Anonymize clip names as Clip 1..6 (URL-safe slugs clip-N)

Remove raw-named clip dirs (renamed to clip-N)

Anonymize methods as A/B/C/D with per-clip random order

Remove method-named audio (replaced by anonymized A/B/C/D)

Update index for 6 clips

Drop 2 clips (15740649, 15747184)

Re-encode baseline WAVs as basic IEEE_FLOAT (was EXTENSIBLE, fails Chrome decodeAudioData)

Remove orphan FLAC files (replaced by .wav)

Re-encode baseline audio to pcm_f32le 44.1kHz 4ch (fix decodeAudioData)

Initial user study viewer with 8 clips x 4 baselines

initial commit