diff --git a/src/__tests__/naming.test.ts b/src/__tests__/naming.test.ts
index d6bedbf..7cad07b 100644
--- a/src/__tests__/naming.test.ts
+++ b/src/__tests__/naming.test.ts
@@ -1,11 +1,11 @@
 /**
  * Unit tests for task naming utilities
  *
- * Tests nowIso, firstLine, and sanitizeTaskName functions.
+ * Tests nowIso and firstLine functions.
  */
 
 import { describe, it, expect, vi, afterEach } from 'vitest';
-import { nowIso, firstLine, sanitizeTaskName } from '../infra/task/naming.js';
+import { nowIso, firstLine } from '../infra/task/naming.js';
 
 describe('nowIso', () => {
   afterEach(() => {
@@ -54,34 +54,3 @@ describe('firstLine', () => {
     expect(firstLine('   \n  ')).toBe('');
   });
 });
-
-describe('sanitizeTaskName', () => {
-  it('should lowercase the input', () => {
-    expect(sanitizeTaskName('Hello World')).toBe('hello-world');
-  });
-
-  it('should replace special characters with spaces then hyphens', () => {
-    expect(sanitizeTaskName('task@name#123')).toBe('task-name-123');
-  });
-
-  it('should collapse multiple hyphens', () => {
-    expect(sanitizeTaskName('a---b')).toBe('a-b');
-  });
-
-  it('should trim leading/trailing whitespace', () => {
-    expect(sanitizeTaskName('  hello  ')).toBe('hello');
-  });
-
-  it('should handle typical task names', () => {
-    expect(sanitizeTaskName('Fix: login bug (#42)')).toBe('fix-login-bug-42');
-  });
-
-  it('should generate fallback name for empty result', () => {
-    const result = sanitizeTaskName('!@#$%');
-    expect(result).toMatch(/^task-\d+$/);
-  });
-
-  it('should preserve numbers and lowercase letters', () => {
-    expect(sanitizeTaskName('abc123def')).toBe('abc123def');
-  });
-});
diff --git a/src/__tests__/reportDir.test.ts b/src/__tests__/reportDir.test.ts
index 1163eaf..59013fc 100644
--- a/src/__tests__/reportDir.test.ts
+++ b/src/__tests__/reportDir.test.ts
@@ -37,12 +37,13 @@ describe('generateReportDir', () => {
     vi.useRealTimers();
   });
 
-  it('should preserve Japanese characters in summary', () => {
+  it('should strip CJK characters from summary', () => {
     vi.useFakeTimers();
     vi.setSystemTime(new Date('2025-06-01T12:00:00.000Z'));
 
     const result = generateReportDir('タスク指示書の実装');
-    expect(result).toContain('タスク指示書の実装');
+    // CJK characters are removed by slugify, leaving empty → falls back to 'task'
+    expect(result).toBe('20250601-120000-task');
 
     vi.useRealTimers();
   });
@@ -53,7 +54,7 @@ describe('generateReportDir', () => {
 
     const result = generateReportDir('Fix: bug (#42)');
     const slug = result.replace(/^20250101-000000-/, '');
-    expect(slug).not.toMatch(/[^a-z0-9\u3040-\u309f\u30a0-\u30ff\u4e00-\u9faf-]/);
+    expect(slug).not.toMatch(/[^a-z0-9-]/);
 
     vi.useRealTimers();
   });
diff --git a/src/__tests__/saveTaskFile.test.ts b/src/__tests__/saveTaskFile.test.ts
index 9da02c7..f4d6459 100644
--- a/src/__tests__/saveTaskFile.test.ts
+++ b/src/__tests__/saveTaskFile.test.ts
@@ -66,6 +66,8 @@ describe('saveTaskFile', () => {
     expect(tasks).toHaveLength(1);
     expect(tasks[0]?.content).toBeUndefined();
     expect(tasks[0]?.task_dir).toBeTypeOf('string');
+    expect(tasks[0]?.slug).toBeTypeOf('string');
+    expect(tasks[0]?.summary).toBe('Implement feature X');
     const taskDir = path.join(testDir, String(tasks[0]?.task_dir));
     expect(fs.existsSync(path.join(taskDir, 'order.md'))).toBe(true);
     expect(fs.readFileSync(path.join(taskDir, 'order.md'), 'utf-8')).toContain('Implement feature X');
diff --git a/src/__tests__/slug.test.ts b/src/__tests__/slug.test.ts
index fd9ef78..8538809 100644
--- a/src/__tests__/slug.test.ts
+++ b/src/__tests__/slug.test.ts
@@ -1,7 +1,7 @@
 /**
  * Unit tests for slugify utility
  *
- * Tests URL/filename-safe slug generation with CJK support.
+ * Tests URL/filename-safe slug generation (a-z 0-9 hyphen, max 30 chars).
  */
 
 import { describe, it, expect } from 'vitest';
@@ -25,17 +25,17 @@ describe('slugify', () => {
     expect(slugify('   hello   ')).toBe('hello');
   });
 
-  it('should truncate to 50 characters', () => {
+  it('should truncate to 30 characters', () => {
     const long = 'a'.repeat(100);
-    expect(slugify(long).length).toBeLessThanOrEqual(50);
+    expect(slugify(long).length).toBeLessThanOrEqual(30);
   });
 
-  it('should preserve CJK characters', () => {
-    expect(slugify('タスク指示書')).toBe('タスク指示書');
+  it('should strip CJK characters', () => {
+    expect(slugify('タスク指示書')).toBe('');
   });
 
   it('should handle mixed ASCII and CJK', () => {
-    expect(slugify('Add タスク Feature')).toBe('add-タスク-feature');
+    expect(slugify('Add タスク Feature')).toBe('add-feature');
   });
 
   it('should handle numbers', () => {
@@ -43,11 +43,18 @@ describe('slugify', () => {
   });
 
   it('should handle empty result after stripping', () => {
-    // All special characters → becomes empty string
     expect(slugify('!@#$%')).toBe('');
   });
 
   it('should handle typical GitHub issue titles', () => {
     expect(slugify('Fix: login not working (#42)')).toBe('fix-login-not-working-42');
   });
+
+  it('should strip trailing hyphen after truncation', () => {
+    // 30 chars of slug that ends with a hyphen after slice
+    const input = 'abcdefghijklmnopqrstuvwxyz-abc-xyz';
+    const result = slugify(input);
+    expect(result.length).toBeLessThanOrEqual(30);
+    expect(result).not.toMatch(/-$/);
+  });
 });
diff --git a/src/__tests__/taskStatusLabel.test.ts b/src/__tests__/taskStatusLabel.test.ts
index 7efb53f..8e06987 100644
--- a/src/__tests__/taskStatusLabel.test.ts
+++ b/src/__tests__/taskStatusLabel.test.ts
@@ -1,39 +1,50 @@
 import { describe, expect, it } from 'vitest';
-import { formatTaskStatusLabel } from '../features/tasks/list/taskStatusLabel.js';
+import { formatTaskStatusLabel, formatShortDate } from '../features/tasks/list/taskStatusLabel.js';
 import type { TaskListItem } from '../infra/task/types.js';
 
+function makeTask(overrides: Partial<TaskListItem>): TaskListItem {
+  return {
+    kind: 'pending',
+    name: 'test-task',
+    createdAt: '2026-02-11T00:00:00.000Z',
+    filePath: '/tmp/task.md',
+    content: 'content',
+    ...overrides,
+  };
+}
+
 describe('formatTaskStatusLabel', () => {
   it("should format pending task as '[pending] name'", () => {
-    // Given: pending タスク
-    const task: TaskListItem = {
-      kind: 'pending',
-      name: 'implement test',
-      createdAt: '2026-02-11T00:00:00.000Z',
-      filePath: '/tmp/task.md',
-      content: 'content',
-    };
-
-    // When: ステータスラベルを生成する
-    const result = formatTaskStatusLabel(task);
-
-    // Then: pending は pending 表示になる
-    expect(result).toBe('[pending] implement test');
+    const task = makeTask({ kind: 'pending', name: 'implement-test' });
+    expect(formatTaskStatusLabel(task)).toBe('[pending] implement-test');
   });
 
   it("should format failed task as '[failed] name'", () => {
-    // Given: failed タスク
-    const task: TaskListItem = {
-      kind: 'failed',
-      name: 'retry payment',
-      createdAt: '2026-02-11T00:00:00.000Z',
-      filePath: '/tmp/task.md',
-      content: 'content',
-    };
+    const task = makeTask({ kind: 'failed', name: 'retry-payment' });
+    expect(formatTaskStatusLabel(task)).toBe('[failed] retry-payment');
+  });
 
-    // When: ステータスラベルを生成する
-    const result = formatTaskStatusLabel(task);
+  it('should include branch when present', () => {
+    const task = makeTask({
+      kind: 'completed',
+      name: 'fix-login-bug',
+      branch: 'takt/284/fix-login-bug',
+    });
+    expect(formatTaskStatusLabel(task)).toBe('[completed] fix-login-bug (takt/284/fix-login-bug)');
+  });
 
-    // Then: failed は failed 表示になる
-    expect(result).toBe('[failed] retry payment');
+  it('should not include branch when absent', () => {
+    const task = makeTask({ kind: 'running', name: 'my-task' });
+    expect(formatTaskStatusLabel(task)).toBe('[running] my-task');
+  });
+});
+
+describe('formatShortDate', () => {
+  it('should format ISO string to MM/DD HH:mm', () => {
+    expect(formatShortDate('2025-02-18T14:30:00.000Z')).toBe('02/18 14:30');
+  });
+
+  it('should zero-pad single digit values', () => {
+    expect(formatShortDate('2025-01-05T03:07:00.000Z')).toBe('01/05 03:07');
   });
 });
diff --git a/src/features/tasks/add/index.ts b/src/features/tasks/add/index.ts
index 79599f7..107e2de 100644
--- a/src/features/tasks/add/index.ts
+++ b/src/features/tasks/add/index.ts
@@ -8,10 +8,11 @@ import * as path from 'node:path';
 import * as fs from 'node:fs';
 import { promptInput, confirm } from '../../../shared/prompt/index.js';
 import { success, info, error, withProgress } from '../../../shared/ui/index.js';
-import { TaskRunner, type TaskFileData } from '../../../infra/task/index.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, createIssue } from '../../../infra/github/index.js';
+import { firstLine } from '../../../infra/task/naming.js';
 
 const log = createLogger('add-task');
 
@@ -39,9 +40,11 @@ export async function saveTaskFile(
   options?: { piece?: string; issue?: number; worktree?: boolean | string; branch?: string; autoPr?: boolean },
 ): Promise<{ taskName: string; tasksFile: string }> {
   const runner = new TaskRunner(cwd);
-  const taskSlug = resolveUniqueTaskSlug(cwd, generateReportDir(taskContent));
-  const taskDir = path.join(cwd, '.takt', 'tasks', taskSlug);
-  const taskDirRelative = `.takt/tasks/${taskSlug}`;
+  const slug = await summarizeTaskName(taskContent, { cwd });
+  const summary = firstLine(taskContent);
+  const taskDirSlug = resolveUniqueTaskSlug(cwd, generateReportDir(taskContent));
+  const taskDir = path.join(cwd, '.takt', 'tasks', taskDirSlug);
+  const taskDirRelative = `.takt/tasks/${taskDirSlug}`;
   const orderPath = path.join(taskDir, 'order.md');
   fs.mkdirSync(taskDir, { recursive: true });
   fs.writeFileSync(orderPath, taskContent, 'utf-8');
@@ -55,6 +58,8 @@ export async function saveTaskFile(
   const created = runner.addTask(taskContent, {
     ...config,
     task_dir: taskDirRelative,
+    slug,
+    summary,
   });
   const tasksFile = path.join(cwd, '.takt', 'tasks.yaml');
   log.info('Task created', { taskName: created.name, tasksFile, config });
@@ -69,8 +74,8 @@ export async function saveTaskFile(
  */
 export function createIssueFromTask(task: string): number | undefined {
   info('Creating GitHub Issue...');
-  const firstLine = task.split('\n')[0] || task;
-  const title = firstLine.length > 100 ? `${firstLine.slice(0, 97)}...` : firstLine;
+  const titleLine = task.split('\n')[0] || task;
+  const title = titleLine.length > 100 ? `${titleLine.slice(0, 97)}...` : titleLine;
   const issueResult = createIssue({ title, body: task });
   if (issueResult.success) {
     success(`Issue created: ${issueResult.url}`);
diff --git a/src/features/tasks/execute/resolveTask.ts b/src/features/tasks/execute/resolveTask.ts
index 4367a6f..60adb6d 100644
--- a/src/features/tasks/execute/resolveTask.ts
+++ b/src/features/tasks/execute/resolveTask.ts
@@ -104,7 +104,7 @@ export async function resolveTaskExecution(
       worktreePath = task.worktreePath;
       isWorktree = true;
     } else {
-      const taskSlug = await withProgress(
+      const taskSlug = task.slug ?? await withProgress(
         'Generating branch name...',
         (slug) => `Branch name generated: ${slug}`,
         () => summarizeTaskName(task.content, { cwd: defaultCwd }),
diff --git a/src/features/tasks/execute/selectAndExecute.ts b/src/features/tasks/execute/selectAndExecute.ts
index 0dfa260..dccfb31 100644
--- a/src/features/tasks/execute/selectAndExecute.ts
+++ b/src/features/tasks/execute/selectAndExecute.ts
@@ -72,7 +72,7 @@ export async function confirmAndCreateWorktree(
     }),
   );
 
-  return { execCwd: result.path, isWorktree: true, branch: result.branch, baseBranch };
+  return { execCwd: result.path, isWorktree: true, branch: result.branch, baseBranch, taskSlug };
 }
 
 /**
@@ -92,7 +92,7 @@ export async function selectAndExecuteTask(
     return;
   }
 
-  const { execCwd, isWorktree, branch, baseBranch } = await confirmAndCreateWorktree(
+  const { execCwd, isWorktree, branch, baseBranch, taskSlug } = await confirmAndCreateWorktree(
     cwd,
     task,
     options?.createWorktree,
@@ -112,6 +112,7 @@ export async function selectAndExecuteTask(
     ...(branch ? { branch } : {}),
     ...(isWorktree ? { worktree_path: execCwd } : {}),
     auto_pr: shouldCreatePr,
+    ...(taskSlug ? { slug: taskSlug } : {}),
   });
   const startedAt = new Date().toISOString();
 
diff --git a/src/features/tasks/execute/types.ts b/src/features/tasks/execute/types.ts
index 30f07de..2636115 100644
--- a/src/features/tasks/execute/types.ts
+++ b/src/features/tasks/execute/types.ts
@@ -122,6 +122,7 @@ export interface WorktreeConfirmationResult {
   isWorktree: boolean;
   branch?: string;
   baseBranch?: string;
+  taskSlug?: string;
 }
 
 export interface SelectAndExecuteOptions {
diff --git a/src/features/tasks/list/index.ts b/src/features/tasks/list/index.ts
index 351cbe3..7367161 100644
--- a/src/features/tasks/list/index.ts
+++ b/src/features/tasks/list/index.ts
@@ -26,7 +26,7 @@ import {
 import { deletePendingTask, deleteFailedTask, deleteCompletedTask } from './taskDeleteActions.js';
 import { retryFailedTask } from './taskRetryActions.js';
 import { listTasksNonInteractive, type ListNonInteractiveOptions } from './listNonInteractive.js';
-import { formatTaskStatusLabel } from './taskStatusLabel.js';
+import { formatTaskStatusLabel, formatShortDate } from './taskStatusLabel.js';
 
 export type { ListNonInteractiveOptions } from './listNonInteractive.js';
 
@@ -130,7 +130,7 @@ export async function listTasks(
     const menuOptions = tasks.map((task, idx) => ({
       label: formatTaskStatusLabel(task),
       value: `${task.kind}:${idx}`,
-      description: `${task.content} | ${task.createdAt}`,
+      description: `${task.summary ?? task.content} | ${formatShortDate(task.createdAt)}`,
     }));
 
     const selected = await selectOption<string>(
diff --git a/src/features/tasks/list/listNonInteractive.ts b/src/features/tasks/list/listNonInteractive.ts
index 3c11cad..f8c271b 100644
--- a/src/features/tasks/list/listNonInteractive.ts
+++ b/src/features/tasks/list/listNonInteractive.ts
@@ -18,7 +18,7 @@ import {
   mergeBranch,
   deleteBranch,
 } from './taskActions.js';
-import { formatTaskStatusLabel } from './taskStatusLabel.js';
+import { formatTaskStatusLabel, formatShortDate } from './taskStatusLabel.js';
 
 export interface ListNonInteractiveOptions {
   enabled: boolean;
@@ -43,7 +43,7 @@ function printNonInteractiveList(tasks: TaskListItem[], format?: string): void {
   }
 
   for (const task of tasks) {
-    info(`${formatTaskStatusLabel(task)} - ${task.content} (${task.createdAt})`);
+    info(`${formatTaskStatusLabel(task)} - ${task.summary ?? task.content} (${formatShortDate(task.createdAt)})`);
   }
 }
 
diff --git a/src/features/tasks/list/taskStatusLabel.ts b/src/features/tasks/list/taskStatusLabel.ts
index 4a891b1..2212784 100644
--- a/src/features/tasks/list/taskStatusLabel.ts
+++ b/src/features/tasks/list/taskStatusLabel.ts
@@ -8,5 +8,18 @@ const TASK_STATUS_BY_KIND: Record<TaskListItem['kind'], string> = {
 };
 
 export function formatTaskStatusLabel(task: TaskListItem): string {
-  return `[${TASK_STATUS_BY_KIND[task.kind]}] ${task.name}`;
+  const status = `[${TASK_STATUS_BY_KIND[task.kind]}] ${task.name}`;
+  if (task.branch) {
+    return `${status} (${task.branch})`;
+  }
+  return status;
+}
+
+export function formatShortDate(isoString: string): string {
+  const date = new Date(isoString);
+  const month = String(date.getUTCMonth() + 1).padStart(2, '0');
+  const day = String(date.getUTCDate()).padStart(2, '0');
+  const hours = String(date.getUTCHours()).padStart(2, '0');
+  const minutes = String(date.getUTCMinutes()).padStart(2, '0');
+  return `${month}/${day} ${hours}:${minutes}`;
 }
diff --git a/src/infra/task/clone.ts b/src/infra/task/clone.ts
index a8cd649..ad4bc22 100644
--- a/src/infra/task/clone.ts
+++ b/src/infra/task/clone.ts
@@ -10,7 +10,7 @@
 import * as fs from 'node:fs';
 import * as path from 'node:path';
 import { execFileSync } from 'node:child_process';
-import { createLogger, slugify } from '../../shared/utils/index.js';
+import { createLogger } from '../../shared/utils/index.js';
 import { resolveConfigValue } from '../config/index.js';
 import type { WorktreeOptions, WorktreeResult } from './types.js';
 
@@ -48,7 +48,7 @@ export class CloneManager {
   /** Resolve the clone path based on options and global config */
   private static resolveClonePath(projectDir: string, options: WorktreeOptions): string {
     const timestamp = CloneManager.generateTimestamp();
-    const slug = slugify(options.taskSlug);
+    const slug = options.taskSlug;
 
     let dirName: string;
     if (options.issueNumber !== undefined && slug) {
@@ -74,7 +74,7 @@ export class CloneManager {
       return options.branch;
     }
 
-    const slug = slugify(options.taskSlug);
+    const slug = options.taskSlug;
 
     if (options.issueNumber !== undefined && slug) {
       return `takt/${options.issueNumber}/${slug}`;
diff --git a/src/infra/task/mapper.ts b/src/infra/task/mapper.ts
index c424b75..ae561a4 100644
--- a/src/infra/task/mapper.ts
+++ b/src/infra/task/mapper.ts
@@ -1,12 +1,9 @@
 import * as fs from 'node:fs';
 import * as path from 'node:path';
 import { TaskFileSchema, type TaskFileData, type TaskRecord } from './schema.js';
+import { firstLine } from './naming.js';
 import type { TaskInfo, TaskListItem } from './types.js';
 
-function firstLine(content: string): string {
-  return content.trim().split('\n')[0]?.slice(0, 80) ?? '';
-}
-
 function toDisplayPath(projectDir: string, targetPath: string): string {
   const relativePath = path.relative(projectDir, targetPath);
   if (!relativePath || relativePath.startsWith('..')) {
@@ -66,6 +63,7 @@ export function toTaskInfo(projectDir: string, tasksFile: string, task: TaskReco
   return {
     filePath: tasksFile,
     name: task.name,
+    slug: task.slug,
     content,
     taskDir: task.task_dir,
     createdAt: task.created_at,
@@ -119,6 +117,7 @@ function toBaseTaskListItem(projectDir: string, tasksFile: string, task: TaskRec
     createdAt: task.created_at,
     filePath: tasksFile,
     content: firstLine(resolveTaskContent(projectDir, task)),
+    summary: task.summary,
     branch: task.branch,
     worktreePath: task.worktree_path,
     startedAt: task.started_at ?? undefined,
diff --git a/src/infra/task/naming.ts b/src/infra/task/naming.ts
index 649fe8e..f208b48 100644
--- a/src/infra/task/naming.ts
+++ b/src/infra/task/naming.ts
@@ -5,18 +5,3 @@ export function nowIso(): string {
 export function firstLine(content: string): string {
   return content.trim().split('\n')[0]?.slice(0, 80) ?? '';
 }
-
-export function sanitizeTaskName(base: string): string {
-  const normalized = base
-    .toLowerCase()
-    .replace(/[^a-z0-9\s-]/g, ' ')
-    .trim()
-    .replace(/\s+/g, '-')
-    .replace(/-+/g, '-');
-
-  if (!normalized) {
-    return `task-${Date.now()}`;
-  }
-
-  return normalized;
-}
diff --git a/src/infra/task/runner.ts b/src/infra/task/runner.ts
index 20c658c..b8266d1 100644
--- a/src/infra/task/runner.ts
+++ b/src/infra/task/runner.ts
@@ -33,7 +33,13 @@ export class TaskRunner {
 
   addTask(
     content: string,
-    options?: Omit<TaskFileData, 'task'> & { content_file?: string; task_dir?: string; worktree_path?: string },
+    options?: Omit<TaskFileData, 'task'> & {
+      content_file?: string;
+      task_dir?: string;
+      worktree_path?: string;
+      slug?: string;
+      summary?: string;
+    },
   ): TaskInfo {
     return this.lifecycle.addTask(content, options);
   }
diff --git a/src/infra/task/schema.ts b/src/infra/task/schema.ts
index 3f5cc52..7f9c607 100644
--- a/src/infra/task/schema.ts
+++ b/src/infra/task/schema.ts
@@ -41,6 +41,8 @@ export type TaskFailure = z.infer<typeof TaskFailureSchema>;
 export const TaskRecordSchema = TaskExecutionConfigSchema.extend({
   name: z.string().min(1),
   status: TaskStatusSchema,
+  slug: z.string().optional(),
+  summary: z.string().optional(),
   worktree_path: z.string().optional(),
   content: z.string().min(1).optional(),
   content_file: z.string().min(1).optional(),
diff --git a/src/infra/task/summarize.ts b/src/infra/task/summarize.ts
index 4a6913d..662b2fb 100644
--- a/src/infra/task/summarize.ts
+++ b/src/infra/task/summarize.ts
@@ -7,7 +7,7 @@
 import * as wanakana from 'wanakana';
 import { resolveConfigValues } from '../config/index.js';
 import { getProvider, type ProviderType } from '../providers/index.js';
-import { createLogger } from '../../shared/utils/index.js';
+import { createLogger, slugify } from '../../shared/utils/index.js';
 import { loadTemplate } from '../../shared/prompts/index.js';
 import type { SummarizeOptions } from './types.js';
 
@@ -15,27 +15,12 @@ export type { SummarizeOptions };
 
 const log = createLogger('summarize');
 
-/**
- * Sanitize a string for use as git branch name and directory name.
- * Allows only: a-z, 0-9, hyphen.
- */
-function sanitizeSlug(input: string, maxLength = 30): string {
-  return input
-    .trim()
-    .toLowerCase()
-    .replace(/[^a-z0-9-]/g, '-')
-    .replace(/-+/g, '-')
-    .replace(/^-+/, '')
-    .slice(0, maxLength)
-    .replace(/-+$/, '');
-}
-
 /**
  * Convert Japanese text to romaji slug.
  */
 function toRomajiSlug(text: string): string {
   const romaji = wanakana.toRomaji(text, { customRomajiMapping: {} });
-  return sanitizeSlug(romaji);
+  return slugify(romaji);
 }
 
 /**
@@ -77,7 +62,7 @@ export class TaskSummarizer {
       permissionMode: 'readonly',
     });
 
-    const slug = sanitizeSlug(response.content);
+    const slug = slugify(response.content);
     log.info('Task name summarized', { original: taskName, slug });
 
     return slug || 'task';
diff --git a/src/infra/task/taskLifecycleService.ts b/src/infra/task/taskLifecycleService.ts
index 6cf6a93..c236103 100644
--- a/src/infra/task/taskLifecycleService.ts
+++ b/src/infra/task/taskLifecycleService.ts
@@ -3,7 +3,8 @@ import { TaskRecordSchema, type TaskFileData, type TaskRecord, type TaskFailure
 import type { TaskInfo, TaskResult } from './types.js';
 import { toTaskInfo } from './mapper.js';
 import { TaskStore } from './store.js';
-import { firstLine, nowIso, sanitizeTaskName } from './naming.js';
+import { firstLine, nowIso } from './naming.js';
+import { slugify } from '../../shared/utils/slug.js';
 import { isStaleRunningTask } from './process.js';
 import type { TaskStatus } from './schema.js';
 
@@ -16,13 +17,22 @@ export class TaskLifecycleService {
 
   addTask(
     content: string,
-    options?: Omit<TaskFileData, 'task'> & { content_file?: string; task_dir?: string; worktree_path?: string },
+    options?: Omit<TaskFileData, 'task'> & {
+      content_file?: string;
+      task_dir?: string;
+      worktree_path?: string;
+      slug?: string;
+      summary?: string;
+    },
   ): TaskInfo {
     const state = this.store.update((current) => {
-      const name = this.generateTaskName(content, current.tasks.map((task) => task.name));
+      const slug = options?.slug ?? slugify(firstLine(content));
+      const name = this.generateTaskName(slug, current.tasks.map((task) => task.name));
       const contentValue = options?.task_dir ? undefined : content;
       const record: TaskRecord = TaskRecordSchema.parse({
         name,
+        slug,
+        summary: options?.summary,
         status: 'pending',
         content: contentValue,
         created_at: nowIso(),
@@ -258,8 +268,8 @@ export class TaskLifecycleService {
     return isStaleRunningTask(task.owner_pid ?? undefined);
   }
 
-  private generateTaskName(content: string, existingNames: string[]): string {
-    const base = sanitizeTaskName(firstLine(content));
+  private generateTaskName(slug: string, existingNames: string[]): string {
+    const base = slug || `task-${Date.now()}`;
     let candidate = base;
     let counter = 1;
     while (existingNames.includes(candidate)) {
diff --git a/src/infra/task/types.ts b/src/infra/task/types.ts
index aee43fa..42d0f57 100644
--- a/src/infra/task/types.ts
+++ b/src/infra/task/types.ts
@@ -9,6 +9,7 @@ import type { TaskFailure, TaskStatus } from './schema.js';
 export interface TaskInfo {
   filePath: string;
   name: string;
+  slug?: string;
   content: string;
   taskDir?: string;
   createdAt: string;
@@ -81,6 +82,7 @@ export interface TaskListItem {
   createdAt: string;
   filePath: string;
   content: string;
+  summary?: string;
   branch?: string;
   worktreePath?: string;
   data?: TaskFileData;
diff --git a/src/shared/utils/reportDir.ts b/src/shared/utils/reportDir.ts
index 84480ac..244133f 100644
--- a/src/shared/utils/reportDir.ts
+++ b/src/shared/utils/reportDir.ts
@@ -2,6 +2,8 @@
  * Report directory name generation.
  */
 
+import { slugify } from './slug.js';
+
 export function generateReportDir(task: string): string {
   const now = new Date();
   const timestamp = now.toISOString()
@@ -9,12 +11,7 @@ export function generateReportDir(task: string): string {
     .slice(0, 14)
     .replace(/(\d{8})(\d{6})/, '$1-$2');
 
-  const summary = task
-    .slice(0, 30)
-    .toLowerCase()
-    .replace(/[^a-z0-9\u3040-\u309f\u30a0-\u30ff\u4e00-\u9faf]+/g, '-')
-    .replace(/^-+|-+$/g, '')
-    || 'task';
+  const summary = slugify(task.slice(0, 80)) || 'task';
 
   return `${timestamp}-${summary}`;
 }
diff --git a/src/shared/utils/slug.ts b/src/shared/utils/slug.ts
index 6bf6440..8dc0e7f 100644
--- a/src/shared/utils/slug.ts
+++ b/src/shared/utils/slug.ts
@@ -2,17 +2,18 @@
  * Text slugification utility
  *
  * Converts text into URL/filename-safe slugs.
- * Supports ASCII alphanumerics and CJK characters.
+ * Allowed characters: a-z, 0-9, hyphen. Max 30 characters.
  */
 
 /**
  * Convert text into a slug for use in filenames, paths, and branch names.
- * Preserves CJK characters (U+3000-9FFF, FF00-FFEF).
+ * Allowed: a-z 0-9 hyphen. Max 30 characters.
  */
 export function slugify(text: string): string {
   return text
     .toLowerCase()
-    .replace(/[^a-z0-9\u3000-\u9fff\uff00-\uffef]+/g, '-')
+    .replace(/[^a-z0-9]+/g, '-')
     .replace(/^-+|-+$/g, '')
-    .slice(0, 50);
+    .slice(0, 30)
+    .replace(/-+$/, '');
 }
diff --git a/src/shared/utils/taskPaths.ts b/src/shared/utils/taskPaths.ts
index b12d582..905eb4c 100644
--- a/src/shared/utils/taskPaths.ts
+++ b/src/shared/utils/taskPaths.ts
@@ -1,5 +1,5 @@
 const TASK_SLUG_PATTERN =
-  '[a-z0-9\\u3040-\\u309f\\u30a0-\\u30ff\\u4e00-\\u9faf](?:[a-z0-9\\u3040-\\u309f\\u30a0-\\u30ff\\u4e00-\\u9faf-]*[a-z0-9\\u3040-\\u309f\\u30a0-\\u30ff\\u4e00-\\u9faf])?';
+  '[a-z0-9](?:[a-z0-9-]*[a-z0-9])?';
 const TASK_DIR_PREFIX = '.takt/tasks/';
 const TASK_DIR_PATTERN = new RegExp(`^\\.takt/tasks/${TASK_SLUG_PATTERN}$`);
 const REPORT_DIR_NAME_PATTERN = new RegExp(`^${TASK_SLUG_PATTERN}$`);