Replace the single ethereal loop with the operator's chosen set — Music for
Manatees, Dewdrop Fantasy, Eastminster, Overheat, Concentration (Kevin MacLeod,
CC BY 4.0, drumless). The Music source now plays one track and every 5 min
crossfades to a random OTHER track (pure HEFScrub.pickNextIndex, never an
immediate repeat), altitude-independent, reusing the two audio elements; both
primed in-gesture for Safari. Intervals injectable via window.__hefMusicRotateMs
/ __hefMusicXfadeMs.
Media loudness-normalized + transcoded under the 25MB LFS limit (build_audio_media
MUSIC), committed via LFS; ethereal loop retired. CC-BY attribution added to
credits.html. Docs updated (music-candidate-pool = final set; audio-candidate-pool
ethereal section superseded).
+2 node unit (pickNextIndex), +2 e2e (music-playlist), audio-source spec updated.
40 unit + 49 e2e green; live probe confirms playback + rotation.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Operator kept Dream Culture + Silver Blue Light, rejected the rest (boring or
too much snare). Round-4 = 12 Kevin MacLeod CC-BY tracks, drumless confirmed
from his pieces.json instrument metadata, ranked by chord movement (best:
Impact Lento, Dreams Become Real, Aretes, When The Wind Blows, Reawakening,
Almost New). Lo-fi dropped. review_music.html rebuilt as the drumless cut.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Operator dropped binaural. New direction: mellow, soothing synth with real chord
movement. docs/music-candidate-pool.md = 12 ranked + spares, all CC0 (HoliznaCC0
lo-fi) or CC BY (Kevin MacLeod calming synth), verified live. Local review gallery
simulator/static/review_music.html (gitignored). Binaural doc parked with a pointer.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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