Jason Woltje
30ef9ed66b
Root cause of a spawned agent's failed first send: fleet agents are born not knowing how to reach their peers. Inject a comms cheat-sheet + peer roster into each fleet agent's system prompt via composeContract (the runtime-agnostic path every `mosaic yolo <runtime>` agent hits), so it can reach the orchestrator and peers from its first turn. - src/fleet/comms-onboarding.ts (standalone, no fleet.ts coupling): parseRosterAgents (name/class/host/ssh/socket), renderPeerReach (data-driven agent-send command), buildFleetCommsBlock (own [host:session] identity + agent-send path + peer table + FLIP-to-reply + `agent send --verify`=ACCEPTED), readFleetCommsBlock (reads roster.yaml; '' when not a member). - launch.ts composeContract appends it only when MOSAIC_AGENT_NAME is set + the agent is in the roster (no-op for non-fleet launches). - roster.schema.json: optional per-agent host/ssh/socket (cross-host + socket addressing; manual cross-host listing is a pre-federation stopgap). Address rendering is fully data-driven per Mos's acceptance criteria: - cross-host: local → `-s <session>` (no -H); remote → `-H <ssh> -s <session>`. - socket: named → `-L <socket>`; unset → default socket (no -L) — matches the LIVE socket, never blindly inherits the roster's tmux.socket_name. Verified: 14 onboarding + 9 composeContract tests (parse, render local/remote/ fallback/equal-host/socket-none/named/combined, build, situational read + composeContract injection w/ correct cross-host+socket addrs, no-op when MOSAIC_AGENT_NAME unset). tsc/eslint/prettier/sanitize clean. Refs #620 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EsgTQzV5YUGk1JtCLP4B83
Mosaic Fleet Rosters
The local fleet canary uses a product-owned roster schema with site-owned roster files. Product examples live here; active local rosters should live outside the package, normally at:
~/.config/mosaic/fleet/roster.yaml
The default tmux socket is mosaic-factory so fleet commands do not touch the
default tmux server.
Examples
examples/minimal.yamlstarts one local canary slot.examples/local-canary.yamlstarts a small generic dogfood fleet.
Initialize a roster:
mosaic fleet init --profile minimal --write
mosaic fleet install-systemd
mosaic fleet start
mosaic fleet verify