3fa45a47c6
New :cli JVM module producing an `amy` binary that drives Amethyst functionality headlessly. Identity and relay configuration sit at the root (`amy init`, `amy whoami`, `amy relay …`); Marmot/MLS lives under `amy marmot …` so future verbs (dm, feed, profile) can slot in cleanly. Marmot surface covered: - key-package publish / check - group create / list / show / members / admins / add / rename / promote / demote / remove / leave - message send / list (kind:9 inner events) - await key-package / group / member / admin / message / rename / epoch (non-interactive polling with --timeout; exit 124 on timeout) Wiring: - NostrClient + BasicOkHttpWebSocket.Builder, reusing the existing publishAndConfirmDetailed and fetchFirst accessories - MarmotManager from :commons with file-backed MlsGroupStateStore, KeyPackageBundleStore, and MarmotMessageStore (unencrypted — scratch harness use only) - each invocation is one-shot: prepare → syncIncoming → run command → persist → disconnect All commands emit one JSON object on stdout; diagnostics on stderr. Designed so shell harnesses can pipe through jq without bespoke parsing. https://claude.ai/code/session_01M6dCKAF5Y1VyHGZPjzwDXq