chore(tasks): MS23-P0-004 done, P0-005 in-progress

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/orchestrator/Dockerfile

@@ -21,6 +21,7 @@ FROM base AS deps
 COPY packages/shared/package.json ./packages/shared/
 COPY packages/config/package.json ./packages/config/
 COPY apps/orchestrator/package.json ./apps/orchestrator/
+# API schema is available via apps/orchestrator/prisma/schema.prisma symlink
 
 # Copy npm configuration for native binary architecture hints
 COPY .npmrc ./
@@ -46,6 +47,15 @@ COPY --from=deps /app/packages/shared/node_modules ./packages/shared/node_module
 COPY --from=deps /app/packages/config/node_modules ./packages/config/node_modules
 COPY --from=deps /app/apps/orchestrator/node_modules ./apps/orchestrator/node_modules
 
+# The repo has apps/orchestrator/prisma/schema.prisma as a symlink for CI use.
+# Kaniko resolves destination symlinks on COPY, which fails because the symlink
+# target (../../api/prisma/schema.prisma) doesn't exist in the container.
+# Fix: remove the dangling symlink first, then copy the real schema file there.
+RUN rm -f apps/orchestrator/prisma/schema.prisma
+COPY apps/api/prisma/schema.prisma ./apps/orchestrator/prisma/schema.prisma
+# pnpm turbo build runs prisma:generate (--schema=./prisma/schema.prisma) from the
+# orchestrator package context — no cross-package project-root issues.
+
 # Build the orchestrator app using TurboRepo
 RUN pnpm turbo build --filter=@mosaic/orchestrator
 

apps/orchestrator/package.json

@@ -3,19 +3,20 @@
   "version": "0.0.20",
   "private": true,
   "scripts": {
-    "dev": "nest start --watch",
     "build": "nest build",
+    "dev": "nest start --watch",
+    "lint": "eslint src/",
+    "lint:fix": "eslint src/ --fix",
+    "prisma:generate": "prisma generate --schema=./prisma/schema.prisma",
     "start": "node dist/main.js",
-    "start:dev": "nest start --watch",
     "start:debug": "nest start --debug --watch",
+    "start:dev": "nest start --watch",
     "start:prod": "node dist/main.js",
     "test": "vitest",
-    "test:watch": "vitest watch",
     "test:e2e": "vitest run --config tests/integration/vitest.config.ts",
     "test:perf": "vitest run --config tests/performance/vitest.config.ts",
-    "typecheck": "tsc --noEmit",
-    "lint": "eslint src/",
-    "lint:fix": "eslint src/ --fix"
+    "test:watch": "vitest watch",
+    "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.72.1",
@@ -46,6 +47,7 @@
     "@types/express": "^5.0.1",
     "@types/node": "^22.13.4",
     "@vitest/coverage-v8": "^4.0.18",
+    "prisma": "^6.19.2",
     "ts-node": "^10.9.2",
     "tsconfig-paths": "^4.2.0",
     "typescript": "^5.8.2",

apps/orchestrator/prisma/schema.prisma

@@ -0,0 +1 @@
+../../api/prisma/schema.prisma

apps/orchestrator/src/api/agents/agent-control.service.ts

@@ -0,0 +1,68 @@
+import { Injectable } from "@nestjs/common";
+import type { Prisma } from "@prisma/client";
+import { PrismaService } from "../../prisma/prisma.service";
+
+@Injectable()
+export class AgentControlService {
+  constructor(private readonly prisma: PrismaService) {}
+
+  private toJsonValue(value: Record<string, unknown>): Prisma.InputJsonValue {
+    return value as Prisma.InputJsonValue;
+  }
+
+  private async createOperatorAuditLog(
+    agentId: string,
+    operatorId: string,
+    action: "inject" | "pause" | "resume",
+    payload: Record<string, unknown>
+  ): Promise<void> {
+    await this.prisma.operatorAuditLog.create({
+      data: {
+        sessionId: agentId,
+        userId: operatorId,
+        provider: "internal",
+        action,
+        metadata: this.toJsonValue({ payload }),
+      },
+    });
+  }
+
+  async injectMessage(agentId: string, operatorId: string, message: string): Promise<void> {
+    const treeEntry = await this.prisma.agentSessionTree.findUnique({
+      where: { sessionId: agentId },
+      select: { id: true },
+    });
+
+    if (treeEntry) {
+      await this.prisma.agentConversationMessage.create({
+        data: {
+          sessionId: agentId,
+          role: "operator",
+          content: message,
+          provider: "internal",
+          metadata: this.toJsonValue({}),
+        },
+      });
+    }
+
+    await this.createOperatorAuditLog(agentId, operatorId, "inject", { message });
+  }
+
+  async pauseAgent(agentId: string, operatorId: string): Promise<void> {
+    await this.prisma.agentSessionTree.updateMany({
+      where: { sessionId: agentId },
+      data: { status: "paused" },
+    });
+
+    await this.createOperatorAuditLog(agentId, operatorId, "pause", {});
+  }
+
+  async resumeAgent(agentId: string, operatorId: string): Promise<void> {
+    await this.prisma.agentSessionTree.updateMany({
+      where: { sessionId: agentId },
+      data: { status: "running" },
+    });
+
+    await this.createOperatorAuditLog(agentId, operatorId, "resume", {});
+  }
+}

apps/orchestrator/src/api/agents/agent-messages.service.ts

@@ -0,0 +1,84 @@
+import { Injectable } from "@nestjs/common";
+import { type AgentConversationMessage, type Prisma } from "@prisma/client";
+import { PrismaService } from "../../prisma/prisma.service";
+
+@Injectable()
+export class AgentMessagesService {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async getMessages(
+    sessionId: string,
+    limit: number,
+    skip: number
+  ): Promise<{
+    messages: AgentConversationMessage[];
+    total: number;
+  }> {
+    const where = { sessionId };
+
+    const [messages, total] = await Promise.all([
+      this.prisma.agentConversationMessage.findMany({
+        where,
+        orderBy: {
+          timestamp: "desc",
+        },
+        take: limit,
+        skip,
+      }),
+      this.prisma.agentConversationMessage.count({ where }),
+    ]);
+
+    return {
+      messages,
+      total,
+    };
+  }
+
+  async getReplayMessages(sessionId: string, limit = 50): Promise<AgentConversationMessage[]> {
+    const messages = await this.prisma.agentConversationMessage.findMany({
+      where: { sessionId },
+      orderBy: {
+        timestamp: "desc",
+      },
+      take: limit,
+    });
+
+    return messages.reverse();
+  }
+
+  async getMessagesAfter(
+    sessionId: string,
+    lastSeenTimestamp: Date,
+    lastSeenMessageId: string | null
+  ): Promise<AgentConversationMessage[]> {
+    const where: Prisma.AgentConversationMessageWhereInput = {
+      sessionId,
+      ...(lastSeenMessageId
+        ? {
+            OR: [
+              {
+                timestamp: {
+                  gt: lastSeenTimestamp,
+                },
+              },
+              {
+                timestamp: lastSeenTimestamp,
+                id: {
+                  gt: lastSeenMessageId,
+                },
+              },
+            ],
+          }
+        : {
+            timestamp: {
+              gt: lastSeenTimestamp,
+            },
+          }),
+    };
+
+    return this.prisma.agentConversationMessage.findMany({
+      where,
+      orderBy: [{ timestamp: "asc" }, { id: "asc" }],
+    });
+  }
+}

apps/orchestrator/src/api/agents/agents-killswitch.controller.spec.ts

@@ -5,6 +5,8 @@ import { AgentSpawnerService } from "../../spawner/agent-spawner.service";
 import { AgentLifecycleService } from "../../spawner/agent-lifecycle.service";
 import { KillswitchService } from "../../killswitch/killswitch.service";
 import { AgentEventsService } from "./agent-events.service";
+import { AgentMessagesService } from "./agent-messages.service";
+import { AgentControlService } from "./agent-control.service";
 import type { KillAllResult } from "../../killswitch/killswitch.service";
 
 describe("AgentsController - Killswitch Endpoints", () => {
@@ -27,6 +29,17 @@ describe("AgentsController - Killswitch Endpoints", () => {
     subscribe: ReturnType<typeof vi.fn>;
     getInitialSnapshot: ReturnType<typeof vi.fn>;
     createHeartbeat: ReturnType<typeof vi.fn>;
+    getRecentEvents: ReturnType<typeof vi.fn>;
+  };
+  let mockMessagesService: {
+    getMessages: ReturnType<typeof vi.fn>;
+    getReplayMessages: ReturnType<typeof vi.fn>;
+    getMessagesAfter: ReturnType<typeof vi.fn>;
+  };
+  let mockControlService: {
+    injectMessage: ReturnType<typeof vi.fn>;
+    pauseAgent: ReturnType<typeof vi.fn>;
+    resumeAgent: ReturnType<typeof vi.fn>;
   };
 
   beforeEach(() => {
@@ -61,6 +74,19 @@ describe("AgentsController - Killswitch Endpoints", () => {
         timestamp: new Date().toISOString(),
         data: { heartbeat: true },
       }),
+      getRecentEvents: vi.fn().mockReturnValue([]),
+    };
+
+    mockMessagesService = {
+      getMessages: vi.fn(),
+      getReplayMessages: vi.fn().mockResolvedValue([]),
+      getMessagesAfter: vi.fn().mockResolvedValue([]),
+    };
+
+    mockControlService = {
+      injectMessage: vi.fn().mockResolvedValue(undefined),
+      pauseAgent: vi.fn().mockResolvedValue(undefined),
+      resumeAgent: vi.fn().mockResolvedValue(undefined),
     };
 
     controller = new AgentsController(
@@ -68,7 +94,9 @@ describe("AgentsController - Killswitch Endpoints", () => {
       mockSpawnerService as unknown as AgentSpawnerService,
       mockLifecycleService as unknown as AgentLifecycleService,
       mockKillswitchService as unknown as KillswitchService,
-      mockEventsService as unknown as AgentEventsService
+      mockEventsService as unknown as AgentEventsService,
+      mockMessagesService as unknown as AgentMessagesService,
+      mockControlService as unknown as AgentControlService
     );
   });
 

apps/orchestrator/src/api/agents/agents.controller.spec.ts

@@ -4,6 +4,8 @@ import { AgentSpawnerService } from "../../spawner/agent-spawner.service";
 import { AgentLifecycleService } from "../../spawner/agent-lifecycle.service";
 import { KillswitchService } from "../../killswitch/killswitch.service";
 import { AgentEventsService } from "./agent-events.service";
+import { AgentMessagesService } from "./agent-messages.service";
+import { AgentControlService } from "./agent-control.service";
 import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
 
 describe("AgentsController", () => {
@@ -30,6 +32,16 @@ describe("AgentsController", () => {
     createHeartbeat: ReturnType<typeof vi.fn>;
     getRecentEvents: ReturnType<typeof vi.fn>;
   };
+  let messagesService: {
+    getMessages: ReturnType<typeof vi.fn>;
+    getReplayMessages: ReturnType<typeof vi.fn>;
+    getMessagesAfter: ReturnType<typeof vi.fn>;
+  };
+  let controlService: {
+    injectMessage: ReturnType<typeof vi.fn>;
+    pauseAgent: ReturnType<typeof vi.fn>;
+    resumeAgent: ReturnType<typeof vi.fn>;
+  };
 
   beforeEach(() => {
     // Create mock services
@@ -69,13 +81,27 @@ describe("AgentsController", () => {
       getRecentEvents: vi.fn().mockReturnValue([]),
     };
 
+    messagesService = {
+      getMessages: vi.fn(),
+      getReplayMessages: vi.fn().mockResolvedValue([]),
+      getMessagesAfter: vi.fn().mockResolvedValue([]),
+    };
+
+    controlService = {
+      injectMessage: vi.fn().mockResolvedValue(undefined),
+      pauseAgent: vi.fn().mockResolvedValue(undefined),
+      resumeAgent: vi.fn().mockResolvedValue(undefined),
+    };
+
     // Create controller with mocked services
     controller = new AgentsController(
       queueService as unknown as QueueService,
       spawnerService as unknown as AgentSpawnerService,
       lifecycleService as unknown as AgentLifecycleService,
       killswitchService as unknown as KillswitchService,
-      eventsService as unknown as AgentEventsService
+      eventsService as unknown as AgentEventsService,
+      messagesService as unknown as AgentMessagesService,
+      controlService as unknown as AgentControlService
     );
   });
 
@@ -365,6 +391,93 @@ describe("AgentsController", () => {
     });
   });
 
+  describe("agent control endpoints", () => {
+    const agentId = "0b64079f-4487-42b9-92eb-cf8ea0042a64";
+
+    it("should inject an operator message", async () => {
+      const req = { apiKey: "control-key" };
+
+      const result = await controller.injectAgentMessage(
+        agentId,
+        { message: "pause and summarize" },
+        req
+      );
+
+      expect(controlService.injectMessage).toHaveBeenCalledWith(
+        agentId,
+        "control-key",
+        "pause and summarize"
+      );
+      expect(result).toEqual({ message: `Message injected into agent ${agentId}` });
+    });
+
+    it("should default operator id when request api key is missing", async () => {
+      await controller.injectAgentMessage(agentId, { message: "continue" }, {});
+
+      expect(controlService.injectMessage).toHaveBeenCalledWith(agentId, "operator", "continue");
+    });
+
+    it("should pause an agent", async () => {
+      const result = await controller.pauseAgent(agentId, {}, { apiKey: "ops-user" });
+
+      expect(controlService.pauseAgent).toHaveBeenCalledWith(agentId, "ops-user");
+      expect(result).toEqual({ message: `Agent ${agentId} paused` });
+    });
+
+    it("should resume an agent", async () => {
+      const result = await controller.resumeAgent(agentId, {}, { apiKey: "ops-user" });
+
+      expect(controlService.resumeAgent).toHaveBeenCalledWith(agentId, "ops-user");
+      expect(result).toEqual({ message: `Agent ${agentId} resumed` });
+    });
+  });
+
+  describe("getAgentMessages", () => {
+    it("should return paginated message history", async () => {
+      const agentId = "0b64079f-4487-42b9-92eb-cf8ea0042a64";
+      const query = {
+        limit: 25,
+        skip: 10,
+      };
+
+      const response = {
+        messages: [
+          {
+            id: "msg-1",
+            sessionId: agentId,
+            role: "agent",
+            content: "hello",
+            provider: "internal",
+            timestamp: new Date("2026-03-07T03:00:00.000Z"),
+            metadata: {},
+          },
+        ],
+        total: 101,
+      };
+
+      messagesService.getMessages.mockResolvedValue(response);
+
+      const result = await controller.getAgentMessages(agentId, query);
+
+      expect(messagesService.getMessages).toHaveBeenCalledWith(agentId, 25, 10);
+      expect(result).toEqual(response);
+    });
+
+    it("should use default pagination values", async () => {
+      const agentId = "0b64079f-4487-42b9-92eb-cf8ea0042a64";
+      const query = {
+        limit: 50,
+        skip: 0,
+      };
+
+      messagesService.getMessages.mockResolvedValue({ messages: [], total: 0 });
+
+      await controller.getAgentMessages(agentId, query);
+
+      expect(messagesService.getMessages).toHaveBeenCalledWith(agentId, 50, 0);
+    });
+  });
+
   describe("getRecentEvents", () => {
     it("should return recent events with default limit", () => {
       eventsService.getRecentEvents.mockReturnValue([

apps/orchestrator/src/api/agents/agents.controller.ts

@@ -14,7 +14,9 @@ import {
   Sse,
   MessageEvent,
   Query,
+  Request,
 } from "@nestjs/common";
+import type { AgentConversationMessage } from "@prisma/client";
 import { Throttle } from "@nestjs/throttler";
 import { Observable } from "rxjs";
 import { QueueService } from "../../queue/queue.service";
@@ -25,6 +27,11 @@ import { SpawnAgentDto, SpawnAgentResponseDto } from "./dto/spawn-agent.dto";
 import { OrchestratorApiKeyGuard } from "../../common/guards/api-key.guard";
 import { OrchestratorThrottlerGuard } from "../../common/guards/throttler.guard";
 import { AgentEventsService } from "./agent-events.service";
+import { GetMessagesQueryDto } from "./dto/get-messages-query.dto";
+import { AgentMessagesService } from "./agent-messages.service";
+import { AgentControlService } from "./agent-control.service";
+import { InjectAgentDto } from "./dto/inject-agent.dto";
+import { PauseAgentDto, ResumeAgentDto } from "./dto/control-agent.dto";
 
 /**
  * Controller for agent management endpoints
@@ -47,7 +54,9 @@ export class AgentsController {
     private readonly spawnerService: AgentSpawnerService,
     private readonly lifecycleService: AgentLifecycleService,
     private readonly killswitchService: KillswitchService,
-    private readonly eventsService: AgentEventsService
+    private readonly eventsService: AgentEventsService,
+    private readonly messagesService: AgentMessagesService,
+    private readonly agentControlService: AgentControlService
   ) {}
 
   /**
@@ -185,6 +194,107 @@ export class AgentsController {
     }
   }
 
+  /**
+   * Get paginated message history for an agent.
+   */
+  @Get(":agentId/messages")
+  @Throttle({ status: { limit: 200, ttl: 60000 } })
+  @UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
+  async getAgentMessages(
+    @Param("agentId", ParseUUIDPipe) agentId: string,
+    @Query() query: GetMessagesQueryDto
+  ): Promise<{
+    messages: AgentConversationMessage[];
+    total: number;
+  }> {
+    return this.messagesService.getMessages(agentId, query.limit, query.skip);
+  }
+
+  /**
+   * Stream per-agent conversation messages as server-sent events (SSE).
+   */
+  @Sse(":agentId/messages/stream")
+  @Throttle({ status: { limit: 200, ttl: 60000 } })
+  streamAgentMessages(@Param("agentId", ParseUUIDPipe) agentId: string): Observable<MessageEvent> {
+    return new Observable<MessageEvent>((subscriber) => {
+      let isClosed = false;
+      let lastSeenTimestamp = new Date();
+      let lastSeenMessageId: string | null = null;
+
+      const emitMessage = (message: AgentConversationMessage): void => {
+        if (isClosed) {
+          return;
+        }
+
+        subscriber.next({
+          data: this.toMessageStreamPayload(message),
+        });
+
+        lastSeenTimestamp = message.timestamp;
+        lastSeenMessageId = message.id;
+      };
+
+      void this.messagesService
+        .getReplayMessages(agentId, 50)
+        .then((messages) => {
+          if (isClosed) {
+            return;
+          }
+
+          messages.forEach((message) => {
+            emitMessage(message);
+          });
+
+          if (messages.length === 0) {
+            lastSeenTimestamp = new Date();
+            lastSeenMessageId = null;
+          }
+        })
+        .catch((error: unknown) => {
+          this.logger.error(
+            `Failed to load replay messages for ${agentId}: ${error instanceof Error ? error.message : String(error)}`
+          );
+          lastSeenTimestamp = new Date();
+          lastSeenMessageId = null;
+        });
+
+      const pollInterval = setInterval(() => {
+        if (isClosed) {
+          return;
+        }
+
+        void this.messagesService
+          .getMessagesAfter(agentId, lastSeenTimestamp, lastSeenMessageId)
+          .then((messages) => {
+            if (isClosed || messages.length === 0) {
+              return;
+            }
+
+            messages.forEach((message) => {
+              emitMessage(message);
+            });
+          })
+          .catch((error: unknown) => {
+            this.logger.error(
+              `Failed to poll messages for ${agentId}: ${error instanceof Error ? error.message : String(error)}`
+            );
+          });
+      }, 1000);
+
+      const heartbeat = setInterval(() => {
+        if (!isClosed) {
+          subscriber.next({ data: { type: "heartbeat" } });
+        }
+      }, 15000);
+
+      return () => {
+        isClosed = true;
+        clearInterval(pollInterval);
+        clearInterval(heartbeat);
+      };
+    });
+  }
+
   /**
    * Get agent status
    * @param agentId Agent ID to query
@@ -269,6 +379,57 @@ export class AgentsController {
     }
   }
 
+  @Post(":agentId/inject")
+  @Throttle({ default: { limit: 10, ttl: 60000 } })
+  @HttpCode(200)
+  @UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
+  async injectAgentMessage(
+    @Param("agentId", ParseUUIDPipe) agentId: string,
+    @Body() dto: InjectAgentDto,
+    @Request() req: { apiKey?: string }
+  ): Promise<{ message: string }> {
+    const operatorId = req.apiKey ?? "operator";
+    await this.agentControlService.injectMessage(agentId, operatorId, dto.message);
+
+    return {
+      message: `Message injected into agent ${agentId}`,
+    };
+  }
+
+  @Post(":agentId/pause")
+  @Throttle({ default: { limit: 10, ttl: 60000 } })
+  @HttpCode(200)
+  @UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
+  async pauseAgent(
+    @Param("agentId", ParseUUIDPipe) agentId: string,
+    @Body() _dto: PauseAgentDto,
+    @Request() req: { apiKey?: string }
+  ): Promise<{ message: string }> {
+    const operatorId = req.apiKey ?? "operator";
+    await this.agentControlService.pauseAgent(agentId, operatorId);
+
+    return {
+      message: `Agent ${agentId} paused`,
+    };
+  }
+
+  @Post(":agentId/resume")
+  @Throttle({ default: { limit: 10, ttl: 60000 } })
+  @HttpCode(200)
+  @UsePipes(new ValidationPipe({ transform: true, whitelist: true }))
+  async resumeAgent(
+    @Param("agentId", ParseUUIDPipe) agentId: string,
+    @Body() _dto: ResumeAgentDto,
+    @Request() req: { apiKey?: string }
+  ): Promise<{ message: string }> {
+    const operatorId = req.apiKey ?? "operator";
+    await this.agentControlService.resumeAgent(agentId, operatorId);
+
+    return {
+      message: `Agent ${agentId} resumed`,
+    };
+  }
+
   /**
    * Kill all active agents
    * @returns Summary of kill operation
@@ -301,4 +462,24 @@ export class AgentsController {
       throw error;
     }
   }
+
+  private toMessageStreamPayload(message: AgentConversationMessage): {
+    messageId: string;
+    sessionId: string;
+    role: string;
+    content: string;
+    provider: string;
+    timestamp: string;
+    metadata: unknown;
+  } {
+    return {
+      messageId: message.id,
+      sessionId: message.sessionId,
+      role: message.role,
+      content: message.content,
+      provider: message.provider,
+      timestamp: message.timestamp.toISOString(),
+      metadata: message.metadata,
+    };
+  }
 }

apps/orchestrator/src/api/agents/agents.module.ts

@@ -6,10 +6,18 @@ import { KillswitchModule } from "../../killswitch/killswitch.module";
 import { ValkeyModule } from "../../valkey/valkey.module";
 import { OrchestratorApiKeyGuard } from "../../common/guards/api-key.guard";
 import { AgentEventsService } from "./agent-events.service";
+import { PrismaModule } from "../../prisma/prisma.module";
+import { AgentMessagesService } from "./agent-messages.service";
+import { AgentControlService } from "./agent-control.service";
 
 @Module({
-  imports: [QueueModule, SpawnerModule, KillswitchModule, ValkeyModule],
+  imports: [QueueModule, SpawnerModule, KillswitchModule, ValkeyModule, PrismaModule],
   controllers: [AgentsController],
-  providers: [OrchestratorApiKeyGuard, AgentEventsService],
+  providers: [
+    OrchestratorApiKeyGuard,
+    AgentEventsService,
+    AgentMessagesService,
+    AgentControlService,
+  ],
 })
 export class AgentsModule {}

apps/orchestrator/src/api/agents/dto/control-agent.dto.ts

@@ -0,0 +1,3 @@
+export class PauseAgentDto {}
+
+export class ResumeAgentDto {}

apps/orchestrator/src/api/agents/dto/get-messages-query.dto.spec.ts

@@ -0,0 +1,37 @@
+import { plainToInstance } from "class-transformer";
+import { validate } from "class-validator";
+import { describe, expect, it } from "vitest";
+import { GetMessagesQueryDto } from "./get-messages-query.dto";
+
+describe("GetMessagesQueryDto", () => {
+  it("should use defaults when empty", async () => {
+    const dto = plainToInstance(GetMessagesQueryDto, {});
+    const errors = await validate(dto);
+
+    expect(errors).toHaveLength(0);
+    expect(dto.limit).toBe(50);
+    expect(dto.skip).toBe(0);
+  });
+
+  it("should reject limit greater than 200", async () => {
+    const dto = plainToInstance(GetMessagesQueryDto, {
+      limit: 201,
+      skip: 0,
+    });
+    const errors = await validate(dto);
+
+    expect(errors.length).toBeGreaterThan(0);
+    expect(errors.some((error) => error.property === "limit")).toBe(true);
+  });
+
+  it("should reject negative skip", async () => {
+    const dto = plainToInstance(GetMessagesQueryDto, {
+      limit: 50,
+      skip: -1,
+    });
+    const errors = await validate(dto);
+
+    expect(errors.length).toBeGreaterThan(0);
+    expect(errors.some((error) => error.property === "skip")).toBe(true);
+  });
+});

apps/orchestrator/src/api/agents/dto/get-messages-query.dto.ts

@@ -0,0 +1,17 @@
+import { Type } from "class-transformer";
+import { IsInt, IsOptional, Max, Min } from "class-validator";
+
+export class GetMessagesQueryDto {
+  @IsOptional()
+  @Type(() => Number)
+  @IsInt()
+  @Min(1)
+  @Max(200)
+  limit = 50;
+
+  @IsOptional()
+  @Type(() => Number)
+  @IsInt()
+  @Min(0)
+  skip = 0;
+}

apps/orchestrator/src/api/agents/dto/inject-agent.dto.ts

@@ -0,0 +1,7 @@
+import { IsNotEmpty, IsString } from "class-validator";
+
+export class InjectAgentDto {
+  @IsString()
+  @IsNotEmpty()
+  message!: string;
+}

apps/orchestrator/vitest.config.ts

@@ -4,6 +4,7 @@ export default defineConfig({
   test: {
     globals: true,
     environment: "node",
+    setupFiles: ["reflect-metadata"],
     exclude: ["**/node_modules/**", "**/dist/**", "**/tests/integration/**"],
     include: ["src/**/*.spec.ts", "src/**/*.test.ts"],
     coverage: {

docs/TASKS.md

@@ -122,10 +122,10 @@ Target version: `v0.0.23`
 | id          | status      | milestone     | description                                                                                      | issue | repo         | branch                 | depends_on                                      | blocks                                                      | agent | started_at | completed_at | estimate | used | notes                                         |
 | ----------- | ----------- | ------------- | ------------------------------------------------------------------------------------------------ | ----- | ------------ | ---------------------- | ----------------------------------------------- | ----------------------------------------------------------- | ----- | ---------- | ------------ | -------- | ---- | --------------------------------------------- |
 | MS23-P0-001 | done        | p0-foundation | Prisma schema: AgentConversationMessage, AgentSessionTree, AgentProviderConfig, OperatorAuditLog | #693  | api          | feat/ms23-p0-schema    | —                                               | MS23-P0-002,MS23-P0-003,MS23-P0-004,MS23-P0-005,MS23-P1-001 | codex | 2026-03-06 | 2026-03-06   | 15K      | —    | taskSource field per mosaic-queue note in PRD |
-| MS23-P0-002 | in-progress | p0-foundation | Agent message ingestion: wire spawner/lifecycle to write messages to DB                          | #693  | orchestrator | feat/ms23-p0-ingestion | MS23-P0-001                                     | MS23-P0-006                                                 | codex | 2026-03-06 | —            | 20K      | —    |                                               |
-| MS23-P0-003 | not-started | p0-foundation | Orchestrator API: GET /agents/:id/messages + SSE stream endpoint                                 | #693  | orchestrator | feat/ms23-p0-stream    | MS23-P0-001                                     | MS23-P0-006                                                 | —     | —          | —            | 20K      | —    |                                               |
-| MS23-P0-004 | not-started | p0-foundation | Orchestrator API: POST /agents/:id/inject + pause/resume endpoints                               | #693  | orchestrator | feat/ms23-p0-controls  | MS23-P0-001                                     | MS23-P0-006                                                 | —     | —          | —            | 15K      | —    |                                               |
-| MS23-P0-005 | not-started | p0-foundation | Subagent tree: parentAgentId on spawn registration + GET /agents/tree                            | #693  | orchestrator | feat/ms23-p0-tree      | MS23-P0-001                                     | MS23-P0-006                                                 | —     | —          | —            | 15K      | —    |                                               |
+| MS23-P0-002 | done        | p0-foundation | Agent message ingestion: wire spawner/lifecycle to write messages to DB                          | #693  | orchestrator | feat/ms23-p0-ingestion | MS23-P0-001                                     | MS23-P0-006                                                 | codex | 2026-03-06 | 2026-03-07      | 20K      | —    |                                               |
+| MS23-P0-003 | done        | p0-foundation | Orchestrator API: GET /agents/:id/messages + SSE stream endpoint                                 | #693  | orchestrator | feat/ms23-p0-stream    | MS23-P0-001                                     | MS23-P0-006                                                 | codex | 2026-03-06 | 2026-03-07      | 20K      | —    |                                               |
+| MS23-P0-004 | done        | p0-foundation | Orchestrator API: POST /agents/:id/inject + pause/resume endpoints                               | #693  | orchestrator | feat/ms23-p0-controls  | MS23-P0-001                                     | MS23-P0-006                                                 | codex | 2026-03-07 | 2026-03-07 | 15K      | —    |                                               |
+| MS23-P0-005 | in-progress | p0-foundation | Subagent tree: parentAgentId on spawn registration + GET /agents/tree                            | #693  | orchestrator | feat/ms23-p0-tree      | MS23-P0-001                                     | MS23-P0-006                                                 | —     | —          | —            | 15K      | —    |                                               |
 | MS23-P0-006 | not-started | p0-foundation | Unit + integration tests for all P0 orchestrator endpoints                                       | #693  | orchestrator | test/ms23-p0           | MS23-P0-002,MS23-P0-003,MS23-P0-004,MS23-P0-005 | MS23-P1-001                                                 | —     | —          | —            | 20K      | —    | Phase 0 gate: SSE stream verified via curl    |
 
 ### Phase 1 — Provider Interface (Plugin Architecture)

pnpm-lock.yaml

@@ -389,6 +389,9 @@ importers:
       '@vitest/coverage-v8':
         specifier: ^4.0.18
         version: 4.0.18(vitest@4.0.18(@opentelemetry/api@1.9.0)(@types/node@22.19.7)(jiti@2.6.1)(jsdom@26.1.0)(terser@5.46.0)(tsx@4.21.0)(yaml@2.8.2))
+      prisma:
+        specifier: ^6.19.2
+        version: 6.19.2(magicast@0.3.5)(typescript@5.9.3)
       ts-node:
         specifier: ^10.9.2
         version: 10.9.2(@swc/core@1.15.11)(@types/node@22.19.7)(typescript@5.9.3)