Opt-in din builder (checkbox music, default off). Orchestrator-only: parintele
detine AudioContext (reutilizeaza beep._ctx); camerele nu stiu de muzica.
- arpegiu pentatonica minora (oscilatoare sine scurte), tempo ~1.8x pe ultimul
minut (legat de _deadline-ul Timer Calm); fara timer -> loop calm fara accelerare
- buton 🎵/🔇 in bara chrome (#btn-music)
- duck pe voce: voiceSay onstart/onend regleaza gain (vocea are prioritate)
- fallback fara AudioContext -> no-op, buton ascuns (zero penalizare)
- porneste la start + resume; stop la showFinale + toggle
- hook test window.__music; exemplu-campanie.html regenerat (ramane opt-in off)
Smoke 30/30 (test nou "muzica ambient": opt-in, start, tempo sub 1 min, duck, toggle).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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