Slack × Claude Managed Agents

@mention a Claude Managed Agent in Slack and get the reply in-thread. `` Slack @mention ──▶ /slack/events ──▶ sessions.create (+ metadata) ──▶ 200 │ Claude runs to idle on Anthropic infra │ /cma-webhook ◀── session.status_idled ◀───────┘ │ └──▶ sessions.retrieve → read metadata → chat.postMessage ` The CMA session's metadata (slack_channel, slack_thread_ts`) is the entire routing state.