github-issue-237-fix-ctrl-c-provider-graceful-timeout-force (#253)

* dist-tag 検証をリトライ付きに変更（npm レジストリの結果整合性対策）

* takt run 実行時に蓋閉じスリープを抑制

* takt: github-issue-237-fix-ctrl-c-provider-graceful-timeout-force

e2e/specs/run-sigint-graceful.e2e.ts

@@ -171,4 +171,85 @@ describe('E2E: Run tasks graceful shutdown on SIGINT (parallel)', () => {
       expect(stderr).not.toContain('UnhandledPromiseRejection');
     }
   }, 120_000);
+
+  it('should force exit immediately on second SIGINT', async () => {
+    const binPath = resolve(__dirname, '../../bin/takt');
+    const piecePath = resolve(__dirname, '../fixtures/pieces/mock-slow-multi-step.yaml');
+    const scenarioPath = resolve(__dirname, '../fixtures/scenarios/run-sigint-parallel.json');
+
+    const tasksFile = join(testRepo.path, '.takt', 'tasks.yaml');
+    mkdirSync(join(testRepo.path, '.takt'), { recursive: true });
+
+    const now = new Date().toISOString();
+    writeFileSync(
+      tasksFile,
+      [
+        'tasks:',
+        '  - name: sigint-a',
+        '    status: pending',
+        '    content: "E2E SIGINT task A"',
+        `    piece: "${piecePath}"`,
+        '    worktree: true',
+        `    created_at: "${now}"`,
+        '    started_at: null',
+        '    completed_at: null',
+        '    owner_pid: null',
+        '  - name: sigint-b',
+        '    status: pending',
+        '    content: "E2E SIGINT task B"',
+        `    piece: "${piecePath}"`,
+        '    worktree: true',
+        `    created_at: "${now}"`,
+        '    started_at: null',
+        '    completed_at: null',
+        '    owner_pid: null',
+        '  - name: sigint-c',
+        '    status: pending',
+        '    content: "E2E SIGINT task C"',
+        `    piece: "${piecePath}"`,
+        '    worktree: true',
+        `    created_at: "${now}"`,
+        '    started_at: null',
+        '    completed_at: null',
+        '    owner_pid: null',
+      ].join('\n'),
+      'utf-8',
+    );
+
+    const child = spawn('node', [binPath, 'run', '--provider', 'mock'], {
+      cwd: testRepo.path,
+      env: {
+        ...isolatedEnv.env,
+        TAKT_MOCK_SCENARIO: scenarioPath,
+        TAKT_E2E_SELF_SIGINT_TWICE: '1',
+      },
+      stdio: ['ignore', 'pipe', 'pipe'],
+    });
+
+    let stdout = '';
+    let stderr = '';
+    child.stdout?.on('data', (chunk) => {
+      stdout += chunk.toString();
+    });
+    child.stderr?.on('data', (chunk) => {
+      stderr += chunk.toString();
+    });
+
+    const workersFilled = await waitFor(
+      () => stdout.includes('=== Task: sigint-b ==='),
+      30_000,
+      20,
+    );
+    expect(workersFilled, `stdout:\n${stdout}\n\nstderr:\n${stderr}`).toBe(true);
+
+    const exit = await waitForClose(child, 60_000);
+    expect(
+      exit.signal === 'SIGINT' || exit.code === 130,
+      `unexpected exit: code=${exit.code}, signal=${exit.signal}`,
+    ).toBe(true);
+
+    if (stderr.trim().length > 0) {
+      expect(stderr).not.toContain('UnhandledPromiseRejection');
+    }
+  }, 120_000);
 });

src/__tests__/claude-executor-abort-signal.test.ts

@@ -0,0 +1,89 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+const {
+  queryMock,
+  interruptMock,
+  AbortErrorMock,
+} = vi.hoisted(() => {
+  const interruptMock = vi.fn(async () => {});
+  class AbortErrorMock extends Error {}
+  const queryMock = vi.fn(() => {
+    let interrupted = false;
+    interruptMock.mockImplementation(async () => {
+      interrupted = true;
+    });
+
+    return {
+      interrupt: interruptMock,
+      async *[Symbol.asyncIterator](): AsyncGenerator<never, void, unknown> {
+        while (!interrupted) {
+          await new Promise((resolve) => setTimeout(resolve, 5));
+        }
+        throw new AbortErrorMock('aborted');
+      },
+    };
+  });
+
+  return {
+    queryMock,
+    interruptMock,
+    AbortErrorMock,
+  };
+});
+
+vi.mock('@anthropic-ai/claude-agent-sdk', () => ({
+  query: queryMock,
+  AbortError: AbortErrorMock,
+}));
+
+vi.mock('../shared/utils/index.js', async (importOriginal) => {
+  const original = await importOriginal<typeof import('../shared/utils/index.js')>();
+  return {
+    ...original,
+    createLogger: vi.fn().mockReturnValue({
+      debug: vi.fn(),
+      info: vi.fn(),
+      error: vi.fn(),
+    }),
+  };
+});
+
+import { QueryExecutor } from '../infra/claude/executor.js';
+
+describe('QueryExecutor abortSignal wiring', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('abortSignal 発火時に query.interrupt() を呼ぶ', async () => {
+    const controller = new AbortController();
+    const executor = new QueryExecutor();
+
+    const promise = executor.execute('test', {
+      cwd: '/tmp/project',
+      abortSignal: controller.signal,
+    });
+
+    await new Promise((resolve) => setTimeout(resolve, 20));
+    controller.abort();
+
+    const result = await promise;
+
+    expect(interruptMock).toHaveBeenCalledTimes(1);
+    expect(result.interrupted).toBe(true);
+  });
+
+  it('開始前に中断済みの signal でも query.interrupt() を呼ぶ', async () => {
+    const controller = new AbortController();
+    controller.abort();
+
+    const executor = new QueryExecutor();
+    const result = await executor.execute('test', {
+      cwd: '/tmp/project',
+      abortSignal: controller.signal,
+    });
+
+    expect(interruptMock).toHaveBeenCalledTimes(1);
+    expect(result.interrupted).toBe(true);
+  });
+});

src/__tests__/claude-provider-abort-signal.test.ts

@@ -0,0 +1,52 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import type { AgentSetup } from '../infra/providers/types.js';
+
+const {
+  mockCallClaude,
+  mockResolveAnthropicApiKey,
+} = vi.hoisted(() => ({
+  mockCallClaude: vi.fn(),
+  mockResolveAnthropicApiKey: vi.fn(),
+}));
+
+vi.mock('../infra/claude/index.js', () => ({
+  callClaude: mockCallClaude,
+  callClaudeCustom: vi.fn(),
+  callClaudeAgent: vi.fn(),
+  callClaudeSkill: vi.fn(),
+}));
+
+vi.mock('../infra/config/index.js', () => ({
+  resolveAnthropicApiKey: mockResolveAnthropicApiKey,
+}));
+
+import { ClaudeProvider } from '../infra/providers/claude.js';
+
+describe('ClaudeProvider abortSignal wiring', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    mockResolveAnthropicApiKey.mockReturnValue(undefined);
+    mockCallClaude.mockResolvedValue({
+      persona: 'coder',
+      status: 'done',
+      content: 'ok',
+      timestamp: new Date(),
+    });
+  });
+
+  it('ProviderCallOptions.abortSignal を Claude call options に渡す', async () => {
+    const provider = new ClaudeProvider();
+    const setup: AgentSetup = { name: 'coder' };
+    const agent = provider.setup(setup);
+    const controller = new AbortController();
+
+    await agent.call('test prompt', {
+      cwd: '/tmp/project',
+      abortSignal: controller.signal,
+    });
+
+    expect(mockCallClaude).toHaveBeenCalledTimes(1);
+    const callOptions = mockCallClaude.mock.calls[0]?.[2];
+    expect(callOptions).toHaveProperty('abortSignal', controller.signal);
+  });
+});

src/__tests__/i18n.test.ts

@@ -114,6 +114,7 @@ describe('label integrity', () => {
     expect(() => getLabel('piece.notifyComplete')).not.toThrow();
     expect(() => getLabel('piece.notifyAbort')).not.toThrow();
     expect(() => getLabel('piece.sigintGraceful')).not.toThrow();
+    expect(() => getLabel('piece.sigintTimeout')).not.toThrow();
     expect(() => getLabel('piece.sigintForce')).not.toThrow();
   });
 

src/__tests__/shutdownManager.test.ts

@@ -0,0 +1,173 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+const {
+  mockWarn,
+  mockError,
+  mockBlankLine,
+  mockGetLabel,
+} = vi.hoisted(() => ({
+  mockWarn: vi.fn(),
+  mockError: vi.fn(),
+  mockBlankLine: vi.fn(),
+  mockGetLabel: vi.fn((key: string) => key),
+}));
+
+vi.mock('../shared/ui/index.js', () => ({
+  warn: mockWarn,
+  error: mockError,
+  blankLine: mockBlankLine,
+}));
+
+vi.mock('../shared/i18n/index.js', () => ({
+  getLabel: mockGetLabel,
+}));
+
+import { ShutdownManager } from '../features/tasks/execute/shutdownManager.js';
+
+describe('ShutdownManager', () => {
+  let savedSigintListeners: ((...args: unknown[]) => void)[];
+  let originalShutdownTimeoutEnv: string | undefined;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    savedSigintListeners = process.rawListeners('SIGINT') as ((...args: unknown[]) => void)[];
+    originalShutdownTimeoutEnv = process.env.TAKT_SHUTDOWN_TIMEOUT_MS;
+    delete process.env.TAKT_SHUTDOWN_TIMEOUT_MS;
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    process.removeAllListeners('SIGINT');
+    for (const listener of savedSigintListeners) {
+      process.on('SIGINT', listener as NodeJS.SignalsListener);
+    }
+    if (originalShutdownTimeoutEnv === undefined) {
+      delete process.env.TAKT_SHUTDOWN_TIMEOUT_MS;
+    } else {
+      process.env.TAKT_SHUTDOWN_TIMEOUT_MS = originalShutdownTimeoutEnv;
+    }
+  });
+
+  it('1回目SIGINTでgracefulコールバックを呼ぶ', () => {
+    const onGraceful = vi.fn();
+    const onForceKill = vi.fn();
+
+    const manager = new ShutdownManager({
+      callbacks: { onGraceful, onForceKill },
+      gracefulTimeoutMs: 1_000,
+    });
+    manager.install();
+
+    const listeners = process.rawListeners('SIGINT') as Array<() => void>;
+    listeners[listeners.length - 1]!();
+
+    expect(onGraceful).toHaveBeenCalledTimes(1);
+    expect(onForceKill).not.toHaveBeenCalled();
+    expect(mockWarn).toHaveBeenCalledWith('piece.sigintGraceful');
+
+    manager.cleanup();
+  });
+
+  it('graceful timeoutでforceコールバックを呼ぶ', () => {
+    vi.useFakeTimers();
+    const onGraceful = vi.fn();
+    const onForceKill = vi.fn();
+
+    const manager = new ShutdownManager({
+      callbacks: { onGraceful, onForceKill },
+      gracefulTimeoutMs: 50,
+    });
+    manager.install();
+
+    const listeners = process.rawListeners('SIGINT') as Array<() => void>;
+    listeners[listeners.length - 1]!();
+    vi.advanceTimersByTime(50);
+
+    expect(onGraceful).toHaveBeenCalledTimes(1);
+    expect(onForceKill).toHaveBeenCalledTimes(1);
+    expect(mockError).toHaveBeenCalledWith('piece.sigintTimeout');
+    expect(mockError).toHaveBeenCalledWith('piece.sigintForce');
+
+    manager.cleanup();
+  });
+
+  it('2回目SIGINTで即時forceコールバックを呼び、timeoutを待たない', () => {
+    vi.useFakeTimers();
+    const onGraceful = vi.fn();
+    const onForceKill = vi.fn();
+
+    const manager = new ShutdownManager({
+      callbacks: { onGraceful, onForceKill },
+      gracefulTimeoutMs: 10_000,
+    });
+    manager.install();
+
+    const listeners = process.rawListeners('SIGINT') as Array<() => void>;
+    const handler = listeners[listeners.length - 1]!;
+    handler();
+    handler();
+    vi.advanceTimersByTime(10_000);
+
+    expect(onGraceful).toHaveBeenCalledTimes(1);
+    expect(onForceKill).toHaveBeenCalledTimes(1);
+    expect(mockError).toHaveBeenCalledWith('piece.sigintForce');
+
+    manager.cleanup();
+  });
+
+  it('環境変数未設定時はデフォルト10_000msを使う', () => {
+    vi.useFakeTimers();
+    const onGraceful = vi.fn();
+    const onForceKill = vi.fn();
+
+    const manager = new ShutdownManager({
+      callbacks: { onGraceful, onForceKill },
+    });
+    manager.install();
+
+    const listeners = process.rawListeners('SIGINT') as Array<() => void>;
+    listeners[listeners.length - 1]!();
+
+    vi.advanceTimersByTime(9_999);
+    expect(onForceKill).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(1);
+    expect(onForceKill).toHaveBeenCalledTimes(1);
+
+    manager.cleanup();
+  });
+
+  it('環境変数設定時はその値をtimeoutとして使う', () => {
+    vi.useFakeTimers();
+    process.env.TAKT_SHUTDOWN_TIMEOUT_MS = '25';
+    const onGraceful = vi.fn();
+    const onForceKill = vi.fn();
+
+    const manager = new ShutdownManager({
+      callbacks: { onGraceful, onForceKill },
+    });
+    manager.install();
+
+    const listeners = process.rawListeners('SIGINT') as Array<() => void>;
+    listeners[listeners.length - 1]!();
+
+    vi.advanceTimersByTime(24);
+    expect(onForceKill).not.toHaveBeenCalled();
+
+    vi.advanceTimersByTime(1);
+    expect(onForceKill).toHaveBeenCalledTimes(1);
+
+    manager.cleanup();
+  });
+
+  it('不正な環境変数値ではエラーをthrowする', () => {
+    process.env.TAKT_SHUTDOWN_TIMEOUT_MS = '0';
+
+    expect(
+      () =>
+        new ShutdownManager({
+          callbacks: { onGraceful: vi.fn(), onForceKill: vi.fn() },
+        }),
+    ).toThrowError('TAKT_SHUTDOWN_TIMEOUT_MS must be a positive integer');
+  });
+});

src/__tests__/watchTasks.test.ts

@@ -12,6 +12,8 @@ const {
   mockBlankLine,
   mockStatus,
   mockSuccess,
+  mockWarn,
+  mockError,
   mockGetCurrentPiece,
 } = vi.hoisted(() => ({
   mockRecoverInterruptedRunningTasks: vi.fn(),
@@ -24,6 +26,8 @@ const {
   mockBlankLine: vi.fn(),
   mockStatus: vi.fn(),
   mockSuccess: vi.fn(),
+  mockWarn: vi.fn(),
+  mockError: vi.fn(),
   mockGetCurrentPiece: vi.fn(),
 }));
 
@@ -45,11 +49,17 @@ vi.mock('../features/tasks/execute/taskExecution.js', () => ({
 vi.mock('../shared/ui/index.js', () => ({
   header: mockHeader,
   info: mockInfo,
+  warn: mockWarn,
+  error: mockError,
   success: mockSuccess,
   status: mockStatus,
   blankLine: mockBlankLine,
 }));
 
+vi.mock('../shared/i18n/index.js', () => ({
+  getLabel: vi.fn((key: string) => key),
+}));
+
 vi.mock('../infra/config/index.js', () => ({
   getCurrentPiece: mockGetCurrentPiece,
 }));

src/features/tasks/execute/parallelExecution.ts

@@ -14,9 +14,10 @@
 import type { TaskRunner, TaskInfo } from '../../../infra/task/index.js';
 import { info, blankLine } from '../../../shared/ui/index.js';
 import { TaskPrefixWriter } from '../../../shared/ui/TaskPrefixWriter.js';
+import { EXIT_SIGINT } from '../../../shared/exitCodes.js';
 import { createLogger } from '../../../shared/utils/index.js';
 import { executeAndCompleteTask } from './taskExecution.js';
-import { installSigIntHandler } from './sigintHandler.js';
+import { ShutdownManager } from './shutdownManager.js';
 import type { TaskExecutionOptions } from './types.js';
 
 const log = createLogger('worker-pool');
@@ -96,8 +97,15 @@ export async function runWithWorkerPool(
   pollIntervalMs: number,
 ): Promise<WorkerPoolResult> {
   const abortController = new AbortController();
-  const { cleanup } = installSigIntHandler(() => abortController.abort());
+  const shutdownManager = new ShutdownManager({
+    callbacks: {
+      onGraceful: () => abortController.abort(),
+      onForceKill: () => process.exit(EXIT_SIGINT),
+    },
+  });
+  shutdownManager.install();
   const selfSigintOnce = process.env.TAKT_E2E_SELF_SIGINT_ONCE === '1';
+  const selfSigintTwice = process.env.TAKT_E2E_SELF_SIGINT_TWICE === '1';
   let selfSigintInjected = false;
 
   let successCount = 0;
@@ -111,9 +119,12 @@ export async function runWithWorkerPool(
     while (queue.length > 0 || active.size > 0) {
       if (!abortController.signal.aborted) {
         fillSlots(queue, active, concurrency, taskRunner, cwd, pieceName, options, abortController, colorCounter);
-        if (selfSigintOnce && !selfSigintInjected && active.size > 0) {
+        if ((selfSigintOnce || selfSigintTwice) && !selfSigintInjected && active.size > 0) {
           selfSigintInjected = true;
           process.emit('SIGINT');
+          if (selfSigintTwice) {
+            process.emit('SIGINT');
+          }
         }
       }
 
@@ -169,7 +180,7 @@ export async function runWithWorkerPool(
       }
     }
   } finally {
-    cleanup();
+    shutdownManager.cleanup();
   }
 
   return { success: successCount, fail: failCount };

src/features/tasks/execute/pieceExecution.ts

@@ -65,7 +65,8 @@ import {
 } from '../../../shared/utils/providerEventLogger.js';
 import { selectOption, promptInput } from '../../../shared/prompt/index.js';
 import { getLabel } from '../../../shared/i18n/index.js';
-import { installSigIntHandler } from './sigintHandler.js';
+import { EXIT_SIGINT } from '../../../shared/exitCodes.js';
+import { ShutdownManager } from './shutdownManager.js';
 import { buildRunPaths } from '../../../core/piece/run/run-paths.js';
 import { resolveMovementProviderModel } from '../../../core/piece/provider-resolution.js';
 import { writeFileAtomic, ensureDir } from '../../../infra/config/index.js';
@@ -407,7 +408,7 @@ export async function executePiece(
   const movementIterations = new Map<string, number>();
   let engine: PieceEngine | null = null;
   let onAbortSignal: (() => void) | undefined;
-  let sigintCleanup: (() => void) | undefined;
+  let shutdownManager: ShutdownManager | undefined;
   let onEpipe: ((err: NodeJS.ErrnoException) => void) | undefined;
   const runAbortController = new AbortController();
 
@@ -730,8 +731,13 @@ export async function executePiece(
         options.abortSignal!.addEventListener('abort', onAbortSignal, { once: true });
       }
     } else {
-      const handler = installSigIntHandler(abortEngine);
-      sigintCleanup = handler.cleanup;
+      shutdownManager = new ShutdownManager({
+        callbacks: {
+          onGraceful: abortEngine,
+          onForceKill: () => process.exit(EXIT_SIGINT),
+        },
+      });
+      shutdownManager.install();
     }
 
     const finalState = await engine.run();
@@ -749,7 +755,7 @@ export async function executePiece(
     throw error;
   } finally {
     prefixWriter?.flush();
-    sigintCleanup?.();
+    shutdownManager?.cleanup();
     if (onAbortSignal && options.abortSignal) {
       options.abortSignal.removeEventListener('abort', onAbortSignal);
     }

src/features/tasks/execute/shutdownManager.ts

@@ -0,0 +1,108 @@
+import { blankLine, warn, error } from '../../../shared/ui/index.js';
+import { getLabel } from '../../../shared/i18n/index.js';
+
+export interface ShutdownCallbacks {
+  onGraceful: () => void;
+  onForceKill: () => void;
+}
+
+export interface ShutdownManagerOptions {
+  callbacks: ShutdownCallbacks;
+  gracefulTimeoutMs?: number;
+}
+
+type ShutdownState = 'idle' | 'graceful' | 'forcing';
+
+const DEFAULT_SHUTDOWN_TIMEOUT_MS = 10_000;
+
+function parseTimeoutMs(raw: string | undefined): number | undefined {
+  if (!raw) {
+    return undefined;
+  }
+
+  const value = Number.parseInt(raw, 10);
+  if (!Number.isFinite(value) || value <= 0) {
+    throw new Error('TAKT_SHUTDOWN_TIMEOUT_MS must be a positive integer');
+  }
+
+  return value;
+}
+
+function resolveShutdownTimeoutMs(): number {
+  return parseTimeoutMs(process.env.TAKT_SHUTDOWN_TIMEOUT_MS) ?? DEFAULT_SHUTDOWN_TIMEOUT_MS;
+}
+
+export class ShutdownManager {
+  private readonly callbacks: ShutdownCallbacks;
+  private readonly gracefulTimeoutMs: number;
+  private state: ShutdownState = 'idle';
+  private timeoutId: ReturnType<typeof setTimeout> | undefined;
+  private readonly sigintHandler: () => void;
+
+  constructor(options: ShutdownManagerOptions) {
+    this.callbacks = options.callbacks;
+    this.gracefulTimeoutMs = options.gracefulTimeoutMs ?? resolveShutdownTimeoutMs();
+    this.sigintHandler = () => this.handleSigint();
+  }
+
+  install(): void {
+    process.on('SIGINT', this.sigintHandler);
+  }
+
+  cleanup(): void {
+    process.removeListener('SIGINT', this.sigintHandler);
+    this.clearTimeout();
+  }
+
+  private handleSigint(): void {
+    if (this.state === 'idle') {
+      this.beginGracefulShutdown();
+      return;
+    }
+
+    if (this.state === 'graceful') {
+      this.forceShutdown();
+    }
+  }
+
+  private beginGracefulShutdown(): void {
+    this.state = 'graceful';
+
+    blankLine();
+    warn(getLabel('piece.sigintGraceful'));
+    this.callbacks.onGraceful();
+
+    this.timeoutId = setTimeout(() => {
+      this.timeoutId = undefined;
+      if (this.state !== 'graceful') {
+        return;
+      }
+
+      blankLine();
+      error(getLabel('piece.sigintTimeout', undefined, {
+        timeoutMs: String(this.gracefulTimeoutMs),
+      }));
+      this.forceShutdown();
+    }, this.gracefulTimeoutMs);
+  }
+
+  private forceShutdown(): void {
+    if (this.state === 'forcing') {
+      return;
+    }
+
+    this.state = 'forcing';
+    this.clearTimeout();
+
+    blankLine();
+    error(getLabel('piece.sigintForce'));
+    this.callbacks.onForceKill();
+  }
+
+  private clearTimeout(): void {
+    if (this.timeoutId !== undefined) {
+      clearTimeout(this.timeoutId);
+      this.timeoutId = undefined;
+    }
+  }
+}

src/features/tasks/execute/sigintHandler.ts

@@ -1,32 +0,0 @@
-/**
- * Shared SIGINT handler for graceful/force shutdown pattern.
- *
- * 1st Ctrl+C = graceful abort via onAbort callback
- * 2nd Ctrl+C = force exit
- */
-
-import { blankLine, warn, error } from '../../../shared/ui/index.js';
-import { EXIT_SIGINT } from '../../../shared/exitCodes.js';
-import { getLabel } from '../../../shared/i18n/index.js';
-
-interface SigIntHandler {
-  cleanup: () => void;
-}
-
-export function installSigIntHandler(onAbort: () => void): SigIntHandler {
-  let sigintCount = 0;
-  const handler = () => {
-    sigintCount++;
-    if (sigintCount === 1) {
-      blankLine();
-      warn(getLabel('piece.sigintGraceful'));
-      onAbort();
-    } else {
-      blankLine();
-      error(getLabel('piece.sigintForce'));
-      process.exit(EXIT_SIGINT);
-    }
-  };
-  process.on('SIGINT', handler);
-  return { cleanup: () => process.removeListener('SIGINT', handler) };
-}

src/features/tasks/watch/index.ts

@@ -16,6 +16,8 @@ import {
 } from '../../../shared/ui/index.js';
 import { executeAndCompleteTask } from '../execute/taskExecution.js';
 import { DEFAULT_PIECE_NAME } from '../../../shared/constants.js';
+import { EXIT_SIGINT } from '../../../shared/exitCodes.js';
+import { ShutdownManager } from '../execute/shutdownManager.js';
 import type { TaskExecutionOptions } from '../execute/types.js';
 
 /**
@@ -41,13 +43,20 @@ export async function watchTasks(cwd: string, options?: TaskExecutionOptions): P
   info('Waiting for tasks... (Ctrl+C to stop)');
   blankLine();
 
-  // Graceful shutdown on SIGINT
-  const onSigInt = () => {
+  const shutdownManager = new ShutdownManager({
+    callbacks: {
+      onGraceful: () => {
         blankLine();
         info('Stopping watch...');
         watcher.stop();
-  };
-  process.on('SIGINT', onSigInt);
+      },
+      onForceKill: () => {
+        watcher.stop();
+        process.exit(EXIT_SIGINT);
+      },
+    },
+  });
+  shutdownManager.install();
 
   try {
     await watcher.watch(async (task: TaskInfo) => {
@@ -68,7 +77,7 @@ export async function watchTasks(cwd: string, options?: TaskExecutionOptions): P
       info('Waiting for tasks... (Ctrl+C to stop)');
     });
   } finally {
-    process.removeListener('SIGINT', onSigInt);
+    shutdownManager.cleanup();
   }
 
   // Summary on exit

src/infra/claude/client.ts

@@ -38,6 +38,7 @@ export class ClaudeClient {
   private static toSpawnOptions(options: ClaudeCallOptions): ClaudeSpawnOptions {
     return {
       cwd: options.cwd,
+      abortSignal: options.abortSignal,
       sessionId: options.sessionId,
       allowedTools: options.allowedTools,
       mcpServers: options.mcpServers,
@@ -125,6 +126,7 @@ export class ClaudeClient {
     const fullPrompt = `/${skillName}\n\n${prompt}`;
     const spawnOptions: ClaudeSpawnOptions = {
       cwd: options.cwd,
+      abortSignal: options.abortSignal,
       sessionId: options.sessionId,
       allowedTools: options.allowedTools,
       mcpServers: options.mcpServers,
@@ -192,4 +194,3 @@ export async function callClaudeSkill(
 ): Promise<AgentResponse> {
   return defaultClient.callSkill(skillName, prompt, options);
 }
-

src/infra/claude/executor.ts

@@ -94,10 +94,27 @@ export class QueryExecutor {
     let resultContent: string | undefined;
     let hasResultMessage = false;
     let accumulatedAssistantText = '';
+    let onExternalAbort: (() => void) | undefined;
 
     try {
       const q = query({ prompt, options: sdkOptions });
       registerQuery(queryId, q);
+      if (options.abortSignal) {
+        const interruptQuery = () => {
+          void q.interrupt().catch((interruptError: unknown) => {
+            log.debug('Failed to interrupt Claude query', {
+              queryId,
+              error: getErrorMessage(interruptError),
+            });
+          });
+        };
+        if (options.abortSignal.aborted) {
+          interruptQuery();
+        } else {
+          onExternalAbort = interruptQuery;
+          options.abortSignal.addEventListener('abort', onExternalAbort, { once: true });
+        }
+      }
 
       for await (const message of q) {
         if ('session_id' in message) {
@@ -133,6 +150,9 @@ export class QueryExecutor {
       }
 
       unregisterQuery(queryId);
+      if (onExternalAbort && options.abortSignal) {
+        options.abortSignal.removeEventListener('abort', onExternalAbort);
+      }
 
       const finalContent = resultContent || accumulatedAssistantText;
 
@@ -151,6 +171,9 @@ export class QueryExecutor {
         fullContent: accumulatedAssistantText.trim(),
       };
     } catch (error) {
+      if (onExternalAbort && options.abortSignal) {
+        options.abortSignal.removeEventListener('abort', onExternalAbort);
+      }
       unregisterQuery(queryId);
       return QueryExecutor.handleQueryError(error, queryId, sessionId, hasResultMessage, success, resultContent, stderrChunks);
     }

src/infra/claude/types.ts

@@ -119,6 +119,7 @@ export interface ClaudeResultWithQueryId extends ClaudeResult {
 /** Options for calling Claude (high-level, used by client/providers/agents) */
 export interface ClaudeCallOptions {
   cwd: string;
+  abortSignal?: AbortSignal;
   sessionId?: string;
   allowedTools?: string[];
   /** MCP servers configuration */
@@ -145,6 +146,7 @@ export interface ClaudeCallOptions {
 /** Options for spawning a Claude SDK query (low-level, used by executor/process) */
 export interface ClaudeSpawnOptions {
   cwd: string;
+  abortSignal?: AbortSignal;
   sessionId?: string;
   allowedTools?: string[];
   /** MCP servers configuration */

src/infra/providers/claude.ts

@@ -10,6 +10,7 @@ import type { AgentSetup, Provider, ProviderAgent, ProviderCallOptions } from '.
 function toClaudeOptions(options: ProviderCallOptions): ClaudeCallOptions {
   return {
     cwd: options.cwd,
+    abortSignal: options.abortSignal,
     sessionId: options.sessionId,
     allowedTools: options.allowedTools,
     mcpServers: options.mcpServers,

src/shared/i18n/labels_en.yaml

@@ -65,6 +65,7 @@ piece:
   notifyComplete: "Piece complete ({iteration} iterations)"
   notifyAbort: "Aborted: {reason}"
   sigintGraceful: "Ctrl+C: Aborting piece..."
+  sigintTimeout: "Graceful shutdown timed out after {timeoutMs}ms"
   sigintForce: "Ctrl+C: Force exit"
 
 run:

src/shared/i18n/labels_ja.yaml

@@ -65,6 +65,7 @@ piece:
   notifyComplete: "ピース完了 ({iteration} iterations)"
   notifyAbort: "中断: {reason}"
   sigintGraceful: "Ctrl+C: ピースを中断しています..."
+  sigintTimeout: "graceful停止がタイムアウトしました ({timeoutMs}ms)"
   sigintForce: "Ctrl+C: 強制終了します"
 
 run: