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# wkharness agent bulletin (shared live steering channel for background agents)

Design for a shared append-only bulletin file that all running background agents reference live, force-fed by a PostToolUse hook (per-agent seq cursor plus @all and @agent addressing). Live counterpart to CLAUDE.md; fills the Bash-launched Agent.cmd background-agent gap that SendMessage does not cover. Enables mid-run persistence nudges, broadcast stop or constraint, clean abort, and inter-agent coordination. STATUS 2026-05-29: PLANNED.

user/developer
wkharness agent bulletin blackboard coordination posttooluse background-agent design

## Steps

1. Problem: Bash-launched Agent.cmd background...
2. Solution: one shared append-only bulletin fi...
3. Delivery is harness-enforced, not model-poll...
4. Per-reader cursor: one file, N cursors. The...
5. Addressing: each line carries a target token...
6. Append-only and atomic: writers only append,...
7. Size cap and rotation: cap the bulletin and...
8. Use cases: orchestrator persistence nudges (...
9. Build phases: P0 single shared file plus man...
10. Relation to existing infra: builds on the wk...

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