chore(traceability): shift this branch's ids clear of master's

Master allocated DR-224 and UT-211 while this branch was in flight — the third
collision on this work. Everything here moves up by one: DR-224..236 become
DR-225..237, UT-211..213 become UT-212..214. UR-079, UR-080 and IR-033 were
still free and are unchanged.

Mechanical, and matched on each row's own text rather than on its number, so a
row cannot be shifted twice or the wrong one caught. Master's DR-224 (the
background-audio toggle) and UT-211 are untouched.

src/lib/api/repository-client.ts

@@ -260,7 +260,7 @@ export class RepositoryClient {
    * start position on an HLS playlist makes Jellyfin reject every segment behind
    * it with `400` (DR-181). Resume by seeking once loaded.
    *
-   * TRACES: UR-070, UR-079 | DR-224, DR-226, DR-227 | UT-212
+   * TRACES: UR-070, UR-079 | DR-225, DR-227, DR-228 | UT-213
    */
   async getStreamSelection(
     itemId: string,