feat(service): P5.3 inbound adapter pipeline (ACK-fast webhook + RawEventProjector) + traceId

POST /v1/adapters/:type/webhook verifies HMAC (fail-closed) -> stores raw ->
emits raw.received -> 202. RawEventProjector consumes it off the relay, normalizes
via the adapter, reuses IngestService (traceId threaded raw->interaction).
Deduped on (channelType, externalEventId). rawBody enabled. 48 tests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/iios-service/package.json

@@ -13,6 +13,7 @@
   },
   "dependencies": {
     "@insignia/iios-contracts": "workspace:*",
+    "@insignia/iios-adapter-sdk": "workspace:*",
     "@nestjs/common": "^11.1.27",
     "@nestjs/core": "^11.1.27",
     "@nestjs/platform-express": "^11.1.27",