Prior rendering let <img> flow naturally (h-auto), so subpixel aspect
mismatches between DB dims and natural file dims caused img to over-
flow the placeholder div — manifesting as gaps or content overlap
between consecutive pages. Switching to absolute inset-0 +
object-contain pins the img to div dimensions regardless.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>