Mosaic Matrix Orchestrator Rail

Runtime-agnostic orchestration rail for delegating work to worker agents and enforcing mechanical quality gates.

Purpose

Decouple orchestration from any single agent runtime feature set
Persist state in repo-local .mosaic/orchestrator/ files
Emit structured events for Matrix transport and audit trails
Enforce rails before marking tasks complete

Components

protocol/ - JSON schemas for task/event payloads
controller/mosaic_orchestrator.py - deterministic controller loop
adapters/ - runtime adapter guidance

Repo Contract

The controller expects this layout in each bootstrapped repo:

.mosaic/orchestrator/
  config.json
  tasks.json
  state.json
  events.ndjson
  logs/
  results/

Quick Start

From a bootstrapped repo:

~/.config/mosaic/bin/mosaic-orchestrator-matrix-cycle
~/.config/mosaic/bin/mosaic-orchestrator-run --once
~/.config/mosaic/bin/mosaic-orchestrator-drain

Continuous loop:

~/.config/mosaic/bin/mosaic-orchestrator-run --poll-sec 10

Sync from docs/TASKS.md to queue:

~/.config/mosaic/bin/mosaic-orchestrator-sync-tasks --apply

Set worker command when needed:

export MOSAIC_WORKER_EXEC="codex -p"
# or
export MOSAIC_WORKER_EXEC="opencode -p"

Publish new orchestrator events to Matrix:

~/.config/mosaic/bin/mosaic-orchestrator-matrix-publish

Consume Matrix task messages into tasks.json:

~/.config/mosaic/bin/mosaic-orchestrator-matrix-consume

Matrix Note

This rail writes canonical events to .mosaic/orchestrator/events.ndjson. The Matrix transport bridge publishes those events into the configured control room and can consume task commands from that room.

Task injection message format (room text):

!mosaic-task {"id":"TASK-123","title":"Fix bug","command":"echo run","quality_gates":["pnpm lint"]}