AVIF's quality scale is not perceptually comparable to JPEG/WebP:
libavif anchors its "good" default at 60, where Hugo's universal 75
produced visibly higher quality and larger files. AVIF now defaults to
60 while JPEG and WebP keep 75. An explicit imaging.quality,
imaging.avif.quality or a per-image qNN still wins.
Fixes#14979
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Bjørn Erik Pedersen
03b4b54220