feat(service): P3.1 inbox tables + extract ActorResolver

IiosInboxItem + IiosInboxItemStateHistory (migration inbox-init). Extracted
resolveScope/resolveActor/ensureParticipant into a shared ActorResolver
(IdentityModule) so message + inbox layers share identity resolution; MessageService
delegates (P2 tests unchanged).

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

packages/iios-service/prisma/migrations/20260630210848_inbox_init/migration.sql

@@ -0,0 +1,62 @@
+-- CreateEnum
+CREATE TYPE "IiosInboxItemKind" AS ENUM ('NEEDS_REPLY', 'NEEDS_REVIEW', 'NEEDS_APPROVAL', 'SUPPORT_UPDATE', 'MEETING_FOLLOWUP', 'DIGEST', 'SYSTEM_ALERT', 'CRM_OWNER_INTEREST');
+
+-- CreateEnum
+CREATE TYPE "IiosInboxState" AS ENUM ('OPEN', 'SNOOZED', 'DONE', 'ARCHIVED', 'CANCELLED', 'STALE');
+
+-- CreateTable
+CREATE TABLE "IiosInboxItem" (
+    "id" TEXT NOT NULL,
+    "scopeId" TEXT NOT NULL,
+    "ownerActorId" TEXT NOT NULL,
+    "kind" "IiosInboxItemKind" NOT NULL,
+    "state" "IiosInboxState" NOT NULL DEFAULT 'OPEN',
+    "title" TEXT NOT NULL,
+    "summary" TEXT,
+    "priority" TEXT NOT NULL DEFAULT 'NORMAL',
+    "dueAt" TIMESTAMP(3),
+    "sourceInteractionId" TEXT,
+    "threadId" TEXT,
+    "traceId" TEXT,
+    "actionRef" JSONB,
+    "policyDecisionRef" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "metadata" JSONB,
+
+    CONSTRAINT "IiosInboxItem_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "IiosInboxItemStateHistory" (
+    "id" TEXT NOT NULL,
+    "inboxItemId" TEXT NOT NULL,
+    "fromState" "IiosInboxState",
+    "toState" "IiosInboxState" NOT NULL,
+    "actorId" TEXT,
+    "reasonCode" TEXT,
+    "at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "IiosInboxItemStateHistory_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "IiosInboxItem_ownerActorId_state_priority_idx" ON "IiosInboxItem"("ownerActorId", "state", "priority");
+
+-- CreateIndex
+CREATE INDEX "IiosInboxItemStateHistory_inboxItemId_idx" ON "IiosInboxItemStateHistory"("inboxItemId");
+
+-- AddForeignKey
+ALTER TABLE "IiosInboxItem" ADD CONSTRAINT "IiosInboxItem_scopeId_fkey" FOREIGN KEY ("scopeId") REFERENCES "IiosScope"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "IiosInboxItem" ADD CONSTRAINT "IiosInboxItem_ownerActorId_fkey" FOREIGN KEY ("ownerActorId") REFERENCES "IiosActorRef"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "IiosInboxItem" ADD CONSTRAINT "IiosInboxItem_sourceInteractionId_fkey" FOREIGN KEY ("sourceInteractionId") REFERENCES "IiosInteraction"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "IiosInboxItem" ADD CONSTRAINT "IiosInboxItem_threadId_fkey" FOREIGN KEY ("threadId") REFERENCES "IiosThread"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "IiosInboxItemStateHistory" ADD CONSTRAINT "IiosInboxItemStateHistory_inboxItemId_fkey" FOREIGN KEY ("inboxItemId") REFERENCES "IiosInboxItem"("id") ON DELETE CASCADE ON UPDATE CASCADE;

packages/iios-service/prisma/schema.prisma

@@ -75,6 +75,26 @@ enum IiosReceiptKind {
   RATE_LIMITED
 }
 
+enum IiosInboxItemKind {
+  NEEDS_REPLY
+  NEEDS_REVIEW
+  NEEDS_APPROVAL
+  SUPPORT_UPDATE
+  MEETING_FOLLOWUP
+  DIGEST
+  SYSTEM_ALERT
+  CRM_OWNER_INTEREST
+}
+
+enum IiosInboxState {
+  OPEN
+  SNOOZED
+  DONE
+  ARCHIVED
+  CANCELLED
+  STALE
+}
+
 // ─── Kernel tables ────────────────────────────────────────────────
 
 /// Frozen six-vector scope. orgId + appId are REQUIRED (no global-by-null).
@@ -93,6 +113,7 @@ model IiosScope {
   channels      IiosChannel[]
   threads       IiosThread[]
   interactions  IiosInteraction[]
+  inboxItems    IiosInboxItem[]
 
   @@index([orgId, appId, tenantId])
 }
@@ -135,6 +156,7 @@ model IiosActorRef {
   interactions       IiosInteraction[]
   receipts           IiosMessageReceipt[]
   unreadCounters     IiosUnreadCounter[]
+  inboxItemsOwned    IiosInboxItem[]
 }
 
 /// A configured channel surface (PORTAL in P1).
@@ -177,6 +199,7 @@ model IiosThread {
   participants   IiosThreadParticipant[]
   interactions   IiosInteraction[]
   unreadCounters IiosUnreadCounter[]
+  inboxItems     IiosInboxItem[]
 
   @@index([scopeId, status])
 }
@@ -219,8 +242,9 @@ model IiosInteraction {
   traceId             String?
   metadata            Json?
 
-  parts    IiosMessagePart[]
+  parts      IiosMessagePart[]
-  receipts IiosMessageReceipt[]
+  receipts   IiosMessageReceipt[]
+  inboxItems IiosInboxItem[]
 
   @@unique([scopeId, idempotencyKey])
   @@index([threadId, occurredAt])
@@ -299,3 +323,49 @@ model IiosUnreadCounter {
 
   @@id([threadId, actorId])
 }
+
+// ─── P3: Inbox (work/awareness surface) ───────────────────────────
+
+/// A durable action/awareness item owned by one actor. Fed by the event
+/// projector (deterministic, collapse-per-thread). NOT a thin unread projection.
+model IiosInboxItem {
+  id                  String            @id @default(cuid())
+  scopeId             String
+  scope               IiosScope         @relation(fields: [scopeId], references: [id], onDelete: Cascade)
+  ownerActorId        String
+  ownerActor          IiosActorRef      @relation(fields: [ownerActorId], references: [id])
+  kind                IiosInboxItemKind
+  state               IiosInboxState    @default(OPEN)
+  title               String
+  summary             String?
+  priority            String            @default("NORMAL")
+  dueAt               DateTime?
+  sourceInteractionId String?
+  sourceInteraction   IiosInteraction?  @relation(fields: [sourceInteractionId], references: [id])
+  threadId            String?
+  thread              IiosThread?       @relation(fields: [threadId], references: [id])
+  traceId             String?
+  actionRef           Json?
+  policyDecisionRef   String?
+  createdAt           DateTime          @default(now())
+  updatedAt           DateTime          @updatedAt
+  metadata            Json?
+
+  stateHistory IiosInboxItemStateHistory[]
+
+  @@index([ownerActorId, state, priority])
+}
+
+/// Audit trail of inbox-item state transitions.
+model IiosInboxItemStateHistory {
+  id          String          @id @default(cuid())
+  inboxItemId String
+  inboxItem   IiosInboxItem   @relation(fields: [inboxItemId], references: [id], onDelete: Cascade)
+  fromState   IiosInboxState?
+  toState     IiosInboxState
+  actorId     String?
+  reasonCode  String?
+  at          DateTime        @default(now())
+
+  @@index([inboxItemId])
+}

packages/iios-service/src/app.module.ts

@@ -1,6 +1,7 @@
 import { Module } from '@nestjs/common';
 import { PrismaModule } from './prisma/prisma.module';
 import { PlatformModule } from './platform/platform.module';
+import { IdentityModule } from './identity/identity.module';
 import { InteractionsModule } from './interactions/interactions.module';
 import { OutboxModule } from './outbox/outbox.module';
 import { ThreadsModule } from './threads/threads.module';
@@ -9,7 +10,7 @@ import { HealthController } from './health.controller';
 import { DevController } from './dev/dev.controller';
 
 @Module({
-  imports: [PrismaModule, PlatformModule, InteractionsModule, OutboxModule, ThreadsModule, MessageModule],
+  imports: [PrismaModule, PlatformModule, IdentityModule, InteractionsModule, OutboxModule, ThreadsModule, MessageModule],
   controllers: [HealthController, DevController],
 })
 export class AppModule {}

packages/iios-service/src/identity/actor.resolver.ts

@@ -0,0 +1,55 @@
+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../prisma/prisma.service';
+
+/** The authenticated principal derived from the session port (token). */
+export interface MessagePrincipal {
+  userId: string;
+  orgId: string;
+  appId: string;
+  tenantId?: string;
+  displayName?: string;
+}
+
+/**
+ * Resolves a principal to kernel rows (scope → source handle → actor) and
+ * manages thread participation. Shared by the message + inbox layers so neither
+ * re-implements identity resolution. Unknown handles stay UNVERIFIED (the MDM
+ * port resolution is applied at ingest; native users get a PORTAL_USER handle).
+ */
+@Injectable()
+export class ActorResolver {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async resolveScope(principal: MessagePrincipal) {
+    return (
+      (await this.prisma.iiosScope.findFirst({
+        where: { orgId: principal.orgId, appId: principal.appId, tenantId: principal.tenantId ?? null },
+      })) ??
+      (await this.prisma.iiosScope.create({
+        data: { orgId: principal.orgId, appId: principal.appId, tenantId: principal.tenantId },
+      }))
+    );
+  }
+
+  async resolveActor(scopeId: string, principal: MessagePrincipal) {
+    const handle = await this.prisma.iiosSourceHandle.upsert({
+      where: { scopeId_kind_externalId: { scopeId, kind: 'PORTAL_USER', externalId: principal.userId } },
+      create: { scopeId, kind: 'PORTAL_USER', externalId: principal.userId, displayName: principal.displayName },
+      update: { lastSeenAt: new Date(), displayName: principal.displayName },
+    });
+    return (
+      (await this.prisma.iiosActorRef.findFirst({ where: { sourceHandleId: handle.id } })) ??
+      (await this.prisma.iiosActorRef.create({
+        data: { kind: 'HUMAN', sourceHandleId: handle.id, displayName: principal.displayName },
+      }))
+    );
+  }
+
+  async ensureParticipant(threadId: string, actorId: string): Promise<void> {
+    await this.prisma.iiosThreadParticipant.upsert({
+      where: { threadId_actorId: { threadId, actorId } },
+      create: { threadId, actorId },
+      update: {},
+    });
+  }
+}

packages/iios-service/src/identity/identity.module.ts

@@ -0,0 +1,9 @@
+import { Global, Module } from '@nestjs/common';
+import { ActorResolver } from './actor.resolver';
+
+@Global()
+@Module({
+  providers: [ActorResolver],
+  exports: [ActorResolver],
+})
+export class IdentityModule {}

packages/iios-service/src/messaging/message.service.ts

@@ -5,15 +5,9 @@ import { CloudEvent, IIOS_EVENTS, IiosPlatformPorts } from '@insignia/iios-contr
 import { PrismaService } from '../prisma/prisma.service';
 import { PLATFORM_PORTS } from '../platform/platform-ports';
 import { decideOrThrow } from '../platform/fail-closed';
+import { ActorResolver, type MessagePrincipal } from '../identity/actor.resolver';
 
-/** The authenticated sender, derived from the session port (token). */
+export type { MessagePrincipal };
-export interface MessagePrincipal {
-  userId: string;
-  orgId: string;
-  appId: string;
-  tenantId?: string;
-  displayName?: string;
-}
 
 export interface MessageDto {
   id: string;
@@ -42,26 +36,27 @@ export class MessageService {
   constructor(
     private readonly prisma: PrismaService,
     @Inject(PLATFORM_PORTS) private readonly ports: IiosPlatformPorts,
+    private readonly actors: ActorResolver,
   ) {}
 
   /** Open an existing thread, or create one when no id is given. Joins as participant. */
   async openThread(threadId: string | null, principal: MessagePrincipal): Promise<OpenThreadResult> {
     if (!threadId) {
       await decideOrThrow(this.ports, { action: 'iios.thread.create', scope: principal });
-      const scope = await this.resolveScope(principal);
+      const scope = await this.actors.resolveScope(principal);
-      const actor = await this.resolveActor(scope.id, principal);
+      const actor = await this.actors.resolveActor(scope.id, principal);
       const thread = await this.prisma.iiosThread.create({
         data: { scopeId: scope.id, createdByActorId: actor.id },
       });
-      await this.ensureParticipant(thread.id, actor.id);
+      await this.actors.ensureParticipant(thread.id, actor.id);
       return { threadId: thread.id, status: thread.status, history: [] };
     }
 
     const thread = await this.prisma.iiosThread.findUnique({ where: { id: threadId } });
     if (!thread) throw new NotFoundException('thread not found');
     await decideOrThrow(this.ports, { action: 'iios.thread.read', threadId, scopeId: thread.scopeId });
-    const actor = await this.resolveActor(thread.scopeId, principal);
+    const actor = await this.actors.resolveActor(thread.scopeId, principal);
-    await this.ensureParticipant(threadId, actor.id);
+    await this.actors.ensureParticipant(threadId, actor.id);
     return { threadId, status: thread.status, history: await this.history(threadId) };
   }
 
@@ -77,8 +72,8 @@ export class MessageService {
 
     await decideOrThrow(this.ports, { action: 'iios.message.send', threadId, scopeId: thread.scopeId });
 
-    const actor = await this.resolveActor(thread.scopeId, principal);
+    const actor = await this.actors.resolveActor(thread.scopeId, principal);
-    await this.ensureParticipant(threadId, actor.id);
+    await this.actors.ensureParticipant(threadId, actor.id);
 
     // Idempotency: a repeat key returns the existing message (no re-increment).
     const existing = await this.prisma.iiosInteraction.findUnique({
@@ -168,7 +163,7 @@ export class MessageService {
   ): Promise<{ interactionId: string; actorId: string }> {
     const thread = await this.prisma.iiosThread.findUnique({ where: { id: threadId } });
     if (!thread) throw new NotFoundException('thread not found');
-    const actor = await this.resolveActor(thread.scopeId, principal);
+    const actor = await this.actors.resolveActor(thread.scopeId, principal);
 
     await this.prisma.iiosMessageReceipt.upsert({
       where: { interactionId_actorId_receiptKind: { interactionId, actorId: actor.id, receiptKind: 'READ' } },
@@ -190,7 +185,7 @@ export class MessageService {
   ): Promise<{ interactionId: string; actorId: string }> {
     const thread = await this.prisma.iiosThread.findUnique({ where: { id: threadId } });
     if (!thread) throw new NotFoundException('thread not found');
-    const actor = await this.resolveActor(thread.scopeId, principal);
+    const actor = await this.actors.resolveActor(thread.scopeId, principal);
     await this.prisma.iiosMessageReceipt.upsert({
       where: { interactionId_actorId_receiptKind: { interactionId, actorId: actor.id, receiptKind: 'DELIVERED' } },
       create: { interactionId, actorId: actor.id, receiptKind: 'DELIVERED' },
@@ -219,39 +214,6 @@ export class MessageService {
 
   // ─── helpers ────────────────────────────────────────────────────
 
-  private async resolveScope(principal: MessagePrincipal) {
-    return (
-      (await this.prisma.iiosScope.findFirst({
-        where: { orgId: principal.orgId, appId: principal.appId, tenantId: principal.tenantId ?? null },
-      })) ??
-      (await this.prisma.iiosScope.create({
-        data: { orgId: principal.orgId, appId: principal.appId, tenantId: principal.tenantId },
-      }))
-    );
-  }
-
-  private async resolveActor(scopeId: string, principal: MessagePrincipal) {
-    const handle = await this.prisma.iiosSourceHandle.upsert({
-      where: { scopeId_kind_externalId: { scopeId, kind: 'PORTAL_USER', externalId: principal.userId } },
-      create: { scopeId, kind: 'PORTAL_USER', externalId: principal.userId, displayName: principal.displayName },
-      update: { lastSeenAt: new Date(), displayName: principal.displayName },
-    });
-    return (
-      (await this.prisma.iiosActorRef.findFirst({ where: { sourceHandleId: handle.id } })) ??
-      (await this.prisma.iiosActorRef.create({
-        data: { kind: 'HUMAN', sourceHandleId: handle.id, displayName: principal.displayName },
-      }))
-    );
-  }
-
-  private async ensureParticipant(threadId: string, actorId: string): Promise<void> {
-    await this.prisma.iiosThreadParticipant.upsert({
-      where: { threadId_actorId: { threadId, actorId } },
-      create: { threadId, actorId },
-      update: {},
-    });
-  }
-
   private toDto(
     interaction: { id: string; actorId: string | null; traceId: string | null; occurredAt: Date; parts: Array<{ kind: string; bodyText: string | null; contentRef: string | null }> },
     threadId: string,

packages/iios-service/src/messaging/message.spec.ts

@@ -2,12 +2,13 @@ import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
 import { PrismaClient } from '@prisma/client';
 import { makeFakePorts } from '@insignia/iios-testkit';
 import { MessageService, type MessagePrincipal } from './message.service';
+import { ActorResolver } from '../identity/actor.resolver';
 import type { PrismaService } from '../prisma/prisma.service';
 
 const url = process.env.DATABASE_URL ?? 'postgresql://iios:iios@localhost:5434/iios?schema=public';
 const prisma = new PrismaClient({ datasources: { db: { url } } });
 const asService = prisma as unknown as PrismaService;
-const svc = () => new MessageService(asService, makeFakePorts());
+const svc = () => new MessageService(asService, makeFakePorts(), new ActorResolver(asService));
 
 const alice: MessagePrincipal = { userId: 'alice', orgId: 'org_demo', appId: 'portal-demo', displayName: 'Alice' };
 const bob: MessagePrincipal = { userId: 'bob', orgId: 'org_demo', appId: 'portal-demo', displayName: 'Bob' };