Teammates are independent Claude Code processes that read their own inbox
files via fs.watch. Relaying DMs through the lead caused three bugs:
lead responding instead of the teammate, duplicate messages from relay
loops, and teammates not responding to user due to conflicting prompts.
- Disable relayMemberInboxMessages for teammate DMs (teams.ts, index.ts)
- Add SendMessage(to="user") filter in captureSendMessages as safety net
- Generate deterministic messageId for inbox entries lacking one (sha256)
- Wrap notification instructions in agent block, italic task subject
- Style system comments in task view with blue background, hide avatar
- Update CLAUDE.md, research docs, and code comments with architecture
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