セッション情報を残す、worktreeをプロジェクト管理外に移動

CLAUDE.md

@@ -19,16 +19,17 @@ TAKT (Task Agent Koordination Tool) is a multi-agent orchestration system for Cl
 
 ## CLI Slash Commands
 
-| Command | Description |
+| Command | Alias | Description |
-|---------|-------------|
+|---------|-------|-------------|
-| `takt /run-tasks` | Execute all pending tasks from `.takt/tasks/` once |
+| `takt /run-tasks` | `/run` | Execute all pending tasks from `.takt/tasks/` once |
-| `takt /watch` | Watch `.takt/tasks/` and auto-execute tasks (resident process) |
+| `takt /watch` | | Watch `.takt/tasks/` and auto-execute tasks (resident process) |
-| `takt /add-task` | Add a new task interactively (YAML format) |
+| `takt /add-task` | `/add` | Add a new task interactively (YAML format, multiline supported) |
-| `takt /switch` | Switch workflow interactively |
+| `takt /review-tasks` | `/review` | Review worktree task results (try merge, merge & cleanup, or delete) |
-| `takt /clear` | Clear agent conversation sessions (reset state) |
+| `takt /switch` | | Switch workflow interactively |
-| `takt /refresh-builtin` | Update builtin resources from `resources/` to `~/.takt/` |
+| `takt /clear` | | Clear agent conversation sessions (reset state) |
-| `takt /help` | Show help message |
+| `takt /refresh-builtin` | | Update builtin resources from `resources/` to `~/.takt/` |
-| `takt /config` | Display current configuration |
+| `takt /help` | | Show help message |
+| `takt /config` | | Display current configuration |
 
 ## Architecture
 
@@ -185,6 +186,18 @@ model: opus          # Default model for all steps (unless overridden)
 - `improve` - Needs improvement (security concerns, quality issues)
 - `always` - Unconditional transition
 
+## Worktree Execution
+
+When tasks specify `worktree: true` or `worktree: "path"`, code runs in a git worktree (separate checkout). Key constraints:
+
+- **Session isolation**: Claude Code sessions are stored per-cwd in `~/.claude/projects/{encoded-path}/`. Sessions from the main project cannot be resumed in a worktree. The engine skips session resume when `cwd !== projectCwd`.
+- **No node_modules**: Worktrees only contain tracked files. `node_modules/` is absent.
+- **Dual cwd**: `cwd` = worktree path (where agents run), `projectCwd` = project root (where `.takt/` lives). Reports, logs, and session data always write to `projectCwd`.
+
+## Error Propagation
+
+`ClaudeResult` (from SDK) has an `error` field. This must be propagated through `AgentResponse.error` → session log history → console output. Without this, SDK failures (exit code 1, rate limits, auth errors) appear as empty `blocked` status with no diagnostic info.
+
 ## Testing Notes
 
 - Vitest for testing framework

README.md

@@ -23,7 +23,7 @@ npm install -g takt
 ## Quick Start
 
 ```bash
-# Run a task (will prompt for workflow selection)
+# Run a task (will prompt for workflow selection and optional worktree creation)
 takt "Add a login feature"
 
 # Add a task to the queue
@@ -35,24 +35,28 @@ takt /run-tasks
 # Watch for tasks and auto-execute
 takt /watch
 
+# Review worktree results (merge or delete)
+takt /review-tasks
+
 # Switch workflow
 takt /switch
 ```
 
 ## Commands
 
-| Command | Description |
+| Command | Alias | Description |
-|---------|-------------|
+|---------|-------|-------------|
-| `takt "task"` | Execute task with current workflow (continues session) |
+| `takt "task"` | | Execute task with current workflow (continues session) |
-| `takt -r "task"` | Execute task, resuming previous session |
+| `takt -r "task"` | | Execute task, resuming previous session |
-| `takt /run-tasks` | Run all pending tasks from `.takt/tasks/` |
+| `takt /run-tasks` | `/run` | Run all pending tasks from `.takt/tasks/` |
-| `takt /watch` | Watch `.takt/tasks/` and auto-execute tasks (stays resident) |
+| `takt /watch` | | Watch `.takt/tasks/` and auto-execute tasks (stays resident) |
-| `takt /add-task` | Add a new task interactively (YAML format) |
+| `takt /add-task` | `/add` | Add a new task interactively (YAML format, multiline supported) |
-| `takt /switch` | Switch workflow interactively |
+| `takt /review-tasks` | `/review` | Review worktree task results (try merge, merge & cleanup, or delete) |
-| `takt /clear` | Clear agent conversation sessions |
+| `takt /switch` | | Switch workflow interactively |
-| `takt /refresh-builtin` | Update builtin agents/workflows to latest version |
+| `takt /clear` | | Clear agent conversation sessions |
-| `takt /config` | Display current configuration |
+| `takt /refresh-builtin` | | Update builtin agents/workflows to latest version |
-| `takt /help` | Show help |
+| `takt /config` | | Display current configuration |
+| `takt /help` | | Show help |
 
 ## Workflows
 
@@ -183,7 +187,10 @@ Available Codex models:
 ├── completed/           # Completed tasks with reports
 ├── worktrees/           # Git worktrees for isolated task execution
 ├── reports/             # Execution reports (auto-generated)
-└── logs/                # Session logs
+└── logs/                # Session logs (incremental)
+    ├── latest.json      # Pointer to current/latest session
+    ├── previous.json    # Pointer to previous session
+    └── {sessionId}.json # Full session log per workflow run
 ```
 
 ### Global Configuration
@@ -224,6 +231,15 @@ takt -r "The bug occurs when the password contains special characters"
 
 The `-r` flag preserves the agent's conversation history, allowing for natural back-and-forth interaction.
 
+### Interactive Workflow
+
+When running `takt "task"`, you are prompted to:
+
+1. **Select a workflow** - Choose from available workflows (arrow keys, ESC to cancel)
+2. **Create a worktree** (optional) - Optionally run the task in an isolated git worktree
+
+This interactive flow ensures each task runs with the right workflow and isolation level.
+
 ### Adding Custom Workflows
 
 Create your own workflow by adding YAML files to `~/.takt/workflows/`:
@@ -335,6 +351,8 @@ YAML task files can specify `worktree` to run each task in an isolated git workt
 - `branch: "feat/xxx"` - Use specified branch (auto-generated as `takt/{timestamp}-{slug}` if omitted)
 - Omit `worktree` - Run in current working directory (default)
 
+When a worktree task completes successfully, TAKT automatically commits all changes (`auto-commit`). Use `takt /review-tasks` to review, try-merge, or delete completed worktree branches.
+
 #### Running Tasks with `/run-tasks`
 
 ```bash
@@ -356,6 +374,27 @@ Watch mode polls `.takt/tasks/` for new task files and auto-executes them as the
 - Automated workflows where tasks are added by external processes
 - Long-running development sessions where tasks are queued over time
 
+#### Reviewing Worktree Results with `/review-tasks`
+
+```bash
+takt /review-tasks
+```
+
+Lists all `takt/`-prefixed worktree branches with file change counts. For each branch you can:
+- **Try merge** - Attempt merge into main (dry-run check, then actual merge)
+- **Merge & cleanup** - Merge and remove the worktree
+- **Delete** - Remove the worktree and branch without merging
+
+### Session Logs
+
+TAKT writes session logs incrementally to `.takt/logs/`. Logs are saved at workflow start, after each step, and at workflow end — so even if the process crashes mid-execution, partial logs are preserved.
+
+- `.takt/logs/latest.json` - Pointer to the current (or most recent) session
+- `.takt/logs/previous.json` - Pointer to the previous session
+- `.takt/logs/{sessionId}.json` - Full session log with step history
+
+Agents can read `previous.json` to pick up context from a prior run (e.g., when resuming with `takt "続けて"`).
+
 ### Workflow Variables
 
 Available variables in `instruction_template`:
@@ -401,7 +440,7 @@ transitions:
     next_step: ABORT       # End workflow with failure
 ```
 
-Available transition conditions: `done`, `blocked`, `approved`, `rejected`, `improve`, `always`.
+Available transition conditions: `done`, `blocked`, `approved`, `rejected`, `improve`, `answer`, `always`.
 Special next_step values: `COMPLETE` (success), `ABORT` (failure).
 
 **Step options:**
@@ -413,6 +452,7 @@ Special next_step values: `COMPLETE` (success), `ABORT` (failure).
 | `allowed_tools` | - | List of tools the agent can use (Read, Glob, Grep, Edit, Write, Bash, etc.) |
 | `provider` | - | Override provider for this step (`claude` or `codex`) |
 | `model` | - | Override model for this step |
+| `permission_mode` | `default` | Permission mode: `default`, `acceptEdits`, or `bypassPermissions` |
 
 ## API Usage
 

src/__tests__/session.test.ts

@@ -0,0 +1,174 @@
+/**
+ * Tests for session log incremental writes and pointer management
+ */
+
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
+import { existsSync, readFileSync, mkdirSync, rmSync, writeFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { tmpdir } from 'node:os';
+import {
+  createSessionLog,
+  saveSessionLog,
+  updateLatestPointer,
+  type LatestLogPointer,
+  type SessionLog,
+} from '../utils/session.js';
+
+/** Create a temp project directory with .takt/logs structure */
+function createTempProject(): string {
+  const dir = join(tmpdir(), `takt-test-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`);
+  mkdirSync(dir, { recursive: true });
+  return dir;
+}
+
+describe('saveSessionLog (atomic)', () => {
+  let projectDir: string;
+
+  beforeEach(() => {
+    projectDir = createTempProject();
+  });
+
+  afterEach(() => {
+    rmSync(projectDir, { recursive: true, force: true });
+  });
+
+  it('should create session log file with correct content', () => {
+    const log = createSessionLog('test task', projectDir, 'default');
+    const sessionId = 'test-session-001';
+
+    const filepath = saveSessionLog(log, sessionId, projectDir);
+
+    expect(existsSync(filepath)).toBe(true);
+    const content = JSON.parse(readFileSync(filepath, 'utf-8')) as SessionLog;
+    expect(content.task).toBe('test task');
+    expect(content.workflowName).toBe('default');
+    expect(content.status).toBe('running');
+    expect(content.iterations).toBe(0);
+    expect(content.history).toEqual([]);
+  });
+
+  it('should overwrite existing log file on subsequent saves', () => {
+    const log = createSessionLog('test task', projectDir, 'default');
+    const sessionId = 'test-session-002';
+
+    saveSessionLog(log, sessionId, projectDir);
+
+    log.iterations = 3;
+    log.status = 'completed';
+    saveSessionLog(log, sessionId, projectDir);
+
+    const filepath = join(projectDir, '.takt', 'logs', `${sessionId}.json`);
+    const content = JSON.parse(readFileSync(filepath, 'utf-8')) as SessionLog;
+    expect(content.iterations).toBe(3);
+    expect(content.status).toBe('completed');
+  });
+});
+
+describe('updateLatestPointer', () => {
+  let projectDir: string;
+
+  beforeEach(() => {
+    projectDir = createTempProject();
+  });
+
+  afterEach(() => {
+    rmSync(projectDir, { recursive: true, force: true });
+  });
+
+  it('should create latest.json with pointer data', () => {
+    const log = createSessionLog('my task', projectDir, 'default');
+    const sessionId = 'abc-123';
+
+    updateLatestPointer(log, sessionId, projectDir);
+
+    const latestPath = join(projectDir, '.takt', 'logs', 'latest.json');
+    expect(existsSync(latestPath)).toBe(true);
+
+    const pointer = JSON.parse(readFileSync(latestPath, 'utf-8')) as LatestLogPointer;
+    expect(pointer.sessionId).toBe('abc-123');
+    expect(pointer.logFile).toBe('abc-123.json');
+    expect(pointer.task).toBe('my task');
+    expect(pointer.workflowName).toBe('default');
+    expect(pointer.status).toBe('running');
+    expect(pointer.iterations).toBe(0);
+    expect(pointer.startTime).toBeDefined();
+    expect(pointer.updatedAt).toBeDefined();
+  });
+
+  it('should not create previous.json when copyToPrevious is false', () => {
+    const log = createSessionLog('task', projectDir, 'wf');
+    updateLatestPointer(log, 'sid-1', projectDir);
+
+    const previousPath = join(projectDir, '.takt', 'logs', 'previous.json');
+    expect(existsSync(previousPath)).toBe(false);
+  });
+
+  it('should not create previous.json when copyToPrevious is true but latest.json does not exist', () => {
+    const log = createSessionLog('task', projectDir, 'wf');
+    updateLatestPointer(log, 'sid-1', projectDir, { copyToPrevious: true });
+
+    const previousPath = join(projectDir, '.takt', 'logs', 'previous.json');
+    // latest.json didn't exist before this call, so previous.json should not be created
+    expect(existsSync(previousPath)).toBe(false);
+  });
+
+  it('should copy latest.json to previous.json when copyToPrevious is true and latest exists', () => {
+    const log1 = createSessionLog('first task', projectDir, 'wf1');
+    updateLatestPointer(log1, 'sid-first', projectDir);
+
+    // Simulate a second workflow starting
+    const log2 = createSessionLog('second task', projectDir, 'wf2');
+    updateLatestPointer(log2, 'sid-second', projectDir, { copyToPrevious: true });
+
+    const logsDir = join(projectDir, '.takt', 'logs');
+    const latest = JSON.parse(readFileSync(join(logsDir, 'latest.json'), 'utf-8')) as LatestLogPointer;
+    const previous = JSON.parse(readFileSync(join(logsDir, 'previous.json'), 'utf-8')) as LatestLogPointer;
+
+    // latest should point to second session
+    expect(latest.sessionId).toBe('sid-second');
+    expect(latest.task).toBe('second task');
+
+    // previous should point to first session
+    expect(previous.sessionId).toBe('sid-first');
+    expect(previous.task).toBe('first task');
+  });
+
+  it('should not update previous.json on step-complete calls (no copyToPrevious)', () => {
+    // Workflow 1 creates latest
+    const log1 = createSessionLog('first', projectDir, 'wf');
+    updateLatestPointer(log1, 'sid-1', projectDir);
+
+    // Workflow 2 starts → copies latest to previous
+    const log2 = createSessionLog('second', projectDir, 'wf');
+    updateLatestPointer(log2, 'sid-2', projectDir, { copyToPrevious: true });
+
+    // Step completes → updates only latest (no copyToPrevious)
+    log2.iterations = 1;
+    updateLatestPointer(log2, 'sid-2', projectDir);
+
+    const logsDir = join(projectDir, '.takt', 'logs');
+    const previous = JSON.parse(readFileSync(join(logsDir, 'previous.json'), 'utf-8')) as LatestLogPointer;
+
+    // previous should still point to first session
+    expect(previous.sessionId).toBe('sid-1');
+  });
+
+  it('should update iterations and status in latest.json on subsequent calls', () => {
+    const log = createSessionLog('task', projectDir, 'wf');
+    updateLatestPointer(log, 'sid-1', projectDir, { copyToPrevious: true });
+
+    // Simulate step completion
+    log.iterations = 2;
+    updateLatestPointer(log, 'sid-1', projectDir);
+
+    // Simulate workflow completion
+    log.status = 'completed';
+    log.iterations = 3;
+    updateLatestPointer(log, 'sid-1', projectDir);
+
+    const latestPath = join(projectDir, '.takt', 'logs', 'latest.json');
+    const pointer = JSON.parse(readFileSync(latestPath, 'utf-8')) as LatestLogPointer;
+    expect(pointer.status).toBe('completed');
+    expect(pointer.iterations).toBe(3);
+  });
+});

src/commands/workflowExecution.ts

@@ -21,6 +21,7 @@ import {
   addToSessionLog,
   finalizeSessionLog,
   saveSessionLog,
+  updateLatestPointer,
 } from '../utils/session.js';
 import { createLogger } from '../utils/debug.js';
 import { notifySuccess, notifyError } from '../utils/notification.js';
@@ -84,6 +85,10 @@ export async function executeWorkflow(
   const workflowSessionId = generateSessionId();
   const sessionLog = createSessionLog(task, projectCwd, workflowConfig.name);
 
+  // Persist initial log + pointer at workflow start (enables crash recovery)
+  saveSessionLog(sessionLog, workflowSessionId, projectCwd);
+  updateLatestPointer(sessionLog, workflowSessionId, projectCwd, { copyToPrevious: true });
+
   // Track current display for streaming
   const displayRef: { current: StreamDisplay | null } = { current: null };
 
@@ -191,6 +196,10 @@ export async function executeWorkflow(
       status('Session', response.sessionId);
     }
     addToSessionLog(sessionLog, step.name, response);
+
+    // Incremental save after each step
+    saveSessionLog(sessionLog, workflowSessionId, projectCwd);
+    updateLatestPointer(sessionLog, workflowSessionId, projectCwd);
   });
 
   engine.on('workflow:complete', (state) => {
@@ -198,6 +207,7 @@ export async function executeWorkflow(
     finalizeSessionLog(sessionLog, 'completed');
     // Save log to project root so user can find it easily
     const logPath = saveSessionLog(sessionLog, workflowSessionId, projectCwd);
+    updateLatestPointer(sessionLog, workflowSessionId, projectCwd);
 
     const elapsed = sessionLog.endTime
       ? formatElapsedTime(sessionLog.startTime, sessionLog.endTime)
@@ -219,6 +229,7 @@ export async function executeWorkflow(
     finalizeSessionLog(sessionLog, 'aborted');
     // Save log to project root so user can find it easily
     const logPath = saveSessionLog(sessionLog, workflowSessionId, projectCwd);
+    updateLatestPointer(sessionLog, workflowSessionId, projectCwd);
 
     const elapsed = sessionLog.endTime
       ? formatElapsedTime(sessionLog.startTime, sessionLog.endTime)

src/config/paths.ts

@@ -86,6 +86,7 @@ export {
 
 // Re-export session storage functions for backward compatibility
 export {
+  writeFileAtomic,
   getInputHistoryPath,
   MAX_INPUT_HISTORY,
   loadInputHistory,

src/config/sessionStore.ts

@@ -13,7 +13,7 @@ import { getProjectConfigDir, ensureDir } from './paths.js';
  * Write file atomically using temp file + rename.
  * This prevents corruption when multiple processes write simultaneously.
  */
-function writeFileAtomic(filePath: string, content: string): void {
+export function writeFileAtomic(filePath: string, content: string): void {
   const tempPath = `${filePath}.${process.pid}.${Date.now()}.tmp`;
   try {
     writeFileSync(tempPath, content, 'utf-8');

src/task/worktree.ts

@@ -48,18 +48,16 @@ function resolveWorktreePath(projectDir: string, options: WorktreeOptions): stri
       ? options.worktree
       : path.resolve(projectDir, options.worktree);
 
-    if (!isPathSafe(projectDir, resolved)) {
-      throw new Error(`Worktree path escapes project directory: ${options.worktree}`);
-    }
-
     return resolved;
   }
 
-  // worktree: true → .takt/worktrees/{timestamp}-{task-slug}/
+  // worktree: true → sibling directory: ../{timestamp}-{task-slug}/
+  // Worktrees MUST be outside the project directory to avoid Claude Code
+  // detecting the parent .git directory and writing to the main project.
   const timestamp = generateTimestamp();
   const slug = slugify(options.taskSlug);
   const dirName = slug ? `${timestamp}-${slug}` : timestamp;
-  return path.join(projectDir, '.takt', 'worktrees', dirName);
+  return path.join(path.dirname(projectDir), dirName);
 }
 
 /**

src/utils/session.ts

@@ -2,10 +2,10 @@
  * Session management utilities
  */
 
-import { writeFileSync, existsSync, readFileSync } from 'node:fs';
+import { existsSync, readFileSync, copyFileSync } from 'node:fs';
 import { join } from 'node:path';
 import type { AgentResponse, WorkflowState } from '../models/types.js';
-import { getProjectLogsDir, getGlobalLogsDir, ensureDir } from '../config/paths.js';
+import { getProjectLogsDir, getGlobalLogsDir, ensureDir, writeFileAtomic } from '../config/paths.js';
 
 /** Session log entry */
 export interface SessionLog {
@@ -112,7 +112,7 @@ export function saveSessionLog(
   const filename = `${sessionId}.json`;
   const filepath = join(logsDir, filename);
 
-  writeFileSync(filepath, JSON.stringify(log, null, 2), 'utf-8');
+  writeFileAtomic(filepath, JSON.stringify(log, null, 2));
   return filepath;
 }
 
@@ -144,6 +144,56 @@ export function loadProjectContext(projectDir: string): string {
   return contextParts.join('\n\n---\n\n');
 }
 
+/** Pointer metadata for latest/previous log files */
+export interface LatestLogPointer {
+  sessionId: string;
+  logFile: string;
+  task: string;
+  workflowName: string;
+  status: SessionLog['status'];
+  startTime: string;
+  updatedAt: string;
+  iterations: number;
+}
+
+/**
+ * Update latest.json pointer file.
+ * On first call (workflow start), copies existing latest.json to previous.json.
+ * On subsequent calls (step complete / workflow end), only overwrites latest.json.
+ */
+export function updateLatestPointer(
+  log: SessionLog,
+  sessionId: string,
+  projectDir?: string,
+  options?: { copyToPrevious?: boolean }
+): void {
+  const logsDir = projectDir
+    ? getProjectLogsDir(projectDir)
+    : getGlobalLogsDir();
+  ensureDir(logsDir);
+
+  const latestPath = join(logsDir, 'latest.json');
+  const previousPath = join(logsDir, 'previous.json');
+
+  // Copy latest → previous only when explicitly requested (workflow start)
+  if (options?.copyToPrevious && existsSync(latestPath)) {
+    copyFileSync(latestPath, previousPath);
+  }
+
+  const pointer: LatestLogPointer = {
+    sessionId,
+    logFile: `${sessionId}.json`,
+    task: log.task,
+    workflowName: log.workflowName,
+    status: log.status,
+    startTime: log.startTime,
+    updatedAt: new Date().toISOString(),
+    iterations: log.iterations,
+  };
+
+  writeFileAtomic(latestPath, JSON.stringify(pointer, null, 2));
+}
+
 /** Convert workflow state to session log */
 export function workflowStateToSessionLog(
   state: WorkflowState,