refactor(fleet): rename tmux socket mosaic-factory → mosaic-fleet
Pure rename of the named production-isolation socket to match the product brand (Mosaic Fleet), per Jason. Behavior is identical — only the socket NAME changes. - 6 example presets: socket_name: mosaic-factory → mosaic-fleet - fleet.ts: DEFAULT_SOCKET_NAME = 'mosaic-fleet' (+ all literals) - systemd units + READMEs, roster.schema.json, start-agent-session.sh - docs/guides + fleet PRD/TASKS + scratchpads; tests updated The PoC roster is socket-LESS (default socket, no -L), so it is unaffected. docs/fleet/north-star.md is intentionally EXCLUDED (owned by the in-flight doctrine PR #629 — its mosaic-factory references are renamed there to avoid a merge conflict). The live legacy canary fleet still running on the old socket is a separate retire/migrate op, not this PR. Single find/replace — target trivially swappable if the brand is reconsidered. Verified: 172 fleet + onboarding tests green; tsc/eslint/prettier/sanitize clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EsgTQzV5YUGk1JtCLP4B83
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@@ -7,10 +7,10 @@
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## Problem
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The durable tmux fleet runs on the isolated `mosaic-factory` socket. That isolation
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The durable tmux fleet runs on the isolated `mosaic-fleet` socket. That isolation
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(which protects the operator's default tmux) makes the fleet **invisible** to default
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tooling, and truth is split across three planes no single command joins — systemd
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(`systemctl --user`), tmux (`-L mosaic-factory`), and the process tree (`pstree`).
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(`systemctl --user`), tmux (`-L mosaic-fleet`), and the process tree (`pstree`).
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`agent tail` (`capture-pane`) returns **blank for full-screen TUIs**, and `agent send`
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confirms only keystroke injection, not acceptance. Net: the operator has near-zero
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observability and no safe way to watch a session.
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@@ -56,7 +56,7 @@ observability and no safe way to watch a session.
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## Acceptance criteria
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- `mosaic fleet ps` shows all 5 live sessions on `mosaic-factory` with correct
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- `mosaic fleet ps` shows all 5 live sessions on `mosaic-fleet` with correct
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pane/pid/idle and flags the dogfood **drift** (`canary-pi` runtime=pi but pane runs
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`dogfood-agent.py`) and the **boot-enable** gap (active but disabled).
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- Killing one agent's pane flips its row to dead/stale within one `interval`.
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@@ -72,7 +72,7 @@ observability and no safe way to watch a session.
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- Unit/CLI specs in `packages/mosaic/src/commands/fleet.spec.ts` (and a new
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`fleet-ps`/`watch`/`send-verify` spec) using the injected `CommandRunner` to assert
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exact tmux/systemd command construction and JSON shape (tenant+host present).
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- Situational: run against the live `mosaic-factory` fleet; capture `fleet ps` output,
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- Situational: run against the live `mosaic-fleet` fleet; capture `fleet ps` output,
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a kill-and-detect cycle, a read-only `watch`, and a `send --verify` pass/fail pair.
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## Known limitations
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@@ -7,18 +7,18 @@
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> Mission: `mvp-20260312` · PRD: [docs/fleet/PRD.md](./PRD.md) · North star: [docs/fleet/north-star.md](./north-star.md)
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> Status: `not-started` | `in-progress` | `done` | `blocked` | `failed`
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| id | status | description | depends_on | agent | pr | notes |
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| ------------- | ----------- | ------------------------------------------------------------------------------------------------------------------ | --------------------- | ----------- | --- | ----------------------------------------------------------------------------------------------------------------------------- |
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| FLEET-OBS-000 | done | Plan: north-star + Phase-2 PRD + workstream scaffolding | — | lead | — | persisted 2026-06-20 on `feat/fleet-observability` |
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| FLEET-OBS-001 | done | Heartbeat protocol v1 spec finalized in PRD + framework doc | FLEET-OBS-000 | lead | — | file-based `~/.config/mosaic/fleet/run/<agent>.hb`; spec in PRD |
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| FLEET-OBS-002 | in-progress | Implement heartbeat responder in `dogfood-agent.py` | FLEET-OBS-001 | fleet-coder | — | dispatched to ad-hoc `mosaic yolo` fleet agent (dogfood) |
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| FLEET-OBS-003 | done | `mosaic fleet ps` — join systemd+tmux+proc+idle+heartbeat; tenant+host tagged; drift + boot-enable flags; `--json` | FLEET-OBS-001 | worker | — | commit ab47831; LIVE-verified on mosaic-factory; caught canary-pi DRIFT + BOOT-ENABLE. Polish: idleSeconds parse returns null |
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| FLEET-OBS-004 | done | `mosaic agent watch <name>` — read-only join (no resize, no keystrokes) | FLEET-OBS-000 | worker | — | `attach -r`; verb wired |
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| FLEET-OBS-005 | done | `mosaic agent send --verify` — delivery/acceptance receipt | FLEET-OBS-000 | worker | — | --verify flag; draft-heuristic verify |
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| FLEET-OBS-006 | done | CLI specs for ps/watch/send-verify (tenant+host shape, command construction) | FLEET-OBS-003,004,005 | worker | — | 62 tests green (31 new); re-verified by lead |
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| FLEET-OBS-007 | not-started | Framework doc: fleet observability guide + verbs | FLEET-OBS-003,004,005 | lead | — | `docs/guides/` or `framework/tools/.../README` |
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| FLEET-OBS-008 | not-started | Independent review + dogfood verification on live fleet | FLEET-OBS-002..007 | reviewer | — | author ≠ reviewer; capture evidence in scratchpad |
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| FLEET-OBS-009 | not-started | Open PR → green CI (queue guard) → squash-merge → close `fleet-observability-1` | FLEET-OBS-008 | lead | — | trunk merge; no direct push to main |
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| id | status | description | depends_on | agent | pr | notes |
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| ------------- | ----------- | ------------------------------------------------------------------------------------------------------------------ | --------------------- | ----------- | --- | --------------------------------------------------------------------------------------------------------------------------- |
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| FLEET-OBS-000 | done | Plan: north-star + Phase-2 PRD + workstream scaffolding | — | lead | — | persisted 2026-06-20 on `feat/fleet-observability` |
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| FLEET-OBS-001 | done | Heartbeat protocol v1 spec finalized in PRD + framework doc | FLEET-OBS-000 | lead | — | file-based `~/.config/mosaic/fleet/run/<agent>.hb`; spec in PRD |
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| FLEET-OBS-002 | in-progress | Implement heartbeat responder in `dogfood-agent.py` | FLEET-OBS-001 | fleet-coder | — | dispatched to ad-hoc `mosaic yolo` fleet agent (dogfood) |
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| FLEET-OBS-003 | done | `mosaic fleet ps` — join systemd+tmux+proc+idle+heartbeat; tenant+host tagged; drift + boot-enable flags; `--json` | FLEET-OBS-001 | worker | — | commit ab47831; LIVE-verified on mosaic-fleet; caught canary-pi DRIFT + BOOT-ENABLE. Polish: idleSeconds parse returns null |
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| FLEET-OBS-004 | done | `mosaic agent watch <name>` — read-only join (no resize, no keystrokes) | FLEET-OBS-000 | worker | — | `attach -r`; verb wired |
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| FLEET-OBS-005 | done | `mosaic agent send --verify` — delivery/acceptance receipt | FLEET-OBS-000 | worker | — | --verify flag; draft-heuristic verify |
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| FLEET-OBS-006 | done | CLI specs for ps/watch/send-verify (tenant+host shape, command construction) | FLEET-OBS-003,004,005 | worker | — | 62 tests green (31 new); re-verified by lead |
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| FLEET-OBS-007 | not-started | Framework doc: fleet observability guide + verbs | FLEET-OBS-003,004,005 | lead | — | `docs/guides/` or `framework/tools/.../README` |
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| FLEET-OBS-008 | not-started | Independent review + dogfood verification on live fleet | FLEET-OBS-002..007 | reviewer | — | author ≠ reviewer; capture evidence in scratchpad |
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| FLEET-OBS-009 | not-started | Open PR → green CI (queue guard) → squash-merge → close `fleet-observability-1` | FLEET-OBS-008 | lead | — | trunk merge; no direct push to main |
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## Proposed MVP rollup row (for the MVP orchestrator — not written by this workstream)
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