--snapshots is a range scan over SCHFS_SNAP_OBJECTID, printing each
retained root's id, name, block and the generation it was taken at. The
name is printed with an explicit precision: it is bounded but a damaged
image need not have terminated it.
mkschfs grows --snapshot NAME, which takes one of the finished tree. It
runs after the commit, because a snapshot names a *committed* root --
taking it before would record a root that exists only in memory.
Verified end to end: an image built with --snapshot golden lists the
snapshot and still passes --check. An image without one prints "no
snapshots" rather than nothing at all.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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