MANDATORY: Follow the complete shared lifecycle contract in ${CLAUDE_PLUGIN_ROOT}/skills/shared/run-lifecycle.md with declared skill upgrade-larch.

MANDATORY: READ ENTIRE FILE before composing user-facing prose: ${CLAUDE_PLUGIN_ROOT}/skills/shared/readability-style.md.

Upgrade the larch plugin to the latest stable version. This skill is for the runtime-only remote marketplace install documented in docs/installation-and-setup.md. Contributors using a local checkout (claude --plugin-dir .) should git pull instead.

Flags

--run-id <ID>: Details live in ${CLAUDE_PLUGIN_ROOT}/skills/shared/run-id-flag.md.

Steps

Run the upgrade script:

"${CLAUDE_PLUGIN_ROOT}/scripts/larch.sh" upgrade-larch run

Verify the script exited successfully with no recovery banner. If it printed Binary verification passed. No upgrade needed., report that the current plugin and executable match, so no restart is required. If it printed LARCH_MARKETPLACE_RECONCILED=true, report the runtime-only marketplace migration. Otherwise, confirm the Installed larch plugin version (user scope): line matches the preflighted version. The claude plugin list block under it may also show project-scope rows that other clones pinned to older versions; that is expected and not a mismatch. Tell the user to restart Claude Code after an install or marketplace migration.