Maintainer direction: this PR's one goal is the versioned layout, the same
one box#79 built and rig#36 ported — the release flow (tags, release.yml,
prebuilt assets, CHANGELOG) is its own PR later, the shape rig#40 has.
So: release.yml, changelog-section.sh, CHANGELOG.md and the asset-aware
installer channels leave this branch, and in their place cast gets the
family layout for real:
- install.sh lands each build at $DEST/versions/<package.json version>,
'current' names the default (atomic rename flips), $BINDIR/cast points
through it. Converging no-op on an installed version (nothing rebuilt),
CAST_REINSTALL=1 replaces, a new version installs beside and becomes
default. Pre-versioning flat installs migrate in place, bit for bit.
CAST_INSTALL_SOURCE=<dir|tarball> installs locally (CI/tests, rig's
RIG_INSTALL_SOURCE precedent). No flip gate: box refuses under live
boxes, rig warns on a converged host — cast is an API client, a flip
strands nothing, 'cast use <old>' is one command away.
- bin/cast grows the layout verbs in bash (they must work when dist/ is
broken): versions (marks current+running), use (atomic flip, then
asserts the chain ANSWERS the new version), uninstall (consent gate,
CURRENT guard, dangling-current guard, ends with the absence assert).
valid_version/pkg_version are byte-identical copies in both files; a
test diffs them so the gates cannot drift.
- cast --version stays: package.json is the single source of truth,
printed with the install root, rig-style.
- ci.yml gains the install job: the real installer, from this checkout,
layout asserted, converge no-op asserted, uninstall --all asserted
absent — the box CI precedent.
- Tests drive the REAL install.sh and bin/cast offline (npm shim, local
source): the layout, the chain answering end to end, no-op/reinstall/
side-by-side/migration semantics, the hostile-version gates, refs/heads
download, every uninstall refusal.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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