key);
+    }
+    return reason;
+  };
+}