Bernd Worsch 3cac021213 feat(WP-0010): IHF Phase 9 — External API Surface and Consumer SDKs ...

Delivers the full Phase 9 external API layer:

- Versioned REST API (/api/v2/) with OpenAPI 3.1 spec; enum arrays for
  widget_type, event_type, annotation category drawn live from registry tables
- OAuth 2.0 client credentials flow (/api/v2/token); hub:*:write scopes
  gated on active HubCapabilityManifest FK
- API key management: SHA256-hashed tokens, key_prefix for display,
  one-time reveal on creation, revocation support
- TypeScript and Python consumer SDKs generated from registry tables
  (/api/v2/sdk/ihf-client.ts, /api/v2/sdk/ihf-client.py)
- Webhook delivery: HMAC-SHA256 signing, append-only webhook_deliveries,
  fire-and-forget dispatch via forkIO, 3-retry logic
- Admin API dashboard with 24h stats (request count, error rate, last seen)
- Rate limiting (per-minute) and daily quota enforcement via api_request_log
- Schema migration: api_consumers, api_keys, webhook_subscriptions (CHECK
  constraint on 6 framework lifecycle topics), webhook_deliveries
  (append-only trigger), api_request_log
- ARCHITECTURE-LAYERS.md scorecard: 3.34 → 3.41 (approaching Strong)
- contracts/functional/interaction-reporting-v1.md extended with Phase 9
  endpoint catalogue and 422 validation error format

GAAF: no bare TEXT discriminators; webhook event_type uses CHECK constraint
over 6 allowed framework lifecycle topic strings (not widget event types).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-04-01 19:52:20 +00:00

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