P3: normalize int32 PIL I-mode values by dtype max instead of raw passthrough P4: clamp alpha to [0,1] instead of min-max stretching Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
P3: normalize int32 PIL I-mode values by dtype max instead of raw passthrough P4: clamp alpha to [0,1] instead of min-max stretching Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>