takt: github-issue-215-issue (#294)

src/__tests__/resolveTask.test.ts

@@ -0,0 +1,86 @@
+/**
+ * Tests for task execution resolution.
+ */
+
+import { describe, it, expect, afterEach } from 'vitest';
+import * as fs from 'node:fs';
+import * as os from 'node:os';
+import * as path from 'node:path';
+import type { TaskInfo } from '../infra/task/index.js';
+import { resolveTaskExecution } from '../features/tasks/execute/resolveTask.js';
+
+const tempRoots = new Set<string>();
+
+afterEach(() => {
+  for (const root of tempRoots) {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+  tempRoots.clear();
+});
+
+function createTempProjectDir(): string {
+  const root = fs.mkdtempSync(path.join(os.tmpdir(), 'takt-resolve-task-test-'));
+  tempRoots.add(root);
+  return root;
+}
+
+function createTask(overrides: Partial<TaskInfo>): TaskInfo {
+  return {
+    filePath: '/tasks/task.yaml',
+    name: 'task-name',
+    content: 'Run task',
+    createdAt: '2026-01-01T00:00:00.000Z',
+    status: 'pending',
+    data: { task: 'Run task' },
+    ...overrides,
+  };
+}
+
+describe('resolveTaskExecution', () => {
+  it('should return defaults when task data is null', async () => {
+    const root = createTempProjectDir();
+    const task = createTask({ data: null });
+
+    const result = await resolveTaskExecution(task, root, 'default');
+
+    expect(result).toEqual({
+      execCwd: root,
+      execPiece: 'default',
+      isWorktree: false,
+      autoPr: false,
+    });
+  });
+
+  it('should generate report context and copy issue-bearing task spec', async () => {
+    const root = createTempProjectDir();
+    const taskDir = '.takt/tasks/issue-task-123';
+    const sourceTaskDir = path.join(root, taskDir);
+    const sourceOrderPath = path.join(sourceTaskDir, 'order.md');
+    fs.mkdirSync(sourceTaskDir, { recursive: true });
+    fs.writeFileSync(sourceOrderPath, '# task instruction');
+
+    const task = createTask({
+      taskDir,
+      data: {
+        task: 'Run issue task',
+        issue: 12345,
+        auto_pr: true,
+      },
+    });
+
+    const result = await resolveTaskExecution(task, root, 'default');
+    const expectedReportOrderPath = path.join(root, '.takt', 'runs', 'issue-task-123', 'context', 'task', 'order.md');
+
+    expect(result).toMatchObject({
+      execCwd: root,
+      execPiece: 'default',
+      isWorktree: false,
+      autoPr: true,
+      reportDirName: 'issue-task-123',
+      issueNumber: 12345,
+      taskPrompt: expect.stringContaining('Primary spec: `.takt/runs/issue-task-123/context/task/order.md`'),
+    });
+    expect(fs.existsSync(expectedReportOrderPath)).toBe(true);
+    expect(fs.readFileSync(expectedReportOrderPath, 'utf-8')).toBe('# task instruction');
+  });
+});

src/__tests__/task-prefix-writer.test.ts

@@ -15,6 +15,16 @@ describe('TaskPrefixWriter', () => {
   });
 
   describe('constructor', () => {
+    it('should use issue number when provided', () => {
+      const writer = new TaskPrefixWriter({ taskName: 'my-task', colorIndex: 0, issue: 123, writeFn });
+
+      writer.writeLine('Issue task');
+
+      expect(output).toHaveLength(1);
+      expect(output[0]).toContain('[#123]');
+      expect(output[0]).not.toContain('[my-t]');
+    });
+
     it('should cycle colors for different colorIndex values', () => {
       const writer0 = new TaskPrefixWriter({ taskName: 'task-a', colorIndex: 0, writeFn });
       const writer4 = new TaskPrefixWriter({ taskName: 'task-a', colorIndex: 4, writeFn });
@@ -27,6 +37,16 @@ describe('TaskPrefixWriter', () => {
       expect(output[1]).toContain('\x1b[36m');
     });
 
+    it('should use display label when provided', () => {
+      const writer = new TaskPrefixWriter({ taskName: 'my-task', colorIndex: 0, displayLabel: '#12345', writeFn });
+
+      writer.writeLine('Hello World');
+
+      expect(output).toHaveLength(1);
+      expect(output[0]).toContain('[#12345]');
+      expect(output[0]).not.toContain('[my-t]');
+    });
+
     it('should assign correct colors in order', () => {
       const writers = [0, 1, 2, 3].map(
         (i) => new TaskPrefixWriter({ taskName: `t${i}`, colorIndex: i, writeFn }),

src/__tests__/taskExecution.test.ts

@@ -1,65 +1,54 @@
 /**
- * Tests for resolveTaskExecution
+ * Tests for execute task option propagation.
  */
 
-import * as fs from 'node:fs';
-import * as os from 'node:os';
-import * as path from 'node:path';
 import { describe, it, expect, vi, beforeEach } from 'vitest';
+import type { TaskInfo } from '../infra/task/index.js';
+
+const { mockResolveTaskExecution, mockExecutePiece, mockLoadPieceByIdentifier, mockLoadGlobalConfig, mockLoadProjectConfig, mockBuildTaskResult, mockPersistTaskResult, mockPostExecutionFlow } =
+  vi.hoisted(() => ({
+    mockResolveTaskExecution: vi.fn(),
+    mockExecutePiece: vi.fn(),
+    mockLoadPieceByIdentifier: vi.fn(),
+    mockLoadGlobalConfig: vi.fn(),
+    mockLoadProjectConfig: vi.fn(),
+    mockBuildTaskResult: vi.fn(),
+    mockPersistTaskResult: vi.fn(),
+    mockPostExecutionFlow: vi.fn(),
+  }));
+
+vi.mock('../features/tasks/execute/resolveTask.js', () => ({
+  resolveTaskExecution: (...args: unknown[]) => mockResolveTaskExecution(...args),
+}));
+
+vi.mock('../features/tasks/execute/pieceExecution.js', () => ({
+  executePiece: (...args: unknown[]) => mockExecutePiece(...args),
+}));
+
+vi.mock('../features/tasks/execute/taskResultHandler.js', () => ({
+  buildTaskResult: (...args: unknown[]) => mockBuildTaskResult(...args),
+  persistTaskResult: (...args: unknown[]) => mockPersistTaskResult(...args),
+}));
+
+vi.mock('../features/tasks/execute/postExecution.js', () => ({
+  postExecutionFlow: (...args: unknown[]) => mockPostExecutionFlow(...args),
+}));
 
-// Mock dependencies before importing the module under test
 vi.mock('../infra/config/index.js', () => ({
-  loadPieceByIdentifier: vi.fn(),
+  loadPieceByIdentifier: (...args: unknown[]) => mockLoadPieceByIdentifier(...args),
-  isPiecePath: vi.fn(() => false),
+  isPiecePath: () => false,
-  loadGlobalConfig: vi.fn(() => ({})),
+  loadGlobalConfig: () => mockLoadGlobalConfig(),
+  loadProjectConfig: () => mockLoadProjectConfig(),
 }));
 
-import { loadGlobalConfig } from '../infra/config/index.js';
+vi.mock('../shared/ui/index.js', () => ({
-const mockLoadGlobalConfig = vi.mocked(loadGlobalConfig);
-
-vi.mock('../infra/task/index.js', async (importOriginal) => ({
-  ...(await importOriginal<Record<string, unknown>>()),
-  TaskRunner: vi.fn(),
-}));
-
-vi.mock('../infra/task/clone.js', async (importOriginal) => ({
-  ...(await importOriginal<Record<string, unknown>>()),
-  createSharedClone: vi.fn(),
-  removeClone: vi.fn(),
-}));
-
-vi.mock('../infra/task/git.js', async (importOriginal) => ({
-  ...(await importOriginal<Record<string, unknown>>()),
-  getCurrentBranch: vi.fn(() => 'main'),
-}));
-
-vi.mock('../infra/task/autoCommit.js', async (importOriginal) => ({
-  ...(await importOriginal<Record<string, unknown>>()),
-  autoCommitAndPush: vi.fn(),
-}));
-
-vi.mock('../infra/task/summarize.js', async (importOriginal) => ({
-  ...(await importOriginal<Record<string, unknown>>()),
-  summarizeTaskName: vi.fn(),
-}));
-
-vi.mock('../shared/ui/index.js', () => {
-  const info = vi.fn();
-  return {
   header: vi.fn(),
-    info,
+  info: vi.fn(),
   error: vi.fn(),
-    success: vi.fn(),
   status: vi.fn(),
+  success: vi.fn(),
   blankLine: vi.fn(),
-    withProgress: vi.fn(async (start, done, operation) => {
+}));
-      info(start);
-      const result = await operation();
-      info(typeof done === 'function' ? done(result) : done);
-      return result;
-    }),
-  };
-});
 
 vi.mock('../shared/utils/index.js', async (importOriginal) => ({
   ...(await importOriginal<Record<string, unknown>>()),
@@ -68,560 +57,81 @@ vi.mock('../shared/utils/index.js', async (importOriginal) => ({
     debug: vi.fn(),
     error: vi.fn(),
   }),
-  getErrorMessage: vi.fn((e) => e.message),
+  getErrorMessage: vi.fn((error: unknown) => String(error)),
 }));
 
-vi.mock('../features/tasks/execute/pieceExecution.js', () => ({
+vi.mock('../shared/i18n/index.js', () => ({
-  executePiece: vi.fn(),
+  getLabel: vi.fn((key: string) => key),
 }));
 
-vi.mock('../shared/context.js', () => ({
+import { executeAndCompleteTask } from '../features/tasks/execute/taskExecution.js';
-  isQuietMode: vi.fn(() => false),
-}));
 
-vi.mock('../shared/constants.js', () => ({
+const createTask = (name: string): TaskInfo => ({
-  DEFAULT_PIECE_NAME: 'default',
+  name,
-  DEFAULT_LANGUAGE: 'en',
+  content: `Task: ${name}`,
-}));
+  filePath: `/tasks/${name}.yaml`,
-
+  createdAt: '2026-02-16T00:00:00.000Z',
-import { createSharedClone } from '../infra/task/clone.js';
+  status: 'pending',
-import { getCurrentBranch } from '../infra/task/git.js';
+  data: { task: `Task: ${name}` },
-import { summarizeTaskName } from '../infra/task/summarize.js';
-import { info } from '../shared/ui/index.js';
-import { resolveTaskExecution } from '../features/tasks/index.js';
-import type { TaskInfo } from '../infra/task/index.js';
-
-const mockCreateSharedClone = vi.mocked(createSharedClone);
-const mockGetCurrentBranch = vi.mocked(getCurrentBranch);
-const mockSummarizeTaskName = vi.mocked(summarizeTaskName);
-const mockInfo = vi.mocked(info);
-
-beforeEach(() => {
-  vi.clearAllMocks();
 });
 
-describe('resolveTaskExecution', () => {
+describe('executeAndCompleteTask', () => {
-  it('should return defaults when task has no data', async () => {
+  beforeEach(() => {
-    // Given: Task without structured data
+    vi.clearAllMocks();
-    const task: TaskInfo = {
-      name: 'simple-task',
-      content: 'Simple task content',
-      filePath: '/tasks/simple-task.yaml',
-      createdAt: '2026-02-09T00:00:00.000Z',
-      status: 'pending',
-      data: null,
-    };
 
-    // When
+    mockLoadPieceByIdentifier.mockReturnValue({
-    const result = await resolveTaskExecution(task, '/project', 'default');
+      name: 'default',
-
+      movements: [],
-    // Then
+    });
-    expect(result).toEqual({
+    mockLoadGlobalConfig.mockReturnValue({
+      language: 'en',
+      provider: 'claude',
+      personaProviders: {},
+      providerProfiles: {},
+    });
+    mockLoadProjectConfig.mockReturnValue({
+      provider: 'claude',
+      providerProfiles: {},
+    });
+    mockBuildTaskResult.mockReturnValue({ success: true });
+    mockResolveTaskExecution.mockResolvedValue({
       execCwd: '/project',
       execPiece: 'default',
       isWorktree: false,
       autoPr: false,
-    });
+      taskPrompt: undefined,
-    expect(mockSummarizeTaskName).not.toHaveBeenCalled();
+      reportDirName: undefined,
-    expect(mockCreateSharedClone).not.toHaveBeenCalled();
-  });
-
-  it('should return defaults when data has no worktree option', async () => {
-    // Given: Task with data but no worktree
-    const task: TaskInfo = {
-      name: 'task-with-data',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.isWorktree).toBe(false);
-    expect(mockSummarizeTaskName).not.toHaveBeenCalled();
-  });
-
-  it('should create shared clone with AI-summarized slug when worktree option is true', async () => {
-    // Given: Task with worktree option
-    const task: TaskInfo = {
-      name: 'japanese-task',
-      content: '認証機能を追加する',
-      filePath: '/tasks/japanese-task.yaml',
-      data: {
-        task: '認証機能を追加する',
-        worktree: true,
-      },
-    };
-
-    mockSummarizeTaskName.mockResolvedValue('add-auth');
-    mockCreateSharedClone.mockReturnValue({
-      path: '/project/../20260128T0504-add-auth',
-      branch: 'takt/20260128T0504-add-auth',
-    });
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(mockSummarizeTaskName).toHaveBeenCalledWith('認証機能を追加する', { cwd: '/project' });
-    expect(mockCreateSharedClone).toHaveBeenCalledWith('/project', {
-      worktree: true,
       branch: undefined,
-      taskSlug: 'add-auth',
+      worktreePath: undefined,
-    });
+      baseBranch: undefined,
-    expect(mockGetCurrentBranch).toHaveBeenCalledWith('/project');
+      startMovement: undefined,
-    expect(result).toEqual({
+      retryNote: undefined,
-      execCwd: '/project/../20260128T0504-add-auth',
+      issueNumber: undefined,
-      execPiece: 'default',
-      isWorktree: true,
-      autoPr: false,
-      branch: 'takt/20260128T0504-add-auth',
-      worktreePath: '/project/../20260128T0504-add-auth',
-      baseBranch: 'main',
     });
+    mockExecutePiece.mockResolvedValue({ success: true });
   });
 
-  it('should display generating message before AI call', async () => {
+  it('should pass taskDisplayLabel from parallel options into executePiece', async () => {
-    // Given: Task with worktree
+    // Given: Parallel execution passes an issue-style taskDisplayLabel.
-    const task: TaskInfo = {
+    const task = createTask('task-with-issue');
-      name: 'test-task',
+    const taskDisplayLabel = '#12345';
-      content: 'Test task',
+    const abortController = new AbortController();
-      filePath: '/tasks/test.yaml',
-      data: {
-        task: 'Test task',
-        worktree: true,
-      },
-    };
-
-    mockSummarizeTaskName.mockResolvedValue('test-task');
-    mockCreateSharedClone.mockReturnValue({
-      path: '/project/../test-task',
-      branch: 'takt/test-task',
-    });
 
     // When
-    await resolveTaskExecution(task, '/project', 'default');
+    await executeAndCompleteTask(task, {} as never, '/project', 'default', undefined, {
-
+      abortSignal: abortController.signal,
-    // Then
+      taskPrefix: taskDisplayLabel,
-    expect(mockInfo).toHaveBeenCalledWith('Generating branch name...');
+      taskColorIndex: 0,
-    expect(mockInfo).toHaveBeenCalledWith('Branch name generated: test-task');
+      taskDisplayLabel,
     });
 
-  it('should use task content (not name) for AI summarization', async () => {
+    // Then: executePiece receives the propagated display label.
-    // Given: Task where name differs from content
+    expect(mockExecutePiece).toHaveBeenCalledTimes(1);
-    const task: TaskInfo = {
+    const pieceExecutionOptions = mockExecutePiece.mock.calls[0]?.[3] as {
-      name: 'old-file-name',
+      taskDisplayLabel?: string;
-      content: 'New feature implementation details',
+      taskPrefix?: string;
-      filePath: '/tasks/old-file-name.yaml',
-      data: {
-        task: 'New feature implementation details',
-        worktree: true,
-      },
     };
-
+    expect(pieceExecutionOptions?.taskDisplayLabel).toBe(taskDisplayLabel);
-    mockSummarizeTaskName.mockResolvedValue('new-feature');
+    expect(pieceExecutionOptions?.taskPrefix).toBe(taskDisplayLabel);
-    mockCreateSharedClone.mockReturnValue({
-      path: '/project/../new-feature',
-      branch: 'takt/new-feature',
-    });
-
-    // When
-    await resolveTaskExecution(task, '/project', 'default');
-
-    // Then: Should use content, not file name
-    expect(mockSummarizeTaskName).toHaveBeenCalledWith('New feature implementation details', { cwd: '/project' });
-  });
-
-  it('should use piece override from task data', async () => {
-    // Given: Task with piece override
-    const task: TaskInfo = {
-      name: 'task-with-piece',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-        piece: 'custom-piece',
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.execPiece).toBe('custom-piece');
-  });
-
-  it('should pass branch option to createSharedClone when specified', async () => {
-    // Given: Task with custom branch
-    const task: TaskInfo = {
-      name: 'task-with-branch',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-        worktree: true,
-        branch: 'feature/custom-branch',
-      },
-    };
-
-    mockSummarizeTaskName.mockResolvedValue('custom-task');
-    mockCreateSharedClone.mockReturnValue({
-      path: '/project/../custom-task',
-      branch: 'feature/custom-branch',
-    });
-
-    // When
-    await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(mockCreateSharedClone).toHaveBeenCalledWith('/project', {
-      worktree: true,
-      branch: 'feature/custom-branch',
-      taskSlug: 'custom-task',
-    });
-  });
-
-  it('should display clone creation info', async () => {
-    // Given: Task with worktree
-    const task: TaskInfo = {
-      name: 'info-task',
-      content: 'Info task',
-      filePath: '/tasks/info.yaml',
-      data: {
-        task: 'Info task',
-        worktree: true,
-      },
-    };
-
-    mockSummarizeTaskName.mockResolvedValue('info-task');
-    mockCreateSharedClone.mockReturnValue({
-      path: '/project/../20260128-info-task',
-      branch: 'takt/20260128-info-task',
-    });
-
-    // When
-    await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(mockInfo).toHaveBeenCalledWith(
-      'Clone created: /project/../20260128-info-task (branch: takt/20260128-info-task)'
-    );
-  });
-
-  it('should return autoPr from task YAML when specified', async () => {
-    // Given: Task with auto_pr option
-    const task: TaskInfo = {
-      name: 'task-with-auto-pr',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-        auto_pr: true,
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.autoPr).toBe(true);
-  });
-
-  it('should return autoPr: false from task YAML when specified as false', async () => {
-    // Given: Task with auto_pr: false
-    const task: TaskInfo = {
-      name: 'task-no-auto-pr',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-        auto_pr: false,
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.autoPr).toBe(false);
-  });
-
-  it('should fall back to global config autoPr when task YAML does not specify', async () => {
-    // Given: Task without auto_pr, global config has autoPr
-    mockLoadGlobalConfig.mockReturnValue({
-      language: 'en',
-      defaultPiece: 'default',
-      logLevel: 'info',
-      autoPr: true,
-    });
-
-    const task: TaskInfo = {
-      name: 'task-no-auto-pr-setting',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.autoPr).toBe(true);
-  });
-
-  it('should return false autoPr when neither task nor config specifies', async () => {
-    // Given: Neither task nor config has autoPr
-    mockLoadGlobalConfig.mockReturnValue({
-      language: 'en',
-      defaultPiece: 'default',
-      logLevel: 'info',
-    });
-
-    const task: TaskInfo = {
-      name: 'task-default',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.autoPr).toBe(false);
-  });
-
-  it('should prioritize task YAML auto_pr over global config', async () => {
-    // Given: Task has auto_pr: false, global config has autoPr: true
-    mockLoadGlobalConfig.mockReturnValue({
-      language: 'en',
-      defaultPiece: 'default',
-      logLevel: 'info',
-      autoPr: true,
-    });
-
-    const task: TaskInfo = {
-      name: 'task-override',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-        auto_pr: false,
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.autoPr).toBe(false);
-  });
-
-  it('should capture baseBranch from getCurrentBranch when worktree is used', async () => {
-    // Given: Task with worktree, on 'develop' branch
-    mockGetCurrentBranch.mockReturnValue('develop');
-    const task: TaskInfo = {
-      name: 'task-on-develop',
-      content: 'Task on develop branch',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task on develop branch',
-        worktree: true,
-      },
-    };
-
-    mockSummarizeTaskName.mockResolvedValue('task-develop');
-    mockCreateSharedClone.mockReturnValue({
-      path: '/project/../task-develop',
-      branch: 'takt/task-develop',
-    });
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(mockGetCurrentBranch).toHaveBeenCalledWith('/project');
-    expect(result.baseBranch).toBe('develop');
-  });
-
-  it('should not set baseBranch when worktree is not used', async () => {
-    // Given: Task without worktree
-    const task: TaskInfo = {
-      name: 'task-no-worktree',
-      content: 'Task without worktree',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task without worktree',
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(mockGetCurrentBranch).not.toHaveBeenCalled();
-    expect(result.baseBranch).toBeUndefined();
-  });
-
-  it('should return issueNumber from task data when specified', async () => {
-    // Given: Task with issue number
-    const task: TaskInfo = {
-      name: 'task-with-issue',
-      content: 'Fix authentication bug',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Fix authentication bug',
-        issue: 131,
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.issueNumber).toBe(131);
-  });
-
-  it('should return undefined issueNumber when task data has no issue', async () => {
-    // Given: Task without issue
-    const task: TaskInfo = {
-      name: 'task-no-issue',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-      },
-    };
-
-    // When
-    const result = await resolveTaskExecution(task, '/project', 'default');
-
-    // Then
-    expect(result.issueNumber).toBeUndefined();
-  });
-
-  it('should not start clone creation when abortSignal is already aborted', async () => {
-    // Given: Worktree task with pre-aborted signal
-    const task: TaskInfo = {
-      name: 'aborted-before-clone',
-      content: 'Task content',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-        worktree: true,
-      },
-    };
-    const controller = new AbortController();
-    controller.abort();
-
-    // When / Then
-    await expect(resolveTaskExecution(task, '/project', 'default', controller.signal)).rejects.toThrow('Task execution aborted');
-    expect(mockSummarizeTaskName).not.toHaveBeenCalled();
-    expect(mockCreateSharedClone).not.toHaveBeenCalled();
-  });
-
-  it('should stage task_dir spec into run context and return reportDirName', async () => {
-    const tmpRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'takt-taskdir-normal-'));
-    const projectDir = path.join(tmpRoot, 'project');
-    fs.mkdirSync(path.join(projectDir, '.takt', 'tasks', '20260201-015714-foptng'), { recursive: true });
-    const sourceOrder = path.join(projectDir, '.takt', 'tasks', '20260201-015714-foptng', 'order.md');
-    fs.writeFileSync(sourceOrder, '# normal task spec\n', 'utf-8');
-
-    const task: TaskInfo = {
-      name: 'task-with-dir',
-      content: 'Task content',
-      taskDir: '.takt/tasks/20260201-015714-foptng',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-      },
-    };
-
-    const result = await resolveTaskExecution(task, projectDir, 'default');
-
-    expect(result.reportDirName).toBe('20260201-015714-foptng');
-    expect(result.execCwd).toBe(projectDir);
-    const stagedOrder = path.join(projectDir, '.takt', 'runs', '20260201-015714-foptng', 'context', 'task', 'order.md');
-    expect(fs.existsSync(stagedOrder)).toBe(true);
-    expect(fs.readFileSync(stagedOrder, 'utf-8')).toContain('normal task spec');
-    expect(result.taskPrompt).toContain('Primary spec: `.takt/runs/20260201-015714-foptng/context/task/order.md`.');
-    expect(result.taskPrompt).not.toContain(projectDir);
-  });
-
-  it('should throw when taskDir format is invalid', async () => {
-    const task: TaskInfo = {
-      name: 'task-with-invalid-dir',
-      content: 'Task content',
-      taskDir: '.takt/reports/20260201-015714-foptng',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-      },
-    };
-
-    await expect(resolveTaskExecution(task, '/project', 'default')).rejects.toThrow(
-      'Invalid task_dir format: .takt/reports/20260201-015714-foptng',
-    );
-  });
-
-  it('should throw when taskDir contains parent directory segment', async () => {
-    const task: TaskInfo = {
-      name: 'task-with-parent-dir',
-      content: 'Task content',
-      taskDir: '.takt/tasks/..',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-      },
-    };
-
-    await expect(resolveTaskExecution(task, '/project', 'default')).rejects.toThrow(
-      'Invalid task_dir format: .takt/tasks/..',
-    );
-  });
-
-  it('should stage task_dir spec into worktree run context and return run-scoped task prompt', async () => {
-    const tmpRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'takt-taskdir-'));
-    const projectDir = path.join(tmpRoot, 'project');
-    const cloneDir = path.join(tmpRoot, 'clone');
-    fs.mkdirSync(path.join(projectDir, '.takt', 'tasks', '20260201-015714-foptng'), { recursive: true });
-    fs.mkdirSync(cloneDir, { recursive: true });
-    const sourceOrder = path.join(projectDir, '.takt', 'tasks', '20260201-015714-foptng', 'order.md');
-    fs.writeFileSync(sourceOrder, '# webhook task\n', 'utf-8');
-
-    const task: TaskInfo = {
-      name: 'task-with-taskdir-worktree',
-      content: 'Task content',
-      taskDir: '.takt/tasks/20260201-015714-foptng',
-      filePath: '/tasks/task.yaml',
-      data: {
-        task: 'Task content',
-        worktree: true,
-      },
-    };
-
-    mockSummarizeTaskName.mockResolvedValue('webhook-task');
-    mockCreateSharedClone.mockReturnValue({
-      path: cloneDir,
-      branch: 'takt/webhook-task',
-    });
-
-    const result = await resolveTaskExecution(task, projectDir, 'default');
-
-    const stagedOrder = path.join(cloneDir, '.takt', 'runs', '20260201-015714-foptng', 'context', 'task', 'order.md');
-    expect(fs.existsSync(stagedOrder)).toBe(true);
-    expect(fs.readFileSync(stagedOrder, 'utf-8')).toContain('webhook task');
-
-    expect(result.taskPrompt).toContain('Implement using only the files in `.takt/runs/20260201-015714-foptng/context/task`.');
-    expect(result.taskPrompt).toContain('Primary spec: `.takt/runs/20260201-015714-foptng/context/task/order.md`.');
-    expect(result.taskPrompt).not.toContain(projectDir);
   });
 });

src/__tests__/workerPool.test.ts

@@ -45,11 +45,17 @@ const mockInfo = vi.mocked(info);
 
 const TEST_POLL_INTERVAL_MS = 50;
 
-function createTask(name: string): TaskInfo {
+function createTask(name: string, options?: { issue?: number }): TaskInfo {
   return {
     name,
     content: `Task: ${name}`,
     filePath: `/tasks/${name}.yaml`,
+    createdAt: '2026-01-01T00:00:00.000Z',
+    status: 'pending',
+    data: {
+      task: `Task: ${name}`,
+      ...(options?.issue !== undefined ? { issue: options.issue } : {}),
+    },
   };
 }
 
@@ -135,10 +141,41 @@ describe('runWithWorkerPool', () => {
     // Then
     expect(mockExecuteAndCompleteTask).toHaveBeenCalledTimes(1);
     const parallelOpts = mockExecuteAndCompleteTask.mock.calls[0]?.[5];
-    expect(parallelOpts).toEqual({
+    expect(parallelOpts).toMatchObject({
       abortSignal: expect.any(AbortSignal),
       taskPrefix: 'my-task',
       taskColorIndex: 0,
+      taskDisplayLabel: undefined,
+    });
+  });
+
+  it('should use full issue number as taskPrefix label when task has issue in parallel execution', async () => {
+    // Given: task with 5-digit issue number should not be truncated
+    const issueNumber = 12345;
+    const tasks = [createTask('issue-task', { issue: issueNumber })];
+    const runner = createMockTaskRunner([]);
+    const stdoutChunks: string[] = [];
+    const writeSpy = vi.spyOn(process.stdout, 'write').mockImplementation((chunk: unknown) => {
+      stdoutChunks.push(String(chunk));
+      return true;
+    });
+
+    // When
+    await runWithWorkerPool(runner as never, tasks, 2, '/cwd', 'default', undefined, TEST_POLL_INTERVAL_MS);
+
+    // Then: Issue label is used instead of truncated task name
+    writeSpy.mockRestore();
+    const allOutput = stdoutChunks.join('');
+    expect(allOutput).toContain('[#12345]');
+    expect(allOutput).not.toContain('[#123]');
+
+    expect(mockExecuteAndCompleteTask).toHaveBeenCalledTimes(1);
+    const parallelOpts = mockExecuteAndCompleteTask.mock.calls[0]?.[5];
+    expect(parallelOpts).toEqual({
+      abortSignal: expect.any(AbortSignal),
+      taskPrefix: `#${issueNumber}`,
+      taskDisplayLabel: `#${issueNumber}`,
+      taskColorIndex: 0,
     });
   });
 
@@ -153,10 +190,11 @@ describe('runWithWorkerPool', () => {
     // Then
     expect(mockExecuteAndCompleteTask).toHaveBeenCalledTimes(1);
     const parallelOpts = mockExecuteAndCompleteTask.mock.calls[0]?.[5];
-    expect(parallelOpts).toEqual({
+    expect(parallelOpts).toMatchObject({
       abortSignal: expect.any(AbortSignal),
       taskPrefix: undefined,
       taskColorIndex: undefined,
+      taskDisplayLabel: undefined,
     });
   });
 

src/features/tasks/execute/parallelExecution.ts

@@ -205,9 +205,17 @@ function fillSlots(
     const task = queue.shift()!;
     const isParallel = concurrency > 1;
     const colorIndex = colorCounter.value++;
+    const issueNumber = task.data?.issue;
+    const taskPrefix = issueNumber === undefined ? task.name : `#${issueNumber}`;
+    const taskDisplayLabel = issueNumber === undefined ? undefined : taskPrefix;
 
     if (isParallel) {
-      const writer = new TaskPrefixWriter({ taskName: task.name, colorIndex });
+      const writer = new TaskPrefixWriter({
+        taskName: task.name,
+        colorIndex,
+        issue: issueNumber,
+        displayLabel: taskDisplayLabel,
+      });
       writer.writeLine(`=== Task: ${task.name} ===`);
     } else {
       blankLine();
@@ -216,8 +224,9 @@ function fillSlots(
 
     const promise = executeAndCompleteTask(task, taskRunner, cwd, pieceName, options, {
       abortSignal: abortController.signal,
-      taskPrefix: isParallel ? task.name : undefined,
+      taskPrefix: isParallel ? taskPrefix : undefined,
       taskColorIndex: isParallel ? colorIndex : undefined,
+      taskDisplayLabel: isParallel ? taskDisplayLabel : undefined,
     });
     active.set(promise, task);
   }

src/features/tasks/execute/pieceExecution.ts

@@ -232,7 +232,11 @@ export async function executePiece(
 
   // When taskPrefix is set (parallel execution), route all output through TaskPrefixWriter
   const prefixWriter = options.taskPrefix != null
-    ? new TaskPrefixWriter({ taskName: options.taskPrefix, colorIndex: options.taskColorIndex! })
+    ? new TaskPrefixWriter({
+      taskName: options.taskPrefix,
+      colorIndex: options.taskColorIndex!,
+      displayLabel: options.taskDisplayLabel,
+    })
     : undefined;
   const out = createOutputFns(prefixWriter);
 

src/features/tasks/execute/taskExecution.ts

@@ -51,7 +51,22 @@ function resolveTaskIssue(issueNumber: number | undefined): ReturnType<typeof fe
 }
 
 async function executeTaskWithResult(options: ExecuteTaskOptions): Promise<PieceExecutionResult> {
-  const { task, cwd, pieceIdentifier, projectCwd, agentOverrides, interactiveUserInput, interactiveMetadata, startMovement, retryNote, reportDirName, abortSignal, taskPrefix, taskColorIndex } = options;
+  const {
+    task,
+    cwd,
+    pieceIdentifier,
+    projectCwd,
+    agentOverrides,
+    interactiveUserInput,
+    interactiveMetadata,
+    startMovement,
+    retryNote,
+    reportDirName,
+    abortSignal,
+    taskPrefix,
+    taskColorIndex,
+    taskDisplayLabel,
+  } = options;
   const pieceConfig = loadPieceByIdentifier(pieceIdentifier, projectCwd);
 
   if (!pieceConfig) {
@@ -91,6 +106,7 @@ async function executeTaskWithResult(options: ExecuteTaskOptions): Promise<Piece
     abortSignal,
     taskPrefix,
     taskColorIndex,
+    taskDisplayLabel,
   });
   }
 
@@ -116,7 +132,7 @@ export async function executeAndCompleteTask(
   cwd: string,
   pieceName: string,
   options?: TaskExecutionOptions,
-  parallelOptions?: { abortSignal?: AbortSignal; taskPrefix?: string; taskColorIndex?: number },
+  parallelOptions?: { abortSignal?: AbortSignal; taskPrefix?: string; taskColorIndex?: number; taskDisplayLabel?: string },
 ): Promise<boolean> {
   const startedAt = new Date().toISOString();
   const taskAbortController = new AbortController();
@@ -164,6 +180,7 @@ export async function executeAndCompleteTask(
       abortSignal: taskAbortSignal,
       taskPrefix: parallelOptions?.taskPrefix,
       taskColorIndex: parallelOptions?.taskColorIndex,
+      taskDisplayLabel: parallelOptions?.taskDisplayLabel,
     });
 
     const taskSuccess = taskRunResult.success;

src/features/tasks/execute/types.ts

@@ -57,6 +57,8 @@ export interface PieceExecutionOptions {
   abortSignal?: AbortSignal;
   /** Task name prefix for parallel execution output (e.g. "[task-name] output...") */
   taskPrefix?: string;
+  /** Optional full task label used instead of taskName truncation when prefixed output is rendered */
+  taskDisplayLabel?: string;
   /** Color index for task prefix (cycled mod 4 across concurrent tasks) */
   taskColorIndex?: number;
 }
@@ -91,6 +93,8 @@ export interface ExecuteTaskOptions {
   abortSignal?: AbortSignal;
   /** Task name prefix for parallel execution output (e.g. "[task-name] output...") */
   taskPrefix?: string;
+  /** Optional full task label used instead of taskName truncation when prefixed output is rendered */
+  taskDisplayLabel?: string;
   /** Color index for task prefix (cycled mod 4 across concurrent tasks) */
   taskColorIndex?: number;
 }

src/shared/ui/TaskPrefixWriter.ts

@@ -21,6 +21,10 @@ const RESET = '\x1b[0m';
 export interface TaskPrefixWriterOptions {
   /** Task name used in the prefix */
   taskName: string;
+  /** Optional pre-computed label used in the prefix (overrides taskName truncation). */
+  displayLabel?: string;
+  /** Optional issue number used in the prefix (overrides taskName and display label). */
+  issue?: number;
   /** Color index for the prefix (cycled mod 4) */
   colorIndex: number;
   /** Override process.stdout.write for testing */
@@ -49,7 +53,8 @@ export class TaskPrefixWriter {
 
   constructor(options: TaskPrefixWriterOptions) {
     const color = TASK_COLORS[options.colorIndex % TASK_COLORS.length];
-    const taskLabel = options.taskName.slice(0, 4);
+    const issueLabel = options.issue == null ? undefined : `#${options.issue}`;
+    const taskLabel = issueLabel ?? options.displayLabel ?? options.taskName.slice(0, 4);
     this.taskPrefix = `${color}[${taskLabel}]${RESET}`;
     this.writeFn = options.writeFn ?? ((text: string) => process.stdout.write(text));
   }