[#426] add-pr-review-task (#427)

* takt: add-pr-review-task

* fix: add コマンドの DRY 違反を修正

if/else で addTask を引数の有無のみ変えて呼び分けていた
冗長な分岐を三項演算子で統一。テストのアサーションも更新。

* fix: レビュー Warning 4件を修正

- addTask.test.ts: 冗長な Ref エイリアスを削除し直接参照に統一
- addTask.test.ts: mockRejectedValue を mockImplementation(throw) に変更
  （fetchPrReviewComments は同期メソッドのため）
- index.ts: addTask の JSDoc Flow コメントを復元（PR フロー追加）
- issueTask.ts: extractTitle / createIssueFromTask の JSDoc を移植

src/__tests__/addTask.test.ts

@@ -4,6 +4,9 @@ import * as path from 'node:path';
 import { tmpdir } from 'node:os';
 import { parse as parseYaml } from 'yaml';
 
+const mockCheckCliStatus = vi.fn();
+const mockFetchPrReviewComments = vi.fn();
+
 vi.mock('../features/interactive/index.js', () => ({
   interactiveMode: vi.fn(),
 }));
@@ -42,13 +45,14 @@ vi.mock('../infra/task/index.js', async (importOriginal) => ({
 vi.mock('../infra/git/index.js', () => ({
   getGitProvider: () => ({
     createIssue: vi.fn(),
+    checkCliStatus: (...args: unknown[]) => mockCheckCliStatus(...args),
+    fetchPrReviewComments: (...args: unknown[]) => mockFetchPrReviewComments(...args),
   }),
 }));
 
-vi.mock('../infra/github/issue.js', () => ({
-  isIssueReference: vi.fn((s: string) => /^#\d+$/.test(s)),
-  resolveIssueTask: vi.fn(),
-  parseIssueNumbers: vi.fn((args: string[]) => {
+const mockIsIssueReference = vi.fn((s: string) => /^#\d+$/.test(s));
+const mockResolveIssueTask = vi.fn();
+const mockParseIssueNumbers = vi.fn((args: string[]) => {
   const numbers: number[] = [];
   for (const arg of args) {
     const match = arg.match(/^#(\d+)$/);
@@ -57,22 +61,29 @@ vi.mock('../infra/github/issue.js', () => ({
     }
   }
   return numbers;
-  }),
+});
+const mockFormatPrReviewAsTask = vi.fn();
+
+vi.mock('../infra/github/index.js', () => ({
+  isIssueReference: (...args: unknown[]) => mockIsIssueReference(...args),
+  resolveIssueTask: (...args: unknown[]) => mockResolveIssueTask(...args),
+  parseIssueNumbers: (...args: unknown[]) => mockParseIssueNumbers(...args),
+  formatPrReviewAsTask: (...args: unknown[]) => mockFormatPrReviewAsTask(...args),
 }));
 
 import { interactiveMode } from '../features/interactive/index.js';
 import { promptInput, confirm } from '../shared/prompt/index.js';
-import { info } from '../shared/ui/index.js';
+import { error, info } from '../shared/ui/index.js';
 import { determinePiece } from '../features/tasks/execute/selectAndExecute.js';
-import { resolveIssueTask } from '../infra/github/issue.js';
 import { addTask } from '../features/tasks/index.js';
+import type { PrReviewData } from '../infra/git/index.js';
 
 const mockInteractiveMode = vi.mocked(interactiveMode);
 const mockPromptInput = vi.mocked(promptInput);
 const mockConfirm = vi.mocked(confirm);
 const mockInfo = vi.mocked(info);
+const mockError = vi.mocked(error);
 const mockDeterminePiece = vi.mocked(determinePiece);
-const mockResolveIssueTask = vi.mocked(resolveIssueTask);
 
 let testDir: string;
 
@@ -81,11 +92,30 @@ function loadTasks(dir: string): { tasks: Array<Record<string, unknown>> } {
   return parseYaml(raw) as { tasks: Array<Record<string, unknown>> };
 }
 
+function addTaskWithPrOption(cwd: string, task: string, prNumber: number): Promise<void> {
+  return addTask(cwd, task, { prNumber });
+}
+
+function createMockPrReview(overrides: Partial<PrReviewData> = {}): PrReviewData {
+  return {
+    number: 456,
+    title: 'Fix auth bug',
+    body: 'PR description',
+    url: 'https://github.com/org/repo/pull/456',
+    headRefName: 'feature/fix-auth-bug',
+    comments: [{ author: 'commenter', body: 'Please update tests' }],
+    reviews: [{ author: 'reviewer', body: 'Fix null check' }],
+    files: ['src/auth.ts'],
+    ...overrides,
+  };
+}
+
 beforeEach(() => {
   vi.clearAllMocks();
   testDir = fs.mkdtempSync(path.join(tmpdir(), 'takt-test-'));
   mockDeterminePiece.mockResolvedValue('default');
   mockConfirm.mockResolvedValue(false);
+  mockCheckCliStatus.mockReturnValue({ available: true });
 });
 
 afterEach(() => {
@@ -145,12 +175,105 @@ describe('addTask', () => {
     await addTask(testDir, '#99');
 
     expect(mockInteractiveMode).not.toHaveBeenCalled();
+    expect(mockIsIssueReference).toHaveBeenCalledWith('#99');
+    expect(mockParseIssueNumbers).toHaveBeenCalledWith(['#99']);
+    expect(mockResolveIssueTask).toHaveBeenCalledWith('#99');
+    expect(mockCheckCliStatus).not.toHaveBeenCalled();
     const task = loadTasks(testDir).tasks[0]!;
     expect(task.content).toBeUndefined();
     expect(readOrderContent(testDir, task.task_dir)).toContain('Fix login timeout');
     expect(task.issue).toBe(99);
   });
 
+  it('should create task from PR review comments with PR-specific task settings', async () => {
+    const prReview = createMockPrReview();
+    const formattedTask = '## PR #456 Review Comments: Fix auth bug';
+    mockFetchPrReviewComments.mockReturnValue(prReview);
+    mockFormatPrReviewAsTask.mockReturnValue(formattedTask);
+
+    await addTaskWithPrOption(testDir, 'placeholder', 456);
+
+    expect(mockCheckCliStatus).toHaveBeenCalled();
+    expect(mockCheckCliStatus.mock.invocationCallOrder[0]).toBeLessThan(
+      mockFetchPrReviewComments.mock.invocationCallOrder[0],
+    );
+    expect(mockFetchPrReviewComments).toHaveBeenCalledWith(456);
+    expect(mockFormatPrReviewAsTask).toHaveBeenCalledWith(prReview);
+    expect(mockIsIssueReference).not.toHaveBeenCalled();
+    expect(mockParseIssueNumbers).not.toHaveBeenCalled();
+    expect(mockResolveIssueTask).not.toHaveBeenCalled();
+    expect(mockPromptInput).not.toHaveBeenCalled();
+    expect(mockConfirm).not.toHaveBeenCalled();
+    expect(mockDeterminePiece).toHaveBeenCalledTimes(1);
+    const task = loadTasks(testDir).tasks[0]!;
+    expect(task.content).toBeUndefined();
+    expect(task.branch).toBe('feature/fix-auth-bug');
+    expect(task.auto_pr).toBe(false);
+    expect(task.worktree).toBe(true);
+    expect(task.draft_pr).toBeUndefined();
+    expect(readOrderContent(testDir, task.task_dir)).toContain(formattedTask);
+  });
+
+  it('should not create a PR task when PR has no review comments', async () => {
+    const prReview = createMockPrReview({ comments: [], reviews: [] });
+    mockFetchPrReviewComments.mockReturnValue(prReview);
+
+    await addTaskWithPrOption(testDir, 'placeholder', 456);
+
+    expect(mockCheckCliStatus).toHaveBeenCalled();
+    expect(mockFetchPrReviewComments).toHaveBeenCalledWith(456);
+    expect(mockFormatPrReviewAsTask).not.toHaveBeenCalled();
+    expect(mockDeterminePiece).not.toHaveBeenCalled();
+    expect(mockError).toHaveBeenCalled();
+    expect(fs.existsSync(path.join(testDir, '.takt', 'tasks.yaml'))).toBe(false);
+  });
+
+  it('should show error and not create task when fetchPrReviewComments throws', async () => {
+    mockFetchPrReviewComments.mockImplementation(() => { throw new Error('network timeout'); });
+
+    await addTaskWithPrOption(testDir, 'placeholder', 456);
+
+    expect(mockCheckCliStatus).toHaveBeenCalled();
+    expect(mockFetchPrReviewComments).toHaveBeenCalledWith(456);
+    expect(mockFormatPrReviewAsTask).not.toHaveBeenCalled();
+    expect(mockDeterminePiece).not.toHaveBeenCalled();
+    expect(mockError).toHaveBeenCalledWith(expect.stringContaining('network timeout'));
+    expect(fs.existsSync(path.join(testDir, '.takt', 'tasks.yaml'))).toBe(false);
+  });
+
+  it('should not create a PR task when CLI is unavailable', async () => {
+    mockCheckCliStatus.mockReturnValue({ available: false, error: 'gh CLI is not available' });
+
+    await addTaskWithPrOption(testDir, 'placeholder', 456);
+
+    expect(mockFetchPrReviewComments).not.toHaveBeenCalled();
+    expect(mockFormatPrReviewAsTask).not.toHaveBeenCalled();
+    expect(mockDeterminePiece).not.toHaveBeenCalled();
+    expect(mockError).toHaveBeenCalled();
+    expect(fs.existsSync(path.join(testDir, '.takt', 'tasks.yaml'))).toBe(false);
+  });
+
+  it('should not perform issue parsing when PR task text looks like issue reference', async () => {
+    const prReview = createMockPrReview();
+    const formattedTask = '## PR #456 Review Comments: Fix auth bug';
+    mockFetchPrReviewComments.mockReturnValue(prReview);
+    mockFormatPrReviewAsTask.mockReturnValue(formattedTask);
+
+    await addTaskWithPrOption(testDir, '#99', 456);
+
+    expect(mockIsIssueReference).not.toHaveBeenCalled();
+
+    expect(mockParseIssueNumbers).not.toHaveBeenCalled();
+    expect(mockResolveIssueTask).not.toHaveBeenCalled();
+    expect(mockCheckCliStatus).toHaveBeenCalled();
+    expect(mockFetchPrReviewComments).toHaveBeenCalledWith(456);
+    expect(mockFormatPrReviewAsTask).toHaveBeenCalledWith(prReview);
+    const task = loadTasks(testDir).tasks[0]!;
+    expect(task.content).toBeUndefined();
+    expect(task.branch).toBe('feature/fix-auth-bug');
+    expect(task.auto_pr).toBe(false);
+  });
+
   it('should not create task when piece selection is cancelled', async () => {
     mockDeterminePiece.mockResolvedValue(null);
 
@@ -158,4 +281,20 @@ describe('addTask', () => {
 
     expect(fs.existsSync(path.join(testDir, '.takt', 'tasks.yaml'))).toBe(false);
   });
+
+  it('should not save PR task when piece selection is cancelled', async () => {
+    const prReview = createMockPrReview();
+    const formattedTask = '## PR #456 Review Comments: Fix auth bug';
+    mockDeterminePiece.mockResolvedValue(null);
+    mockFetchPrReviewComments.mockReturnValue(prReview);
+    mockFormatPrReviewAsTask.mockReturnValue(formattedTask);
+
+    await addTaskWithPrOption(testDir, 'placeholder', 456);
+
+    expect(mockCheckCliStatus).toHaveBeenCalled();
+    expect(mockFetchPrReviewComments).toHaveBeenCalledWith(456);
+    expect(mockFormatPrReviewAsTask).toHaveBeenCalledWith(prReview);
+    expect(mockDeterminePiece).toHaveBeenCalledTimes(1);
+    expect(fs.existsSync(path.join(testDir, '.takt', 'tasks.yaml'))).toBe(false);
+  });
 });

src/__tests__/commands-add.test.ts

@@ -0,0 +1,144 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+
+const mockOpts: Record<string, unknown> = {};
+const mockAddTask = vi.fn();
+
+const { rootCommand, commandActions } = vi.hoisted(() => {
+  const commandActions = new Map<string, (...args: unknown[]) => void>();
+
+  function createCommandMock(actionKey: string): {
+    description: ReturnType<typeof vi.fn>;
+    argument: ReturnType<typeof vi.fn>;
+    option: ReturnType<typeof vi.fn>;
+    opts: ReturnType<typeof vi.fn>;
+    action: (action: (...args: unknown[]) => void) => unknown;
+    command: ReturnType<typeof vi.fn>;
+  } {
+    const command: Record<string, unknown> = {
+      description: vi.fn().mockReturnThis(),
+      argument: vi.fn().mockReturnThis(),
+      option: vi.fn().mockReturnThis(),
+      opts: vi.fn(() => mockOpts),
+    };
+
+    command.command = vi.fn((subName: string) => createCommandMock(`${actionKey}.${subName}`));
+    command.action = vi.fn((action: (...args: unknown[]) => void) => {
+      commandActions.set(actionKey, action);
+      return command;
+    });
+
+    return command as {
+      description: ReturnType<typeof vi.fn>;
+      argument: ReturnType<typeof vi.fn>;
+      option: ReturnType<typeof vi.fn>;
+      opts: ReturnType<typeof vi.fn>;
+      action: (action: (...args: unknown[]) => void) => unknown;
+      command: ReturnType<typeof vi.fn>;
+    };
+  }
+
+  return {
+    rootCommand: createCommandMock('root'),
+    commandActions,
+  };
+});
+
+vi.mock('../app/cli/program.js', () => ({
+  program: rootCommand,
+  resolvedCwd: '/test/cwd',
+  pipelineMode: false,
+}));
+
+vi.mock('../infra/config/index.js', () => ({
+  resolveConfigValue: vi.fn(),
+}));
+
+vi.mock('../infra/config/paths.js', () => ({
+  getGlobalConfigDir: vi.fn(() => '/tmp/takt'),
+}));
+
+vi.mock('../shared/ui/index.js', () => ({
+  success: vi.fn(),
+  info: vi.fn(),
+}));
+
+vi.mock('../features/tasks/index.js', () => ({
+  runAllTasks: vi.fn(),
+  addTask: (...args: unknown[]) => mockAddTask(...args),
+  watchTasks: vi.fn(),
+  listTasks: vi.fn(),
+}));
+
+vi.mock('../features/config/index.js', () => ({
+  clearPersonaSessions: vi.fn(),
+  switchPiece: vi.fn(),
+  ejectBuiltin: vi.fn(),
+  ejectFacet: vi.fn(),
+  parseFacetType: vi.fn(),
+  VALID_FACET_TYPES: ['personas', 'policies', 'knowledge', 'instructions', 'output-contracts'],
+  resetCategoriesToDefault: vi.fn(),
+  resetConfigToDefault: vi.fn(),
+  deploySkill: vi.fn(),
+}));
+
+vi.mock('../features/prompt/index.js', () => ({
+  previewPrompts: vi.fn(),
+}));
+
+vi.mock('../features/catalog/index.js', () => ({
+  showCatalog: vi.fn(),
+}));
+
+vi.mock('../features/analytics/index.js', () => ({
+  computeReviewMetrics: vi.fn(),
+  formatReviewMetrics: vi.fn(),
+  parseSinceDuration: vi.fn(),
+  purgeOldEvents: vi.fn(),
+}));
+
+vi.mock('../commands/repertoire/add.js', () => ({
+  repertoireAddCommand: vi.fn(),
+}));
+
+vi.mock('../commands/repertoire/remove.js', () => ({
+  repertoireRemoveCommand: vi.fn(),
+}));
+
+vi.mock('../commands/repertoire/list.js', () => ({
+  repertoireListCommand: vi.fn(),
+}));
+
+import '../app/cli/commands.js';
+
+describe('CLI add command', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    for (const key of Object.keys(mockOpts)) {
+      delete mockOpts[key];
+    }
+  });
+
+  describe('when --pr option is provided', () => {
+    it('should pass program.opts().pr to addTask as prNumber', async () => {
+      const prNumber = 374;
+      mockOpts.pr = prNumber;
+
+      const addAction = commandActions.get('root.add');
+      expect(addAction).toBeTypeOf('function');
+
+      await addAction?.();
+      expect(mockAddTask).toHaveBeenCalledWith('/test/cwd', undefined, { prNumber });
+    });
+  });
+
+  describe('when --pr option is omitted', () => {
+    it('should keep existing addTask call signature', async () => {
+      const addAction = commandActions.get('root.add');
+      expect(addAction).toBeTypeOf('function');
+
+      await addAction?.('Regular task');
+
+      expect(mockAddTask).toHaveBeenCalledWith('/test/cwd', 'Regular task', undefined);
+    });
+  });
+});

src/app/cli/commands.ts

@@ -39,7 +39,8 @@ program
   .description('Add a new task')
   .argument('[task]', 'Task description or GitHub issue reference (e.g. "#28")')
   .action(async (task?: string) => {
-    await addTask(resolvedCwd, task);
+    const opts = program.opts();
+    await addTask(resolvedCwd, task, opts.pr !== undefined ? { prNumber: opts.pr as number } : undefined);
   });
 
 program

src/features/tasks/add/index.ts

@@ -13,9 +13,11 @@ import type { Language } from '../../../core/models/types.js';
 import { TaskRunner, type TaskFileData, summarizeTaskName } from '../../../infra/task/index.js';
 import { determinePiece } from '../execute/selectAndExecute.js';
 import { createLogger, getErrorMessage, generateReportDir } from '../../../shared/utils/index.js';
-import { isIssueReference, resolveIssueTask, parseIssueNumbers } from '../../../infra/github/index.js';
-import { getGitProvider } from '../../../infra/git/index.js';
+import { isIssueReference, resolveIssueTask, parseIssueNumbers, formatPrReviewAsTask } from '../../../infra/github/index.js';
+import { getGitProvider, type PrReviewData } from '../../../infra/git/index.js';
 import { firstLine } from '../../../infra/task/naming.js';
+import { extractTitle, createIssueFromTask } from './issueTask.js';
+export { extractTitle, createIssueFromTask };
 
 const log = createLogger('add-task');
 
@@ -70,60 +72,6 @@ export async function saveTaskFile(
   return { taskName: created.name, tasksFile };
 }
 
-const TITLE_MAX_LENGTH = 100;
-const TITLE_TRUNCATE_LENGTH = 97;
-const MARKDOWN_HEADING_PATTERN = /^#{1,3}\s+\S/;
-
-/**
- * Extract a clean title from a task description.
- *
- * Prefers the first Markdown heading (h1-h3) if present.
- * Falls back to the first non-empty line otherwise.
- * Truncates to 100 characters (97 + "...") when exceeded.
- */
-export function extractTitle(task: string): string {
-  const lines = task.split('\n');
-  const headingLine = lines.find((l) => MARKDOWN_HEADING_PATTERN.test(l));
-  const titleLine = headingLine
-    ? headingLine.replace(/^#{1,3}\s+/, '')
-    : (lines.find((l) => l.trim().length > 0) ?? task);
-  return titleLine.length > TITLE_MAX_LENGTH
-    ? `${titleLine.slice(0, TITLE_TRUNCATE_LENGTH)}...`
-    : titleLine;
-}
-
-/**
- * Create a GitHub Issue from a task description.
- *
- * Extracts the first Markdown heading (h1-h3) as the issue title,
- * falling back to the first non-empty line. Truncates to 100 chars.
- * Uses the full task as the body, and displays success/error messages.
- */
-export function createIssueFromTask(task: string, options?: { labels?: string[] }): number | undefined {
-  info('Creating GitHub Issue...');
-  const title = extractTitle(task);
-  const effectiveLabels = options?.labels?.filter((l) => l.length > 0) ?? [];
-  const labels = effectiveLabels.length > 0 ? effectiveLabels : undefined;
-
-  const issueResult = getGitProvider().createIssue({ title, body: task, labels });
-  if (issueResult.success) {
-    if (!issueResult.url) {
-      error('Failed to extract issue number from URL');
-      return undefined;
-    }
-    success(`Issue created: ${issueResult.url}`);
-    const num = Number(issueResult.url.split('/').pop());
-    if (Number.isNaN(num)) {
-      error('Failed to extract issue number from URL');
-      return undefined;
-    }
-    return num;
-  } else {
-    error(`Failed to create issue: ${issueResult.error}`);
-    return undefined;
-  }
-}
-
 interface WorktreeSettings {
   worktree?: boolean | string;
   branch?: string;
@@ -153,27 +101,6 @@ function displayTaskCreationResult(
   if (piece) info(`  Piece: ${piece}`);
 }
 
-/**
- * Create a GitHub Issue and save the task to .takt/tasks.yaml.
- *
- * Combines issue creation and task saving into a single workflow.
- * If issue creation fails, no task is saved.
- */
-export async function createIssueAndSaveTask(
-  cwd: string,
-  task: string,
-  piece?: string,
-  options?: { confirmAtEndMessage?: string; labels?: string[] },
-): Promise<void> {
-  const issueNumber = createIssueFromTask(task, { labels: options?.labels });
-  if (issueNumber !== undefined) {
-    await saveTaskFromInteractive(cwd, task, piece, {
-      issue: issueNumber,
-      confirmAtEndMessage: options?.confirmAtEndMessage,
-    });
-  }
-}
-
 /**
  * Prompt user to select a label for the GitHub Issue.
  *
@@ -233,17 +160,83 @@ export async function saveTaskFromInteractive(
   displayTaskCreationResult(created, settings, piece);
 }
 
+export async function createIssueAndSaveTask(
+  cwd: string,
+  task: string,
+  piece?: string,
+  options?: { confirmAtEndMessage?: string; labels?: string[] },
+): Promise<void> {
+  const issueNumber = createIssueFromTask(task, { labels: options?.labels });
+  if (issueNumber === undefined) {
+    return;
+  }
+  await saveTaskFromInteractive(cwd, task, piece, {
+    issue: issueNumber,
+    confirmAtEndMessage: options?.confirmAtEndMessage,
+  });
+}
+
 /**
  * add command handler
  *
  * Flow:
- *   A) 引数なし: Usage表示して終了
- *   B) Issue参照の場合: issue取得 → ピース選択 → ワークツリー設定 → YAML作成
- *   C) 通常入力: 引数をそのまま保存
+ *   A) --pr オプション: PRレビュー取得 → ピース選択 → YAML作成
+ *   B) 引数なし: Usage表示して終了
+ *   C) Issue参照の場合: issue取得 → ピース選択 → ワークツリー設定 → YAML作成
+ *   D) 通常入力: ピース選択 → ワークツリー設定 → YAML作成
  */
-export async function addTask(cwd: string, task?: string): Promise<void> {
+export async function addTask(
+  cwd: string,
+  task?: string,
+  opts?: { prNumber?: number },
+): Promise<void> {
   const rawTask = task ?? '';
   const trimmedTask = rawTask.trim();
+  const prNumber = opts?.prNumber;
+
+  if (prNumber !== undefined) {
+    const provider = getGitProvider();
+    const ghStatus = provider.checkCliStatus();
+    if (!ghStatus.available) {
+      error(ghStatus.error ?? 'GitHub CLI is unavailable');
+      return;
+    }
+
+    let prReview: PrReviewData;
+    try {
+      prReview = await withProgress(
+        'Fetching PR review comments...',
+        (fetchedPrReview: PrReviewData) => `PR fetched: #${fetchedPrReview.number} ${fetchedPrReview.title}`,
+        async () => provider.fetchPrReviewComments(prNumber),
+      );
+    } catch (e) {
+      const msg = getErrorMessage(e);
+      error(`Failed to fetch PR review comments #${prNumber}: ${msg}`);
+      return;
+    }
+
+    if (prReview.reviews.length === 0 && prReview.comments.length === 0) {
+      error(`PR #${prNumber} has no review comments`);
+      return;
+    }
+
+    const taskContent = formatPrReviewAsTask(prReview);
+    const piece = await determinePiece(cwd);
+    if (piece === null) {
+      info('Cancelled.');
+      return;
+    }
+
+    const settings = {
+      worktree: true,
+      branch: prReview.headRefName,
+      autoPr: false,
+    };
+    const created = await saveTaskFile(cwd, taskContent, { piece, ...settings });
+    displayTaskCreationResult(created, settings, piece);
+    return;
+  }
+
   if (!trimmedTask) {
     info('Usage: takt add <task>');
     return;
@@ -253,7 +246,6 @@ export async function addTask(cwd: string, task?: string): Promise<void> {
   let issueNumber: number | undefined;
 
   if (isIssueReference(trimmedTask)) {
-    // Issue reference: fetch issue and use directly as task content
     try {
       const numbers = parseIssueNumbers([trimmedTask]);
       const primaryIssueNumber = numbers[0];
@@ -283,7 +275,6 @@ export async function addTask(cwd: string, task?: string): Promise<void> {
 
   const settings = await promptWorktreeSettings();
 
-  // YAMLファイル作成
   const created = await saveTaskFile(cwd, taskContent, {
     piece,
     issue: issueNumber,

src/features/tasks/add/issueTask.ts

@@ -0,0 +1,56 @@
+import { info, success, error } from '../../../shared/ui/index.js';
+import { getGitProvider } from '../../../infra/git/index.js';
+
+const TITLE_MAX_LENGTH = 100;
+const TITLE_TRUNCATE_LENGTH = 97;
+const MARKDOWN_HEADING_PATTERN = /^#{1,3}\s+\S/;
+
+/**
+ * Extract a clean title from a task description.
+ *
+ * Prefers the first Markdown heading (h1-h3) if present.
+ * Falls back to the first non-empty line otherwise.
+ * Truncates to 100 characters (97 + "...") when exceeded.
+ */
+export function extractTitle(task: string): string {
+  const lines = task.split('\n');
+  const headingLine = lines.find((l) => MARKDOWN_HEADING_PATTERN.test(l));
+  const titleLine = headingLine
+    ? headingLine.replace(/^#{1,3}\s+/, '')
+    : (lines.find((l) => l.trim().length > 0) ?? task);
+  return titleLine.length > TITLE_MAX_LENGTH
+    ? `${titleLine.slice(0, TITLE_TRUNCATE_LENGTH)}...`
+    : titleLine;
+}
+
+/**
+ * Create a GitHub Issue from a task description.
+ *
+ * Extracts the first Markdown heading (h1-h3) as the issue title,
+ * falling back to the first non-empty line. Truncates to 100 chars.
+ * Uses the full task as the body, and displays success/error messages.
+ */
+export function createIssueFromTask(task: string, options?: { labels?: string[] }): number | undefined {
+  info('Creating GitHub Issue...');
+  const title = extractTitle(task);
+  const effectiveLabels = options?.labels?.filter((l) => l.length > 0) ?? [];
+  const labels = effectiveLabels.length > 0 ? effectiveLabels : undefined;
+
+  const issueResult = getGitProvider().createIssue({ title, body: task, labels });
+  if (issueResult.success) {
+    if (!issueResult.url) {
+      error('Failed to extract issue number from URL');
+      return undefined;
+    }
+    success(`Issue created: ${issueResult.url}`);
+    const num = Number(issueResult.url.split('/').pop());
+    if (Number.isNaN(num)) {
+      error('Failed to extract issue number from URL');
+      return undefined;
+    }
+    return num;
+  } else {
+    error(`Failed to create issue: ${issueResult.error}`);
+    return undefined;
+  }
+}