0.57.0 · core 2026-08-04

release 0.57.0 on GitHub →

Host owns scheduling, Stelow slims responsibilities. The core no longer ships Pulse, the inbox mirror, or the provenance log — each host surface now drives its own deferred-item and scheduling story (Multica autopilot + backlog/todo, Fusion native scheduler, Pi pi-subagents). Includes the Multica stage-label hardening from CAL-38 (the "one stelow:* label at a time" invariant is now structural, not prompt-based).

Added

• Multica stage-label adapter (CAL-40 T4) — New extensions/stelow/adapters/multica/labels.ts with setStageLabel(issueId, newStage, prevStage, ctx) helper. STAGE_LABELS is derived from PHASE_NAMES (canonical 17-stage state machine in extensions/stelow/types.ts), so adding a stage in the engine automatically gets a label. stages-guard.ts#syncStagesGuardState() now invokes the helper after every successful transition when STELOW_MULTICA_HOST=1 and MULTICA_ISSUE_ID are set in the environment. Pre-transition drift (issues with two stelow:* labels) is corrected in-place by the helper.
• Multica label invariant test (CAL-40 T4) — tests/unit/multica-labels.test.ts (18 tests) asserts the structural invariant: an issue must have at most one stelow:* label at any time, even after a transition that follows a drift state. The assertSingleStageLabel helper exposes the invariant as a catchable check for the audit stage.
• Host Installation Guide (CAL-40 T5) — New top-level README.md section with one concrete path per host (Pi, Fusion, Multica, Generic). Documents that scheduling/automation is host-owned with the per-host scheduler recipe.

Changed

• WORKFLOW_COMMANDS slimmed (CAL-40 T3) — Host-agnostic registry went from 19 to 16 descriptors after sw-inbox and sw-pulse were removed. The last piOnly descriptor (sw-unlock) was moved to extensions/stelow/adapters/pi/commands.ts#PI_LOCAL_COMMANDS as a Pi-local registration. Pi now exposes 17 commands (16 agnostic + 1 Pi-local); Fusion emits all 16 agnostic descriptors.
• Stage transitions project onto Multica issue labels (CAL-40 T4) — stages-guard.ts#syncStagesGuardState() now performs the stelow:* label swap automatically under STELOW_MULTICA_HOST=1. Callers no longer need to remember to remove the previous label; the invariant is enforced by the helper. The projection is a best-effort side effect (failures are logged but don't roll back the stelow.json write).
• Architecture split documented (CAL-40 T6) — architecture.md gained a "Responsibility split (v0.57.0)" section under "Host adapters" that calls out Pulse, inbox, and runner scheduling as host responsibilities while Stelow owns workflow state, adapters, and the audit trail.

Removed

• Pulse — autonomous inbox processing (CAL-40 T1) — Deleted extensions/stelow/pulse/ (pulse.sh, pulse.ps1, pulse-system.md, pulse-task.md, SETUP.md). scripts/setup-pulse.sh and scripts/copy-pulse-assets.sh are now no-op stubs that point users at their host's native scheduler. tests/unit/pulse-assets.test.ts deleted. setup.sh lost the "Step 9/11: Pulse" step (renumbered to 9 steps). Migration: anyone running pulse.sh/pulse.ps1 from cron, systemd, launchd, or Task Scheduler must move to their host's native scheduling (Multica autopilot with run_only triggers, Fusion native scheduler, Pi pi-subagents).
• Inbox + Provenance filesystem mirror (CAL-40 T2) — Deleted extensions/stelow/inbox.ts and extensions/stelow/provenance.ts. Removed cmdInbox, cmdPulse, ensurePulseScripts, and their command registrations in commands.ts. Removed the readInbox fallback in start.ts. Removed the InboxItem type from extensions/stelow/modules/task.ts. Migration: hosts that wanted deferred items should use Multica's backlog/todo, Fusion's inbox, or Pi's pi-session-state. The audit-trail.ts module stays (it is the workflow's own output, not a host inbox mirror).