feat(iios): projectors checkpoint the projection cursor (P9)

All 5 projectors (route/ai/inbox/calendar/raw-event) now advance their
IiosProjectionCursor after a freshly-claimed event is applied — split into
claim → apply → advance so a duplicate never double-counts and a throw leaves
the cursor untouched (event replays via the DLQ). Inbox's two topics get two
cursor rows. Proves KG-06 replay reproduction at the projection level.

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

packages/iios-service/src/ai/ai-routing.spec.ts

@@ -3,6 +3,7 @@ import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
 import { PrismaClient } from '@prisma/client';
 import { DlqService } from '../outbox/dlq.service';
 import { resetDb } from '../test-utils/reset-db';
+import { ProjectionCursorService } from '../projection/projection-cursor.service';
 import { makeFakePorts, makeFakeInference } from '@insignia/iios-testkit';
 import { IIOS_EVENTS, type CloudEvent } from '@insignia/iios-contracts';
 import { ActorResolver } from '../identity/actor.resolver';
@@ -105,7 +106,7 @@ describe('AI × routing (P7, KG-05: AI proposes, never approves)', () => {
 
   it('AiProjector auto-classifies a channel-bearing interaction, idempotently', async () => {
     const { interactionId, event } = await ingestInbound('There is a party at 9 PM tonight!');
-    const p = new AiProjector(asService, new OutboxBus(), new DlqService(asService), ai());
+    const p = new AiProjector(asService, new OutboxBus(), new DlqService(asService), ai(), new ProjectionCursorService(asService));
     await p.onNormalized(event);
     await p.onNormalized(event); // replay
     expect(await prisma.iiosAiJob.count({ where: { interactionId, jobType: 'CLASSIFY' } })).toBe(1);

packages/iios-service/src/ai/ai.projector.ts

@@ -3,6 +3,7 @@ import { CloudEvent, IIOS_EVENTS } from '@insignia/iios-contracts';
 import { PrismaService } from '../prisma/prisma.service';
 import { OutboxBus } from '../outbox/outbox.bus';
 import { DlqService } from '../outbox/dlq.service';
+import { ProjectionCursorService } from '../projection/projection-cursor.service';
 import { AiJobService } from './ai.service';
 
 /**
@@ -21,6 +22,7 @@ export class AiProjector implements OnModuleInit {
     private readonly bus: OutboxBus,
     private readonly dlq: DlqService,
     private readonly ai: AiJobService,
+    private readonly cursor: ProjectionCursorService,
   ) {}
 
   onModuleInit(): void {
@@ -29,7 +31,12 @@ export class AiProjector implements OnModuleInit {
   }
 
   async onNormalized(event: CloudEvent): Promise<void> {
-    if (!(await this.claim(event.id))) return;
+    if (!(await this.claim(event.id))) return; // duplicate → no apply, no cursor advance
+    await this.applyNormalized(event);
+    await this.cursor.advance(this.consumer, event);
+  }
+
+  private async applyNormalized(event: CloudEvent): Promise<void> {
     const { interactionId } = event.data as { interactionId: string };
     const interaction = await this.prisma.iiosInteraction.findUnique({
       where: { id: interactionId },