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/player/streamTransport.ts

@@ -4,7 +4,7 @@
  * Extracted from `VideoPlayer.svelte` so the decision can be unit-tested — the
  * same pattern as `episodeStrip.ts` and `TrackList.logic.test.ts`.
  *
- * TRACES: UR-079 | DR-224 | UT-213
+ * TRACES: UR-079 | DR-225 | UT-214
  */
 
 import type { StreamSelection, Transport } from "$lib/api/bindings";
@@ -54,11 +54,11 @@ export function videoLoaderFor(
  * whenever the selection **object** is replaced — even with an identical URL and
  * transport — and the HLS effect's teardown/rebuild is not idempotent: it
  * destroys the hls.js instance and reattaches, which leaves the element with no
- * video until something forces another cycle. The pre-DR-224 code read a plain
+ * video until something forces another cycle. The pre-DR-225 code read a plain
  * URL *string*, so re-assigning the same value was a no-op and the effect stayed
  * put. Passing primitives restores that.
  *
- * TRACES: UR-079 | DR-224 | UT-213
+ * TRACES: UR-079 | DR-225 | UT-214
  */
 export function loaderForTransport(
   transport: Transport["type"],