What problem does it solve? When multiple Claude Code sessions run in parallel on the same project, they lack a way to exchange questions, announcements, and design feedback asynchronously. This Skill standardizes how sessions post to shared bulletin board topics so context is not lost between sessions. ## Core Features & Use Cases - Four asynchronous message types: questions, announcements, opinion solicitation, and pre-touch conflict checks, all posted as logs to board-tagged topics. - Discussion topic creation: creates [議論] activities with verifiable goals when feedback requires multiple rounds or the target session is offline. - Boundary rules: routes live conversations to SendMessage, work requests to check-in, and human escalations to ask-compose instead of the board. - Use Case: Before editing a shared README, a session checks for an existing board topic on the parent topic, posts a heads-up log prefixed with its session alias, and notifies relevant sessions via SendMessage. ## Quick Start Ask the AI to post a question to the bulletin board topic for other sessions to answer asynchronously.