feat(mockups): slot 17 voyage with real content

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

docs/DECISIONS.md

@@ -74,3 +74,7 @@ persistent side panel. No new dependency.
 read-only into the container. **Why:** the audio, lyrics and art are Jorge Rivera-Herrans' copyrighted
 work; committing them would push them to Gitea and bake 1.5 GB into the image. The user chose this
 ("Mount it, never commit"). Range requests are handled in `src/content/routes.ts` so audio can seek.
+
+## 2026-10-30 — three.js allowed in mockup 17
+
+**Decision:** mockup 17 (Voyage with real content) may use three.js; it iterates on 16. No new dependency.