That fixed it — 157 meeting pages imported, 235 chunks created (previously all skipped as phantom "unchanged"). Also surfaced the root cause of the whole mess: duplicate pages from case-collision slugs (e.g.

...eVr6op

vs

...evr6op

) — macOS's case-insensitive filesystem plus mixed-case slug generation means some notes collide, which is almost certainly what's been wedging the incremental sync bookmark. Now let me embed the new chunks and verify July 28 is queryable.