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openspec/archive/2026-04-19-enterprise-webhook-client/tasks.md

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+# Tasks: enterprise-webhook-client
+
+## 1. Scaffold
+
+- [x] 1.1 `universal/messaging/webhook-client/`; 100/100/100/100; guard tests; CLAUDE/README/FOLDERS.
+
+## 2. Errors + schemas
+
+- [x] 2.1 `src/errors/error-codes.ts` — codes + register; `WebhookErrorCode`.
+- [x] 2.2 Zod schemas per type.
+
+## 3. Verifier
+
+- [x] 3.1 `src/verifier/verifier.ts` — `WebhookVerifier` (HMAC-SHA256 + JWS); timing-safe compare via `@suaveplan/crypto`.
+
+## 4. Parser
+
+- [x] 4.1 `src/parser/parser.ts` — `WebhookParser` (JSON + form-encoded); schema validation with Zod-provided `WebhookSchema`.
+
+## 5. Receiver
+
+- [x] 5.1 `src/receiver/receiver.ts` — `WebhookReceiver` (request ingestion + listener dispatch + replay protection).
+
+## 6. Hooks
+
+- [x] 6.1 `src/hooks.ts` — `onWebhookDelivering`, `webhookHooks`.
+
+## 7. Docs / barrel / subpath exports / README
+
+## 8. Benchmarks
+
+- [x] 8.1 `verify.bench.ts`, `receive.bench.ts`.
+
+## 9. Ship gate
+
+- [x] 9.1 Verification sequence; fold + archive.