Implements the upgrade dispatcher (noop / dry-run / light delegation /
full path) and the snapshot writer/reader/list module. Full path snapshots
plist + db + admin-key + openclaw.json before mutating, runs the 6 phases
(pre-flight, snapshot, fetch+install, reconfigure, restart, post-flight),
and emits a heads-up before launchctl bootout per
notify_before_prod_service_restart.md policy.
mockExec/mockDoctor injection points let tests verify the phase ordering
without touching the real shell. fresh_install + rollback paths are
deferred to Bundle 3.
No cli.js citation needed: this is OCP-internal upgrade tooling with no
corresponding cli.js operation.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
