suaveplan/openspec/archive/2026-05-25-api-router-worker-bridge/tasks.md

Tasks — @suaveplan/api-router-worker-bridge

Every checkbox MUST reflect work actually done in this change.

0. Pre-flight (non-negotiable)

• 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)
• 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.
• 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

• 1.1 Read design doc §6 (per-request data flow) + §5.2a
• 1.2 Read umbrella
• 1.3 Read openspec/AGENTS.md Sections 13 and 14
• 1.4 Draft proposal.md
• 1.5 Draft specs/api-router-worker-bridge/spec.md
• 1.6 Every requirement carries **Verified by:**

2. Implementation

• 2.1 Scaffold packages/api/api-router-worker-bridge/ (0.1.0, deps: @suaveplan/api-worker-rpc, @suaveplan/api-types, @suaveplan/error, zod)
• 2.2 src/main-side/ — BridgeMain.dispatch(routeHit) → Promise<Response>
• 2.3 src/worker-side/ — BridgeWorker.serve(handler) accepts envelopes from main
• 2.4 src/envelope-schemas/ — Zod schemas for HttpDispatchEnvelope + HttpResponseEnvelope
• 2.5 src/streaming-marshal/ — Transferable stream marshalling both directions
• 2.6 src/header-allowlist/ — default deny list (authorization, cookie, set-cookie, x-csrf-token); per-route allowlist
• 2.7 src/error-codes.ts — every BRIDGE_* code
• 2.8 src/index.ts — namespace re-exports
• 2.9 Conformance: bridge MUST pass runRouterConformance (Stage 4 gate) under worker-proxy surface

3. Tests

• 3.1 src/main-side/main-side.test.ts — given route match + body, envelope sent + response rehydrated
• 3.2 src/worker-side/worker-side.test.ts — envelope decoded; handler invoked with reconstructed ctx; response envelope sent
• 3.3 src/envelope-schemas/envelope-schemas.test.ts — invalid envelope rejected (BRIDGE_ENVELOPE_INVALID)
• 3.4 src/streaming-marshal/streaming-marshal.test.ts — large request stream + large response stream both round-trip with back-pressure
• 3.5 src/header-allowlist/header-allowlist.spec-conformance.test.ts — expectTypeOf AND runtime assertions that Authorization / Cookie are NEVER in ctx.request.headers worker-side
• 3.6 tests/no-raw-request.test.ts — pin invariant: envelope never carries Request reference; raw Request is unreachable from worker
• 3.7 Every it(...) carries { timeout: 5000 }

4. Documentation

• 4.1 Sibling .md for every implementation .ts (≥200 words, basic + advanced examples)
• 4.2 README links every co-located .md; explicitly call out the no-raw-Request invariant
• 4.3 Update CLAUDE.md

5. Pre-archive verification (the 5-gate triple)

• 5.1 bun run check — Biome 0/0/0
• 5.2 bunx turbo lint typecheck test --filter=@suaveplan/api-router-worker-bridge — green
• 5.3 bunx turbo test:coverage --filter=@suaveplan/api-router-worker-bridge — 100/100/100/100
• 5.4 bun scripts/openspec-conformance.ts @suaveplan/api-router-worker-bridge — exit 0
• 5.5 bunx turbo build --filter=@suaveplan/api-router-worker-bridge — green
• 5.6 Conformance gate: runRouterConformance from @suaveplan/api-router/testing passes against the bridge as the surface — required before Stage 4 can complete

6. Pre-archive 7-row checklist

• 6.1 Generics threaded; expectTypeOf proves response type preserved across bridge
• 6.2 Zod schemas validate envelopes on both sides
• 6.3 Every BRIDGE_* code thrown from a production path
• 6.4 Strict-mode behaviors (header allowlist on/off configurable; strict default)
• 6.5 OTel — N/A (host's request span continues across bridge; bridge adds api.bridge.dispatch child span tested with InMemoryMetricExporter)
• 6.6 Lifecycle dedup — N/A
• 6.7 No retroactive tick

7. Archive

• 7.1 Fold spec delta into openspec/specs/api-router-worker-bridge/spec.md
• 7.2 Move to openspec/archive/<yyyy-mm-dd>-api-router-worker-bridge/
• 7.3 Tick Stage-3 row in umbrella
• 7.4 Refresh MANIFEST.md