Renumber spec 001 decision placeholders to D-040–D-051; record the Danish publication

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

src/worker/translate.worker.ts

@@ -1,5 +1,5 @@
 /**
- * Transcript-translation Web Worker (D-WS4b): Opus-MT through
+ * Transcript-translation Web Worker (D-045): Opus-MT through
  * Transformers.js, off the main thread (D-003).
  *
  * A dedicated worker rather than a message type on the Whisper worker: