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phase 2: agent mailbox for inter-agent coordination #56
Description
Tutti already supports handoff packets, prompt injection, and shared state files. What it does not have is an explicit in-run coordination primitive between agents.
This is the core Phase 2 coordination feature.
Scope:
- Append-only per-agent mailboxes under .tutti/state/mailbox
- CLI for send, read, and list
- Optional auto-injection of unread mailbox messages into prompt steps
- Leave real-time pub-sub as follow-on work once the file-backed model is proven
Outcome:
- The operator no longer has to act as the default message bus between agents.
Acceptance criteria:
- One agent can notify another mid-run without human relay
- Mailbox state is inspectable from CLI and available to workflows
Activity
[-]feat: agent-to-agent message 62F1 bus for inter-agent coordination[/-][+]phase 2: agent mailbox for inter-agent coordination[/+]