Every ./setup now removes the render dirs of hosts missing from the
installed-hosts record, so an install that rendered every host (632
SKILL.md, 34.7 MB under ~/.claude/skills/gstack) converges on its own
hosts. It runs per install, so two installs sharing one state root are
both cleaned, and never touches a recorded host, so ./setup --host codex
keeps a --host factory render.
The rules follow bin/gstack-relink: a symlink into the checkout (STRONG)
is removed; a file proven generated (WEAK: gen-skill-docs' banner, the
generator's exact openai.yaml shape, byte identity with the checkout, or
setup's runtime pointers naming it) is moved to
$GSTACK_STATE_ROOT/backups/host-renders/<ts>-<id>/; any other file,
including a link outside the checkout or bin/dev-setup's link to the
checkout itself, stays where it is. Only directories left empty are
removed. setup prints each kept path and a per-host summary, and
prune.log in the backup lists every path. A tree with nothing left to
remove is silent, so reruns print nothing.
gstack-upgrade/migrations/v1.91.50.0.sh records the hosts an existing
install serves and runs the same prune; a checkout no install points at
is left alone. The Hermes, OpenClaw and GBrain hints say to add the host
to the record before rendering it by hand.
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>
