feat(testkit): deterministic fake platform ports + fixtures + replay oracle

Fakes for all 7 IiosPlatformPorts (deny/timeout/ambiguous controls), portal +
unknown-email fixtures, replayTwice idempotency oracle. Adds ingest request
contract. Vitest alias resolves workspace packages to source.

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

packages/iios-contracts/src/index.ts

@@ -1,5 +1,6 @@
 export * from './scope';
 export * from './enums';
+export * from './ingest';
 export * from './ports';
 export * from './events';
 export * from './commands';