39fb9108db
Pure arg builders (audio_ops) + thin runner (audio_run) + build_audio_media.py. Produces the 5 normalized soundtrack loops + a synthesized pink-noise bed under the gitignored sample_media/audio tree. 6 tests pass (white-noise integration runs against bundled imageio_ffmpeg). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>