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>

packages/i18n/locales/ru/common.json

@@ -29,7 +29,11 @@
     "collection": "Коллекция",
     "history": "История",
     "likes": "Лайки",
-    "dislikes": "Дизлайки"
+    "dislikes": "Дизлайки",
+    "uploads": "Предложения",
+    "suggest": "Предложить треки",
+    "my_uploads": "Мои предложения",
+    "upload_queue": "Очередь на добавление"
   },
   "profile": {
     "menu": "Меню профиля",