diff --git a/apps/server/execution/quality-review.test.ts b/apps/server/execution/quality-review.test.ts
new file mode 100644
index 0000000..ed8f780
--- /dev/null
+++ b/apps/server/execution/quality-review.test.ts
@@ -0,0 +1,582 @@
+/**
+ * Quality Review Service Tests
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { computeQualifyingFiles, shouldRunQualityReview, runQualityReview } from './quality-review.js';
+import type { BranchManager } from '../git/branch-manager.js';
+import type { AgentRepository } from '../db/repositories/agent-repository.js';
+import type { TaskRepository } from '../db/repositories/task-repository.js';
+import type { InitiativeRepository } from '../db/repositories/initiative-repository.js';
+import type { AgentManager } from '../agent/types.js';
+
+function makeBranchManager(overrides: Partial<BranchManager> = {}): BranchManager {
+  return {
+    ensureBranch: vi.fn(),
+    mergeBranch: vi.fn(),
+    diffBranches: vi.fn(),
+    diffBranchesStat: vi.fn().mockResolvedValue([]),
+    diffFileSingle: vi.fn(),
+    getHeadCommitHash: vi.fn(),
+    deleteBranch: vi.fn(),
+    branchExists: vi.fn(),
+    remoteBranchExists: vi.fn(),
+    listCommits: vi.fn(),
+    diffCommit: vi.fn(),
+    getMergeBase: vi.fn(),
+    pushBranch: vi.fn(),
+    checkMergeability: vi.fn(),
+    fetchRemote: vi.fn(),
+    fastForwardBranch: vi.fn(),
+    updateRef: vi.fn(),
+    ...overrides,
+  };
+}
+
+function makeAgentRepository(overrides: Partial<AgentRepository> = {}): AgentRepository {
+  return {
+    create: vi.fn(),
+    findById: vi.fn().mockResolvedValue(null),
+    findByName: vi.fn(),
+    findByTaskId: vi.fn(),
+    findBySessionId: vi.fn(),
+    findAll: vi.fn(),
+    findByStatus: vi.fn(),
+    update: vi.fn(),
+    delete: vi.fn(),
+    ...overrides,
+  } as unknown as AgentRepository;
+}
+
+function makeTaskRepository(overrides: Partial<TaskRepository> = {}): TaskRepository {
+  return {
+    create: vi.fn(),
+    findById: vi.fn().mockResolvedValue(null),
+    findByParentTaskId: vi.fn(),
+    findByInitiativeId: vi.fn(),
+    findByPhaseId: vi.fn(),
+    update: vi.fn().mockResolvedValue({}),
+    delete: vi.fn(),
+    createDependency: vi.fn(),
+    getDependencies: vi.fn(),
+    ...overrides,
+  } as unknown as TaskRepository;
+}
+
+function makeInitiativeRepository(overrides: Partial<InitiativeRepository> = {}): InitiativeRepository {
+  return {
+    create: vi.fn(),
+    findById: vi.fn().mockResolvedValue(null),
+    findAll: vi.fn(),
+    findByStatus: vi.fn(),
+    update: vi.fn(),
+    findByProjectId: vi.fn(),
+    delete: vi.fn(),
+    ...overrides,
+  } as unknown as InitiativeRepository;
+}
+
+function makeAgentManager(overrides: Partial<AgentManager> = {}): AgentManager {
+  return {
+    spawn: vi.fn().mockResolvedValue({ id: 'review-agent-1' }),
+    stop: vi.fn(),
+    list: vi.fn(),
+    get: vi.fn(),
+    getByName: vi.fn(),
+    resume: vi.fn(),
+    getResult: vi.fn(),
+    getPendingQuestions: vi.fn(),
+    delete: vi.fn(),
+    dismiss: vi.fn(),
+    resumeForConversation: vi.fn(),
+    sendUserMessage: vi.fn(),
+    ...overrides,
+  } as unknown as AgentManager;
+}
+
+// ---------------------------------------------------------------------------
+// computeQualifyingFiles
+// ---------------------------------------------------------------------------
+
+describe('computeQualifyingFiles', () => {
+  it('includes .ts files', async () => {
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockResolvedValue([
+        { path: 'src/foo.ts', status: 'modified', additions: 5, deletions: 2 },
+      ]),
+    });
+    const result = await computeQualifyingFiles('/repo', 'task-branch', 'main', branchManager);
+    expect(result).toEqual(['src/foo.ts']);
+  });
+
+  it('includes .tsx, .js, .css, .json and other non-excluded types', async () => {
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockResolvedValue([
+        { path: 'src/App.tsx', status: 'modified', additions: 1, deletions: 0 },
+        { path: 'src/utils.js', status: 'added', additions: 10, deletions: 0 },
+        { path: 'src/style.css', status: 'modified', additions: 3, deletions: 1 },
+        { path: 'config.json', status: 'modified', additions: 2, deletions: 2 },
+      ]),
+    });
+    const result = await computeQualifyingFiles('/repo', 'task-branch', 'main', branchManager);
+    expect(result).toEqual(['src/App.tsx', 'src/utils.js', 'src/style.css', 'config.json']);
+  });
+
+  it('excludes files ending with .gen.ts', async () => {
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockResolvedValue([
+        { path: 'src/foo.ts', status: 'modified', additions: 5, deletions: 2 },
+        { path: 'src/routes.gen.ts', status: 'modified', additions: 100, deletions: 0 },
+        { path: 'types.gen.ts', status: 'added', additions: 50, deletions: 0 },
+      ]),
+    });
+    const result = await computeQualifyingFiles('/repo', 'task-branch', 'main', branchManager);
+    expect(result).toEqual(['src/foo.ts']);
+  });
+
+  it('excludes files under dist/', async () => {
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockResolvedValue([
+        { path: 'src/foo.ts', status: 'modified', additions: 5, deletions: 2 },
+        { path: 'dist/bundle.js', status: 'modified', additions: 1, deletions: 0 },
+        { path: 'apps/server/dist/index.js', status: 'added', additions: 10, deletions: 0 },
+        { path: 'packages/foo/dist/foo.js', status: 'modified', additions: 3, deletions: 0 },
+      ]),
+    });
+    const result = await computeQualifyingFiles('/repo', 'task-branch', 'main', branchManager);
+    expect(result).toEqual(['src/foo.ts']);
+  });
+
+  it('returns empty array when diff throws', async () => {
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockRejectedValue(new Error('branch not found')),
+    });
+    const result = await computeQualifyingFiles('/repo', 'task-branch', 'main', branchManager);
+    expect(result).toEqual([]);
+  });
+
+  it('passes baseBranch as first branch arg and taskBranch as second to diffBranchesStat', async () => {
+    const diffSpy = vi.fn().mockResolvedValue([]);
+    const branchManager = makeBranchManager({ diffBranchesStat: diffSpy });
+    await computeQualifyingFiles('/repo', 'task-branch', 'main', branchManager);
+    expect(diffSpy).toHaveBeenCalledWith('/repo', 'main', 'task-branch');
+  });
+});
+
+// ---------------------------------------------------------------------------
+// shouldRunQualityReview
+// ---------------------------------------------------------------------------
+
+describe('shouldRunQualityReview', () => {
+  const BASE_PARAMS = {
+    agentId: 'agent-1',
+    taskId: 'task-1',
+    stopReason: 'task_complete',
+    repoPath: '/repo',
+    taskBranch: 'cw/init-task-task-1',
+    baseBranch: 'main',
+  };
+
+  it('returns false when stopReason is not task_complete', async () => {
+    const agentRepository = makeAgentRepository();
+    const taskRepository = makeTaskRepository();
+    const initiativeRepository = makeInitiativeRepository();
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      stopReason: 'error',
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+    // Should short-circuit: no repo lookups
+    expect(agentRepository.findById).not.toHaveBeenCalled();
+  });
+
+  it('returns false when agent mode is errand', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'errand' }),
+    });
+    const taskRepository = makeTaskRepository();
+    const initiativeRepository = makeInitiativeRepository();
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+    expect(taskRepository.findById).not.toHaveBeenCalled();
+  });
+
+  it('returns false when agent is not found', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue(null),
+    });
+    const taskRepository = makeTaskRepository();
+    const initiativeRepository = makeInitiativeRepository();
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+  });
+
+  it('returns false when task status is quality_review (recursion guard)', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue({
+        id: 'task-1',
+        status: 'quality_review',
+        initiativeId: 'init-1',
+      }),
+    });
+    const initiativeRepository = makeInitiativeRepository();
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+    expect(initiativeRepository.findById).not.toHaveBeenCalled();
+  });
+
+  it('returns false when task status is not in_progress and not quality_review', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue({
+        id: 'task-1',
+        status: 'completed',
+        initiativeId: 'init-1',
+      }),
+    });
+    const initiativeRepository = makeInitiativeRepository();
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+  });
+
+  it('returns false when task is not found', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue(null),
+    });
+    const initiativeRepository = makeInitiativeRepository();
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+  });
+
+  it('returns false when task has no initiativeId', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue({
+        id: 'task-1',
+        status: 'in_progress',
+        initiativeId: null,
+      }),
+    });
+    const initiativeRepository = makeInitiativeRepository();
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+    expect(initiativeRepository.findById).not.toHaveBeenCalled();
+  });
+
+  it('returns false when initiative.qualityReview is false', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue({
+        id: 'task-1',
+        status: 'in_progress',
+        initiativeId: 'init-1',
+      }),
+    });
+    const initiativeRepository = makeInitiativeRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'init-1', qualityReview: false }),
+    });
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockResolvedValue([
+        { path: 'src/foo.ts', status: 'modified', additions: 5, deletions: 2 },
+      ]),
+    });
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+    expect(branchManager.diffBranchesStat).not.toHaveBeenCalled();
+  });
+
+  it('returns false when initiative is not found', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue({
+        id: 'task-1',
+        status: 'in_progress',
+        initiativeId: 'init-1',
+      }),
+    });
+    const initiativeRepository = makeInitiativeRepository({
+      findById: vi.fn().mockResolvedValue(null),
+    });
+    const branchManager = makeBranchManager();
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+  });
+
+  it('returns false when no qualifying files in changeset', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue({
+        id: 'task-1',
+        status: 'in_progress',
+        initiativeId: 'init-1',
+      }),
+    });
+    const initiativeRepository = makeInitiativeRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'init-1', qualityReview: true }),
+    });
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockResolvedValue([
+        { path: 'dist/bundle.js', status: 'modified', additions: 10, deletions: 0 },
+        { path: 'src/routes.gen.ts', status: 'added', additions: 50, deletions: 0 },
+      ]),
+    });
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: false, qualifyingFiles: [] });
+  });
+
+  it('returns true with qualifying files when all conditions pass', async () => {
+    const agentRepository = makeAgentRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'agent-1', mode: 'execute' }),
+    });
+    const taskRepository = makeTaskRepository({
+      findById: vi.fn().mockResolvedValue({
+        id: 'task-1',
+        status: 'in_progress',
+        initiativeId: 'init-1',
+      }),
+    });
+    const initiativeRepository = makeInitiativeRepository({
+      findById: vi.fn().mockResolvedValue({ id: 'init-1', qualityReview: true }),
+    });
+    const branchManager = makeBranchManager({
+      diffBranchesStat: vi.fn().mockResolvedValue([
+        { path: 'src/foo.ts', status: 'modified', additions: 5, deletions: 2 },
+        { path: 'src/bar.ts', status: 'added', additions: 20, deletions: 0 },
+      ]),
+    });
+
+    const result = await shouldRunQualityReview({
+      ...BASE_PARAMS,
+      agentRepository,
+      taskRepository,
+      initiativeRepository,
+      branchManager,
+    });
+
+    expect(result).toEqual({ run: true, qualifyingFiles: ['src/foo.ts', 'src/bar.ts'] });
+  });
+});
+
+// ---------------------------------------------------------------------------
+// runQualityReview
+// ---------------------------------------------------------------------------
+
+describe('runQualityReview', () => {
+  const BASE_RUN_PARAMS = {
+    taskId: 'task-1',
+    taskBranch: 'cw/init-task-task-1',
+    baseBranch: 'main',
+    initiativeId: 'init-1',
+    qualifyingFiles: ['src/foo.ts', 'src/bar.ts'],
+  };
+
+  const makeLog = () => ({
+    info: vi.fn(),
+    error: vi.fn(),
+    warn: vi.fn(),
+    debug: vi.fn(),
+    trace: vi.fn(),
+    fatal: vi.fn(),
+    child: vi.fn(),
+  });
+
+  it('transitions task status to quality_review before spawning', async () => {
+    const taskRepository = makeTaskRepository();
+    const agentManager = makeAgentManager();
+    const log = makeLog();
+
+    await runQualityReview({
+      ...BASE_RUN_PARAMS,
+      taskRepository,
+      agentManager,
+      log: log as any,
+    });
+
+    const updateCalls = vi.mocked(taskRepository.update).mock.calls;
+    expect(updateCalls[0]).toEqual(['task-1', { status: 'quality_review' }]);
+    // spawn should come after the update
+    expect(agentManager.spawn).toHaveBeenCalled();
+  });
+
+  it('calls agentManager.spawn with mode execute and correct branchName', async () => {
+    const taskRepository = makeTaskRepository();
+    const agentManager = makeAgentManager();
+    const log = makeLog();
+
+    await runQualityReview({
+      ...BASE_RUN_PARAMS,
+      taskRepository,
+      agentManager,
+      log: log as any,
+    });
+
+    expect(agentManager.spawn).toHaveBeenCalledWith(
+      expect.objectContaining({
+        taskId: 'task-1',
+        initiativeId: 'init-1',
+        mode: 'execute',
+        baseBranch: 'main',
+        branchName: 'cw/init-task-task-1',
+      }),
+    );
+  });
+
+  it('prompt includes /simplify instruction and qualifying files', async () => {
+    const taskRepository = makeTaskRepository();
+    const agentManager = makeAgentManager();
+    const log = makeLog();
+
+    await runQualityReview({
+      ...BASE_RUN_PARAMS,
+      taskRepository,
+      agentManager,
+      log: log as any,
+    });
+
+    const spawnCall = vi.mocked(agentManager.spawn).mock.calls[0][0];
+    expect(spawnCall.prompt).toContain('/simplify');
+    expect(spawnCall.prompt).toContain('src/foo.ts');
+    expect(spawnCall.prompt).toContain('src/bar.ts');
+  });
+
+  it('logs reviewAgentId at info level after spawn', async () => {
+    const taskRepository = makeTaskRepository();
+    const agentManager = makeAgentManager({
+      spawn: vi.fn().mockResolvedValue({ id: 'review-agent-42' }),
+    });
+    const log = makeLog();
+
+    await runQualityReview({
+      ...BASE_RUN_PARAMS,
+      taskRepository,
+      agentManager,
+      log: log as any,
+    });
+
+    expect(log.info).toHaveBeenCalledWith(
+      expect.objectContaining({ taskId: 'task-1', reviewAgentId: 'review-agent-42' }),
+      expect.any(String),
+    );
+  });
+
+  it('on spawn failure: transitions task to completed and does not throw', async () => {
+    const taskRepository = makeTaskRepository();
+    const agentManager = makeAgentManager({
+      spawn: vi.fn().mockRejectedValue(new Error('spawn failed')),
+    });
+    const log = makeLog();
+
+    await expect(
+      runQualityReview({
+        ...BASE_RUN_PARAMS,
+        taskRepository,
+        agentManager,
+        log: log as any,
+      }),
+    ).resolves.toBeUndefined();
+
+    expect(log.error).toHaveBeenCalled();
+    expect(taskRepository.update).toHaveBeenCalledWith('task-1', { status: 'completed' });
+  });
+});
diff --git a/apps/server/execution/quality-review.ts b/apps/server/execution/quality-review.ts
new file mode 100644
index 0000000..f54eb35
--- /dev/null
+++ b/apps/server/execution/quality-review.ts
@@ -0,0 +1,152 @@
+/**
+ * Quality Review Service
+ *
+ * Decides whether to run a quality review after a task agent completes,
+ * and orchestrates spawning the review agent.
+ *
+ * All dependencies are passed as function parameters (hexagonal DI pattern).
+ */
+
+import type { BranchManager } from '../git/branch-manager.js';
+import type { AgentRepository } from '../db/repositories/agent-repository.js';
+import type { TaskRepository } from '../db/repositories/task-repository.js';
+import type { InitiativeRepository } from '../db/repositories/initiative-repository.js';
+import type { AgentManager } from '../agent/types.js';
+import type { Logger } from 'pino';
+
+// ---------------------------------------------------------------------------
+// computeQualifyingFiles
+// ---------------------------------------------------------------------------
+
+/**
+ * Compute source files in the diff between taskBranch and baseBranch that
+ * qualify for a quality review (excludes *.gen.ts and dist/ paths).
+ *
+ * Returns [] if the diff throws (treated as no qualifying files).
+ */
+export async function computeQualifyingFiles(
+  repoPath: string,
+  taskBranch: string,
+  baseBranch: string,
+  branchManager: BranchManager,
+): Promise<string[]> {
+  try {
+    const entries = await branchManager.diffBranchesStat(repoPath, baseBranch, taskBranch);
+    return entries
+      .map((e) => e.path)
+      .filter((p) => !p.endsWith('.gen.ts'))
+      .filter((p) => !p.startsWith('dist/') && !p.includes('/dist/'));
+  } catch {
+    return [];
+  }
+}
+
+// ---------------------------------------------------------------------------
+// shouldRunQualityReview
+// ---------------------------------------------------------------------------
+
+export interface QualityReviewCheckParams {
+  agentId: string;
+  taskId: string;
+  stopReason: string;
+  repoPath: string;
+  taskBranch: string;
+  baseBranch: string;
+  agentRepository: AgentRepository;
+  taskRepository: TaskRepository;
+  initiativeRepository: InitiativeRepository;
+  branchManager: BranchManager;
+}
+
+/**
+ * Determine whether a quality review should be run for the given agent stop event.
+ *
+ * Returns { run: true, qualifyingFiles } only when all six conditions pass:
+ * 1. stopReason === 'task_complete'
+ * 2. Agent mode is 'execute'
+ * 3. Task status is 'in_progress' (not 'quality_review' — recursion guard)
+ * 4. task.initiativeId is non-null
+ * 5. initiative.qualityReview === true
+ * 6. computeQualifyingFiles() returns a non-empty array
+ */
+export async function shouldRunQualityReview(
+  params: QualityReviewCheckParams,
+): Promise<{ run: boolean; qualifyingFiles: string[] }> {
+  const { agentId, taskId, stopReason, repoPath, taskBranch, baseBranch, agentRepository, taskRepository, initiativeRepository, branchManager } = params;
+  const NO = { run: false, qualifyingFiles: [] };
+
+  // 1. Only fire on task_complete
+  if (stopReason !== 'task_complete') return NO;
+
+  // 2. Agent mode must be 'execute'
+  const agent = await agentRepository.findById(agentId);
+  if (!agent || agent.mode !== 'execute') return NO;
+
+  // 3. Task status must be 'in_progress' (recursion guard: skip if already quality_review)
+  const task = await taskRepository.findById(taskId);
+  if (!task) return NO;
+  if (task.status === 'quality_review') return NO;
+  if (task.status !== 'in_progress') return NO;
+
+  // 4. Task must belong to an initiative
+  if (!task.initiativeId) return NO;
+
+  // 5. Initiative must have qualityReview enabled
+  const initiative = await initiativeRepository.findById(task.initiativeId);
+  if (!initiative || !initiative.qualityReview) return NO;
+
+  // 6. Must have qualifying files in the changeset
+  const qualifyingFiles = await computeQualifyingFiles(repoPath, taskBranch, baseBranch, branchManager);
+  if (qualifyingFiles.length === 0) return NO;
+
+  return { run: true, qualifyingFiles };
+}
+
+// ---------------------------------------------------------------------------
+// runQualityReview
+// ---------------------------------------------------------------------------
+
+export interface QualityReviewRunParams {
+  taskId: string;
+  taskBranch: string;
+  baseBranch: string;
+  initiativeId: string;
+  qualifyingFiles: string[];
+  taskRepository: TaskRepository;
+  agentManager: AgentManager;
+  log: Logger;
+}
+
+/**
+ * Spawn a quality review agent on the task branch.
+ *
+ * 1. Transitions task to 'quality_review'
+ * 2. Builds /simplify prompt with qualifying files
+ * 3. Spawns execute-mode agent on the same task branch
+ * 4. Logs the review agent ID
+ * 5. On spawn error: logs and transitions task to 'completed' — never throws
+ */
+export async function runQualityReview(params: QualityReviewRunParams): Promise<void> {
+  const { taskId, taskBranch, baseBranch, initiativeId, qualifyingFiles, taskRepository, agentManager, log } = params;
+
+  await taskRepository.update(taskId, { status: 'quality_review' });
+
+  const fileList = qualifyingFiles.join('\n');
+  const prompt = `Run /simplify to review and fix code quality in this branch.\n\n${fileList}`;
+
+  try {
+    const reviewAgent = await agentManager.spawn({
+      taskId,
+      initiativeId,
+      prompt,
+      mode: 'execute',
+      baseBranch,
+      branchName: taskBranch,
+    });
+
+    log.info({ taskId, reviewAgentId: reviewAgent.id }, 'quality review agent spawned');
+  } catch (err) {
+    log.error({ taskId, err: err instanceof Error ? err.message : String(err) }, 'quality review agent spawn failed');
+    await taskRepository.update(taskId, { status: 'completed' });
+  }
+}