Whole-disc comparison at XBG7_COVER_SLACK=4 vs =1: 29 resources changed anchor,
3 stopped decoding, 6207 unchanged. Of the moved ones present in several
containers, 0 matched the sibling consensus before and 9 after -- it moved them
onto the block their own copies agree on and none away. 22 of 29 were carrying
ANOTHER resource's geometry under their own name, including a shift chain in
Stage_S28 where n054_bdy_l held n056_bdy_l's mesh and n056_bdy_l held
n055_bdy_l's. Confidently-wrong-under-the-right-name is invisible to every
count-based metric; the coverage invariant is what separated them.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>