gstack-doctor --check gains --min-revision <v>|unknown: below it the revision
row FAILs with REVISION_BELOW_MINIMUM naming the Capy wrapper or
bin/gstack-upgrade; unknown says so and never claims the minimum. The runtime
and pins rows name a supported Bun found in $BUN_INSTALL/bin (not on PATH)
with the export/GSTACK_LAUNCH fix (gstack_bun_launch_dir, one helper in
bin/gstack-bun-version.sh). --for a planning-only workflow (autoplan, the plan
reviews, office-hours) reports a repo test-pin mismatch as SKIP pins
(planning-only; ...). New result codes UPGRADE_REFUSED, UPGRADE_FETCH_FAILED,
REVISION_BELOW_MINIMUM, CAPY_WRAPPER_STALE, INSTALL_UNVERIFIED with
troubleshooting anchors; REVISION_UNMET's fix names bin/gstack-upgrade.
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>
