# Tasks: events-spec-tightening

## 1. Spec delta

- [ ] 1.1 Author `specs/events/spec.md` delta with `## MODIFIED Requirements` (Deterministic id and clock sources, Structured errors, Passive observability adapter) and `## ADDED Requirements` (emitAsync timeout, emitAsync abort, Envelope traceId propagation).
- [ ] 1.2 Add `**Verified by:**` line to every requirement (existing + new).

## 2. Conformance test

- [ ] 2.1 Add `packages/events/events/src/conformance.spec-conformance.test.ts` pinning:
  - `new EventBus({ clock, idGenerator })` accepts injections (replaces ghost `createBus`).
  - Async listener throw is captured into `EmitResult.errors` with `EVENTS.LISTENER.THREW`.
  - `withObservability` adapter `onEmitError` fires when dispatch rejects.
  - `emitAsync` with `timeoutMs` rejects with `EVENTS.EMIT.TIMED_OUT` past the deadline.
  - `emitAsync` with an aborted `AbortSignal` rejects with `EVENTS.EMIT.ABORTED` (`cause === signal.reason`).
  - `traceId` passed to `emit` / `emitAsync` surfaces on `EventEnvelope.traceId`.

## 3. Gate

- [ ] 3.1 `bunx turbo lint typecheck test --filter=@suaveplan/events` green.
- [ ] 3.2 `bunx turbo test:coverage --filter=@suaveplan/events` 100/100/100/100.
- [ ] 3.3 `bun scripts/openspec-conformance.ts @suaveplan/events` exits 0.

## 4. Fold + archive

- [ ] 4.1 Fold delta into `openspec/specs/events/spec.md`.
- [ ] 4.2 Move `openspec/changes/events-spec-tightening/` to `openspec/archive/2026-04-27-events-spec-tightening/`.