# Tasks — `@suaveplan/api-sse`

> Every checkbox MUST reflect work actually done in this change.

## 0. Pre-flight (non-negotiable)

- [x] 0.1 Confirm clean working tree (`git status` reports nothing) and no in-flight worktrees with uncommitted work (`git worktree list` then `git status` in each)
- [x] 0.2 If any worktrees exist under `.claude/worktrees/`, account for each one: still-active agent, work-pending-merge, or stale-and-prune. Stale worktrees MUST be removed (`git worktree remove`) before opening a new one — code that has been lost twice on main is the failure mode this guards against.
- [x] 0.3 Confirm the package set in `MANIFEST.md` matches `find packages -maxdepth 3 -name package.json` count. Drift here means a prior change archived without regenerating the manifest.

## 1. Spec authoring

- [x] 1.1 Read design doc §11.5 (reconnect/replay), §11.6 (SSE), §11.7 (OTel), §11.8 (worker tier)
- [x] 1.2 Read `openspec/specs/api-sse/spec.md` (does not exist yet)
- [x] 1.3 Read `openspec/AGENTS.md` Sections 13, 14
- [x] 1.4 Draft `proposal.md`
- [x] 1.5 Source-mapping table
- [x] 1.6 Draft `specs/api-sse/spec.md`
- [x] 1.7 `**Verified by:**` line on every requirement

## 2. Implementation

- [x] 2.1 Scaffold `packages/api/api-sse/` (`"version": "0.1.0"`, `"sideEffects": false`, deps: `@suaveplan/api-types`, `@suaveplan/api-ws` (peer, type-only), `@suaveplan/error`, `@suaveplan/types`, `zod`)
- [x] 2.2 `src/connection/` — `SseConnection`
- [x] 2.3 `src/event/` — `SseEvent` type + Zod schema (`import z from "zod"`)
- [x] 2.4 `src/broker/` — `SseBroker`
- [x] 2.5 `src/replay-buffer/` — ring-buffer interface + size/time eviction; `since(lastEventId)`
- [x] 2.6 `src/connection-registry/` — multi-index registry typed for SSE
- [x] 2.7 `src/capability-id/` — augmentation adding `"sse"`
- [x] 2.8 `src/error-codes/` — `SSE_CODES`
- [x] 2.9 `src/testing/` — `runSseEngineConformance(factory)`
- [x] 2.10 `src/index.ts` — explicit named re-exports
- [x] 2.11 `package.json` `exports` per subpath

## 3. Tests

- [x] 3.1 Unit tests per feature
- [x] 3.2 Spec-conformance type tests
- [x] 3.3 Replay-buffer property tests (since(id) consistent across appends)
- [x] 3.4 Every `it(...)` carries `{ timeout: 5000 }`

## 4. Documentation

- [x] 4.1 Sibling `.md` for every implementation `.ts`
- [x] 4.2 `README.md` linking every `.md`
- [x] 4.3 No CLAUDE.md update

## 5. Pre-archive verification

- [x] 5.1 `bun run check` — 0/0/0
- [x] 5.2 `bunx turbo lint typecheck test --filter=@suaveplan/api-sse` — green
- [x] 5.3 `bunx turbo test:coverage --filter=@suaveplan/api-sse` — 100/100/100/100
- [x] 5.4 `bun scripts/openspec-conformance.ts @suaveplan/api-sse` — exit 0
- [x] 5.5 `bunx turbo build --filter=@suaveplan/api-sse` — green

## 6. Pre-archive 7-row checklist

- [x] 6.1 Generics on `ReplayBuffer<Payload>`; `expectTypeOf` on every literal claim
- [x] 6.2 Zod wired at the `SseEvent` boundary
- [x] 6.3 Every `SSE_CODES` entry thrown
- [x] 6.4 Buffer overflow / underrun behaviors tested both directions
- [x] 6.5 OTel — N/A (engines emit)
- [x] 6.6 Lifecycle dedup — connection register / replay idempotent; tested
- [x] 6.7 No retroactive tick

## 7. Archive

- [x] 7.1 Fold spec delta
- [x] 7.2 Move to `openspec/archive/<yyyy-mm-dd>-api-sse/`
- [x] 7.3 Tick umbrella `1.6`
- [x] 7.4 Refresh `MANIFEST.md`