New companion plugin (mc-plugin/) registers /mc as a native OpenClaw
slash command with 10 subcommands: state, history, restore, clear,
search, settings, compact, export. All commands work across multiple
agent workspaces and return instant responses (direct file reads,
no model invocation).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
