takt: github-issue-132-moodono-piisu (#144)

src/__tests__/addTask.test.ts

@@ -53,7 +53,8 @@ vi.mock('../infra/config/loaders/pieceResolver.js', () => ({
   getPieceDescription: vi.fn(() => ({
     name: 'default',
     description: '',
-    pieceStructure: '1. implement\n2. review'
+    pieceStructure: '1. implement\n2. review',
+    movementPreviews: [],
   })),
 }));
 

src/__tests__/cli-routing-issue-resolve.test.ts

@@ -48,7 +48,8 @@ vi.mock('../features/interactive/index.js', () => ({
 }));
 
 vi.mock('../infra/config/index.js', () => ({
-  getPieceDescription: vi.fn(() => ({ name: 'default', description: 'test piece', pieceStructure: '' })),
+  getPieceDescription: vi.fn(() => ({ name: 'default', description: 'test piece', pieceStructure: '', movementPreviews: [] })),
+  loadGlobalConfig: vi.fn(() => ({ interactivePreviewMovements: 3 })),
 }));
 
 vi.mock('../shared/constants.js', () => ({

src/__tests__/formatMovementPreviews.test.ts

@@ -0,0 +1,139 @@
+/**
+ * Tests for formatMovementPreviews
+ */
+
+import { describe, it, expect } from 'vitest';
+import type { MovementPreview } from '../infra/config/loaders/pieceResolver.js';
+import { formatMovementPreviews } from '../features/interactive/interactive.js';
+
+describe('formatMovementPreviews', () => {
+  const basePreviews: MovementPreview[] = [
+    {
+      name: 'plan',
+      personaDisplayName: 'Planner',
+      personaContent: 'You are a planner.',
+      instructionContent: 'Create a plan for {task}',
+      allowedTools: ['Read', 'Glob', 'Grep'],
+      canEdit: false,
+    },
+    {
+      name: 'implement',
+      personaDisplayName: 'Coder',
+      personaContent: 'You are a coder.',
+      instructionContent: 'Implement the plan.',
+      allowedTools: ['Read', 'Edit', 'Bash'],
+      canEdit: true,
+    },
+  ];
+
+  it('should format previews with English labels', () => {
+    const result = formatMovementPreviews(basePreviews, 'en');
+
+    expect(result).toContain('### 1. plan (Planner)');
+    expect(result).toContain('**Persona:**');
+    expect(result).toContain('You are a planner.');
+    expect(result).toContain('**Instruction:**');
+    expect(result).toContain('Create a plan for {task}');
+    expect(result).toContain('**Tools:** Read, Glob, Grep');
+    expect(result).toContain('**Edit:** No');
+
+    expect(result).toContain('### 2. implement (Coder)');
+    expect(result).toContain('**Tools:** Read, Edit, Bash');
+    expect(result).toContain('**Edit:** Yes');
+  });
+
+  it('should format previews with Japanese labels', () => {
+    const result = formatMovementPreviews(basePreviews, 'ja');
+
+    expect(result).toContain('### 1. plan (Planner)');
+    expect(result).toContain('**ペルソナ:**');
+    expect(result).toContain('**インストラクション:**');
+    expect(result).toContain('**ツール:** Read, Glob, Grep');
+    expect(result).toContain('**編集:** 不可');
+    expect(result).toContain('**編集:** 可');
+  });
+
+  it('should show "None" when no tools are allowed (English)', () => {
+    const previews: MovementPreview[] = [
+      {
+        name: 'step',
+        personaDisplayName: 'Agent',
+        personaContent: 'Agent persona',
+        instructionContent: 'Do something',
+        allowedTools: [],
+        canEdit: false,
+      },
+    ];
+
+    const result = formatMovementPreviews(previews, 'en');
+
+    expect(result).toContain('**Tools:** None');
+  });
+
+  it('should show "なし" when no tools are allowed (Japanese)', () => {
+    const previews: MovementPreview[] = [
+      {
+        name: 'step',
+        personaDisplayName: 'Agent',
+        personaContent: 'Agent persona',
+        instructionContent: 'Do something',
+        allowedTools: [],
+        canEdit: false,
+      },
+    ];
+
+    const result = formatMovementPreviews(previews, 'ja');
+
+    expect(result).toContain('**ツール:** なし');
+  });
+
+  it('should skip empty persona content', () => {
+    const previews: MovementPreview[] = [
+      {
+        name: 'step',
+        personaDisplayName: 'Agent',
+        personaContent: '',
+        instructionContent: 'Do something',
+        allowedTools: [],
+        canEdit: false,
+      },
+    ];
+
+    const result = formatMovementPreviews(previews, 'en');
+
+    expect(result).not.toContain('**Persona:**');
+    expect(result).toContain('**Instruction:**');
+  });
+
+  it('should skip empty instruction content', () => {
+    const previews: MovementPreview[] = [
+      {
+        name: 'step',
+        personaDisplayName: 'Agent',
+        personaContent: 'Some persona',
+        instructionContent: '',
+        allowedTools: [],
+        canEdit: false,
+      },
+    ];
+
+    const result = formatMovementPreviews(previews, 'en');
+
+    expect(result).toContain('**Persona:**');
+    expect(result).not.toContain('**Instruction:**');
+  });
+
+  it('should return empty string for empty array', () => {
+    const result = formatMovementPreviews([], 'en');
+
+    expect(result).toBe('');
+  });
+
+  it('should separate multiple previews with double newline', () => {
+    const result = formatMovementPreviews(basePreviews, 'en');
+
+    // Two movements should be separated by \n\n
+    const parts = result.split('\n\n### ');
+    expect(parts.length).toBe(2);
+  });
+});

src/__tests__/globalConfig-defaults.test.ts

@@ -287,6 +287,55 @@ describe('loadGlobalConfig', () => {
     expect(config.notificationSound).toBeUndefined();
   });
 
+  it('should load interactive_preview_movements config from config.yaml', () => {
+    const taktDir = join(testHomeDir, '.takt');
+    mkdirSync(taktDir, { recursive: true });
+    writeFileSync(
+      getGlobalConfigPath(),
+      'language: en\ninteractive_preview_movements: 5\n',
+      'utf-8',
+    );
+
+    const config = loadGlobalConfig();
+    expect(config.interactivePreviewMovements).toBe(5);
+  });
+
+  it('should save and reload interactive_preview_movements config', () => {
+    const taktDir = join(testHomeDir, '.takt');
+    mkdirSync(taktDir, { recursive: true });
+    writeFileSync(getGlobalConfigPath(), 'language: en\n', 'utf-8');
+
+    const config = loadGlobalConfig();
+    config.interactivePreviewMovements = 7;
+    saveGlobalConfig(config);
+    invalidateGlobalConfigCache();
+
+    const reloaded = loadGlobalConfig();
+    expect(reloaded.interactivePreviewMovements).toBe(7);
+  });
+
+  it('should default interactive_preview_movements to 3', () => {
+    const taktDir = join(testHomeDir, '.takt');
+    mkdirSync(taktDir, { recursive: true });
+    writeFileSync(getGlobalConfigPath(), 'language: en\n', 'utf-8');
+
+    const config = loadGlobalConfig();
+    expect(config.interactivePreviewMovements).toBe(3);
+  });
+
+  it('should accept interactive_preview_movements: 0 to disable', () => {
+    const taktDir = join(testHomeDir, '.takt');
+    mkdirSync(taktDir, { recursive: true });
+    writeFileSync(
+      getGlobalConfigPath(),
+      'language: en\ninteractive_preview_movements: 0\n',
+      'utf-8',
+    );
+
+    const config = loadGlobalConfig();
+    expect(config.interactivePreviewMovements).toBe(0);
+  });
+
   describe('provider/model compatibility validation', () => {
     it('should throw when provider is codex but model is a Claude alias (opus)', () => {
       const taktDir = join(testHomeDir, '.takt');

src/__tests__/pieceResolver.test.ts

@@ -1,9 +1,9 @@
 /**
- * Tests for getPieceDescription and buildWorkflowString
+ * Tests for getPieceDescription, buildWorkflowString, and buildMovementPreviews
  */
 
 import { describe, it, expect, beforeEach, afterEach } from 'vitest';
-import { mkdtempSync, writeFileSync, mkdirSync, rmSync } from 'node:fs';
+import { mkdtempSync, writeFileSync, mkdirSync, rmSync, chmodSync } from 'node:fs';
 import { join } from 'node:path';
 import { tmpdir } from 'node:os';
 import { getPieceDescription } from '../infra/config/loaders/pieceResolver.js';
@@ -49,6 +49,7 @@ movements:
     expect(result.pieceStructure).toBe(
       '1. plan (タスク計画)\n2. implement (実装)\n3. review'
     );
+    expect(result.movementPreviews).toEqual([]);
   });
 
   it('should return workflow structure with parallel movements', () => {
@@ -91,6 +92,7 @@ movements:
       '   - arch_review\n' +
       '3. fix (修正)'
     );
+    expect(result.movementPreviews).toEqual([]);
   });
 
   it('should handle movements without descriptions', () => {
@@ -115,6 +117,7 @@ movements:
     expect(result.name).toBe('minimal');
     expect(result.description).toBe('');
     expect(result.pieceStructure).toBe('1. step1\n2. step2');
+    expect(result.movementPreviews).toEqual([]);
   });
 
   it('should return empty strings when piece is not found', () => {
@@ -123,6 +126,7 @@ movements:
     expect(result.name).toBe('nonexistent');
     expect(result.description).toBe('');
     expect(result.pieceStructure).toBe('');
+    expect(result.movementPreviews).toEqual([]);
   });
 
   it('should handle parallel movements without descriptions', () => {
@@ -151,5 +155,411 @@ movements:
       '   - child1\n' +
       '   - child2'
     );
+    expect(result.movementPreviews).toEqual([]);
+  });
+});
+
+describe('getPieceDescription with movementPreviews', () => {
+  let tempDir: string;
+
+  beforeEach(() => {
+    tempDir = mkdtempSync(join(tmpdir(), 'takt-test-previews-'));
+  });
+
+  afterEach(() => {
+    rmSync(tempDir, { recursive: true, force: true });
+  });
+
+  it('should return movement previews when previewCount is specified', () => {
+    const pieceYaml = `name: preview-test
+description: Test piece
+initial_movement: plan
+max_iterations: 5
+
+movements:
+  - name: plan
+    description: Planning
+    persona: Plan the task
+    instruction: "Create a plan for {task}"
+    allowed_tools:
+      - Read
+      - Glob
+    rules:
+      - condition: plan complete
+        next: implement
+  - name: implement
+    description: Implementation
+    persona: Implement the code
+    instruction: "Implement according to plan"
+    edit: true
+    allowed_tools:
+      - Read
+      - Edit
+      - Bash
+    rules:
+      - condition: done
+        next: review
+  - name: review
+    persona: Review the code
+    instruction: "Review changes"
+    rules:
+      - condition: approved
+        next: COMPLETE
+`;
+
+    const piecePath = join(tempDir, 'preview-test.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 3);
+
+    expect(result.movementPreviews).toHaveLength(3);
+
+    // First movement: plan
+    expect(result.movementPreviews[0].name).toBe('plan');
+    expect(result.movementPreviews[0].personaContent).toBe('Plan the task');
+    expect(result.movementPreviews[0].instructionContent).toBe('Create a plan for {task}');
+    expect(result.movementPreviews[0].allowedTools).toEqual(['Read', 'Glob']);
+    expect(result.movementPreviews[0].canEdit).toBe(false);
+
+    // Second movement: implement
+    expect(result.movementPreviews[1].name).toBe('implement');
+    expect(result.movementPreviews[1].personaContent).toBe('Implement the code');
+    expect(result.movementPreviews[1].instructionContent).toBe('Implement according to plan');
+    expect(result.movementPreviews[1].allowedTools).toEqual(['Read', 'Edit', 'Bash']);
+    expect(result.movementPreviews[1].canEdit).toBe(true);
+
+    // Third movement: review
+    expect(result.movementPreviews[2].name).toBe('review');
+    expect(result.movementPreviews[2].personaContent).toBe('Review the code');
+    expect(result.movementPreviews[2].canEdit).toBe(false);
+  });
+
+  it('should return empty previews when previewCount is 0', () => {
+    const pieceYaml = `name: test
+initial_movement: step1
+max_iterations: 1
+
+movements:
+  - name: step1
+    persona: agent
+    instruction: "Do step1"
+`;
+
+    const piecePath = join(tempDir, 'test.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 0);
+
+    expect(result.movementPreviews).toEqual([]);
+  });
+
+  it('should return empty previews when previewCount is not specified', () => {
+    const pieceYaml = `name: test
+initial_movement: step1
+max_iterations: 1
+
+movements:
+  - name: step1
+    persona: agent
+    instruction: "Do step1"
+`;
+
+    const piecePath = join(tempDir, 'test.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir);
+
+    expect(result.movementPreviews).toEqual([]);
+  });
+
+  it('should stop at COMPLETE movement', () => {
+    const pieceYaml = `name: test-complete
+initial_movement: step1
+max_iterations: 3
+
+movements:
+  - name: step1
+    persona: agent1
+    instruction: "Step 1"
+    rules:
+      - condition: done
+        next: COMPLETE
+  - name: step2
+    persona: agent2
+    instruction: "Step 2"
+`;
+
+    const piecePath = join(tempDir, 'test-complete.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 5);
+
+    expect(result.movementPreviews).toHaveLength(1);
+    expect(result.movementPreviews[0].name).toBe('step1');
+  });
+
+  it('should stop at ABORT movement', () => {
+    const pieceYaml = `name: test-abort
+initial_movement: step1
+max_iterations: 3
+
+movements:
+  - name: step1
+    persona: agent1
+    instruction: "Step 1"
+    rules:
+      - condition: abort
+        next: ABORT
+  - name: step2
+    persona: agent2
+    instruction: "Step 2"
+`;
+
+    const piecePath = join(tempDir, 'test-abort.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 5);
+
+    expect(result.movementPreviews).toHaveLength(1);
+    expect(result.movementPreviews[0].name).toBe('step1');
+  });
+
+  it('should read persona content from file when personaPath is set', () => {
+    const personaContent = '# Planner Persona\nYou are a planning expert.';
+    const personaPath = join(tempDir, 'planner.md');
+    writeFileSync(personaPath, personaContent);
+
+    const pieceYaml = `name: test-persona-file
+initial_movement: plan
+max_iterations: 1
+
+personas:
+  planner: ./planner.md
+
+movements:
+  - name: plan
+    persona: planner
+    instruction: "Plan the task"
+`;
+
+    const piecePath = join(tempDir, 'test-persona-file.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 1);
+
+    expect(result.movementPreviews).toHaveLength(1);
+    expect(result.movementPreviews[0].name).toBe('plan');
+    expect(result.movementPreviews[0].personaContent).toBe(personaContent);
+  });
+
+  it('should limit previews to maxCount', () => {
+    const pieceYaml = `name: test-limit
+initial_movement: step1
+max_iterations: 5
+
+movements:
+  - name: step1
+    persona: agent1
+    instruction: "Step 1"
+    rules:
+      - condition: done
+        next: step2
+  - name: step2
+    persona: agent2
+    instruction: "Step 2"
+    rules:
+      - condition: done
+        next: step3
+  - name: step3
+    persona: agent3
+    instruction: "Step 3"
+`;
+
+    const piecePath = join(tempDir, 'test-limit.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 2);
+
+    expect(result.movementPreviews).toHaveLength(2);
+    expect(result.movementPreviews[0].name).toBe('step1');
+    expect(result.movementPreviews[1].name).toBe('step2');
+  });
+
+  it('should handle movements without rules (stop after first)', () => {
+    const pieceYaml = `name: test-no-rules
+initial_movement: step1
+max_iterations: 3
+
+movements:
+  - name: step1
+    persona: agent1
+    instruction: "Step 1"
+  - name: step2
+    persona: agent2
+    instruction: "Step 2"
+`;
+
+    const piecePath = join(tempDir, 'test-no-rules.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 3);
+
+    expect(result.movementPreviews).toHaveLength(1);
+    expect(result.movementPreviews[0].name).toBe('step1');
+  });
+
+  it('should return empty previews when initial movement not found in list', () => {
+    const pieceYaml = `name: test-missing-initial
+initial_movement: nonexistent
+max_iterations: 1
+
+movements:
+  - name: step1
+    persona: agent
+    instruction: "Do something"
+`;
+
+    const piecePath = join(tempDir, 'test-missing-initial.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 3);
+
+    expect(result.movementPreviews).toEqual([]);
+  });
+
+  it('should handle self-referencing rule (prevent infinite loop)', () => {
+    const pieceYaml = `name: test-self-ref
+initial_movement: step1
+max_iterations: 5
+
+movements:
+  - name: step1
+    persona: agent1
+    instruction: "Step 1"
+    rules:
+      - condition: loop
+        next: step1
+`;
+
+    const piecePath = join(tempDir, 'test-self-ref.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 5);
+
+    expect(result.movementPreviews).toHaveLength(1);
+    expect(result.movementPreviews[0].name).toBe('step1');
+  });
+
+  it('should handle multi-node cycle A→B→A (prevent duplicate previews)', () => {
+    const pieceYaml = `name: test-cycle
+initial_movement: stepA
+max_iterations: 10
+
+movements:
+  - name: stepA
+    persona: agentA
+    instruction: "Step A"
+    rules:
+      - condition: next
+        next: stepB
+  - name: stepB
+    persona: agentB
+    instruction: "Step B"
+    rules:
+      - condition: back
+        next: stepA
+`;
+
+    const piecePath = join(tempDir, 'test-cycle.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 10);
+
+    expect(result.movementPreviews).toHaveLength(2);
+    expect(result.movementPreviews[0].name).toBe('stepA');
+    expect(result.movementPreviews[1].name).toBe('stepB');
+  });
+
+  it('should return empty movementPreviews when piece is not found', () => {
+    const result = getPieceDescription('nonexistent', tempDir, 3);
+
+    expect(result.movementPreviews).toEqual([]);
+  });
+
+  it('should use inline persona content when no personaPath', () => {
+    const pieceYaml = `name: test-inline
+initial_movement: step1
+max_iterations: 1
+
+movements:
+  - name: step1
+    persona: You are an inline persona
+    instruction: "Do something"
+`;
+
+    const piecePath = join(tempDir, 'test-inline.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 1);
+
+    expect(result.movementPreviews).toHaveLength(1);
+    expect(result.movementPreviews[0].personaContent).toBe('You are an inline persona');
+  });
+
+  it('should fallback to empty personaContent when personaPath file becomes unreadable', () => {
+    // Create the persona file so it passes existsSync during parsing
+    const personaPath = join(tempDir, 'unreadable-persona.md');
+    writeFileSync(personaPath, '# Persona content');
+    // Make the file unreadable so readFileSync fails in buildMovementPreviews
+    chmodSync(personaPath, 0o000);
+
+    const pieceYaml = `name: test-unreadable-persona
+initial_movement: plan
+max_iterations: 1
+
+personas:
+  planner: ./unreadable-persona.md
+
+movements:
+  - name: plan
+    persona: planner
+    instruction: "Plan the task"
+`;
+
+    const piecePath = join(tempDir, 'test-unreadable-persona.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    try {
+      const result = getPieceDescription(piecePath, tempDir, 1);
+
+      expect(result.movementPreviews).toHaveLength(1);
+      expect(result.movementPreviews[0].name).toBe('plan');
+      expect(result.movementPreviews[0].personaContent).toBe('');
+      expect(result.movementPreviews[0].instructionContent).toBe('Plan the task');
+    } finally {
+      // Restore permissions so cleanup can remove the file
+      chmodSync(personaPath, 0o644);
+    }
+  });
+
+  it('should include personaDisplayName in previews', () => {
+    const pieceYaml = `name: test-display
+initial_movement: step1
+max_iterations: 1
+
+movements:
+  - name: step1
+    persona: agent
+    persona_name: Custom Agent Name
+    instruction: "Do something"
+`;
+
+    const piecePath = join(tempDir, 'test-display.yaml');
+    writeFileSync(piecePath, pieceYaml);
+
+    const result = getPieceDescription(piecePath, tempDir, 1);
+
+    expect(result.movementPreviews).toHaveLength(1);
+    expect(result.movementPreviews[0].personaDisplayName).toBe('Custom Agent Name');
   });
 });

src/app/cli/routing.ts

@@ -11,7 +11,7 @@ import { fetchIssue, formatIssueAsTask, checkGhCli, parseIssueNumbers, type GitH
 import { selectAndExecuteTask, determinePiece, saveTaskFromInteractive, createIssueFromTask, type SelectAndExecuteOptions } from '../../features/tasks/index.js';
 import { executePipeline } from '../../features/pipeline/index.js';
 import { interactiveMode } from '../../features/interactive/index.js';
-import { getPieceDescription } from '../../infra/config/index.js';
+import { getPieceDescription, loadGlobalConfig } from '../../infra/config/index.js';
 import { DEFAULT_PIECE_NAME } from '../../shared/constants.js';
 import { program, resolvedCwd, pipelineMode } from './program.js';
 import { resolveAgentOverrides, parseCreateWorktreeOption, isDirectTask } from './helpers.js';
@@ -124,7 +124,9 @@ export async function executeDefaultAction(task?: string): Promise<void> {
     return;
   }
 
-  const pieceContext = getPieceDescription(pieceId, resolvedCwd);
+  const globalConfig = loadGlobalConfig();
+  const previewCount = globalConfig.interactivePreviewMovements;
+  const pieceContext = getPieceDescription(pieceId, resolvedCwd, previewCount);
   const result = await interactiveMode(resolvedCwd, initialInput, pieceContext);
 
   switch (result.action) {

src/core/models/global-config.ts

@@ -67,6 +67,8 @@ export interface GlobalConfig {
   preventSleep?: boolean;
   /** Enable notification sounds (default: true when undefined) */
   notificationSound?: boolean;
+  /** Number of movement previews to inject into interactive mode (0 to disable, max 10) */
+  interactivePreviewMovements?: number;
   /** Number of tasks to run concurrently in takt run (default: 1 = sequential) */
   concurrency: number;
 }

src/core/models/schemas.ts

@@ -318,6 +318,8 @@ export const GlobalConfigSchema = z.object({
   prevent_sleep: z.boolean().optional(),
   /** Enable notification sounds (default: true when undefined) */
   notification_sound: z.boolean().optional(),
+  /** Number of movement previews to inject into interactive mode (0 to disable, max 10) */
+  interactive_preview_movements: z.number().int().min(0).max(10).optional().default(3),
   /** Number of tasks to run concurrently in takt run (default: 1 = sequential, max: 10) */
   concurrency: z.number().int().min(1).max(10).optional().default(1),
 });

src/features/interactive/interactive.ts

@@ -19,6 +19,7 @@ import {
   loadSessionState,
   clearSessionState,
   type SessionState,
+  type MovementPreview,
 } from '../../infra/config/index.js';
 import { isQuietMode } from '../../shared/context.js';
 import { getProvider, type ProviderType } from '../../infra/providers/index.js';
@@ -90,8 +91,44 @@ function resolveLanguage(lang?: Language): 'en' | 'ja' {
   return lang === 'ja' ? 'ja' : 'en';
 }
 
+/**
+ * Format MovementPreview[] into a Markdown string for template injection.
+ * Each movement is rendered with its persona and instruction content.
+ */
+export function formatMovementPreviews(previews: MovementPreview[], lang: 'en' | 'ja'): string {
+  return previews.map((p, i) => {
+    const toolsStr = p.allowedTools.length > 0
+      ? p.allowedTools.join(', ')
+      : (lang === 'ja' ? 'なし' : 'None');
+    const editStr = p.canEdit
+      ? (lang === 'ja' ? '可' : 'Yes')
+      : (lang === 'ja' ? '不可' : 'No');
+    const personaLabel = lang === 'ja' ? 'ペルソナ' : 'Persona';
+    const instructionLabel = lang === 'ja' ? 'インストラクション' : 'Instruction';
+    const toolsLabel = lang === 'ja' ? 'ツール' : 'Tools';
+    const editLabel = lang === 'ja' ? '編集' : 'Edit';
+
+    const lines = [
+      `### ${i + 1}. ${p.name} (${p.personaDisplayName})`,
+    ];
+    if (p.personaContent) {
+      lines.push(`**${personaLabel}:**`, p.personaContent);
+    }
+    if (p.instructionContent) {
+      lines.push(`**${instructionLabel}:**`, p.instructionContent);
+    }
+    lines.push(`**${toolsLabel}:** ${toolsStr}`, `**${editLabel}:** ${editStr}`);
+    return lines.join('\n');
+  }).join('\n\n');
+}
+
 function getInteractivePrompts(lang: 'en' | 'ja', pieceContext?: PieceContext) {
-  const systemPrompt = loadTemplate('score_interactive_system_prompt', lang, {});
+  const hasPreview = !!pieceContext?.movementPreviews?.length;
+  const systemPrompt = loadTemplate('score_interactive_system_prompt', lang, {
+    hasPiecePreview: hasPreview,
+    pieceStructure: pieceContext?.pieceStructure ?? '',
+    movementDetails: hasPreview ? formatMovementPreviews(pieceContext!.movementPreviews!, lang) : '',
+  });
   const policyContent = loadTemplate('score_interactive_policy', lang, {});
 
   return {
@@ -149,10 +186,15 @@ function buildSummaryPrompt(
   }
 
   const hasPiece = !!pieceContext;
+  const hasPreview = !!pieceContext?.movementPreviews?.length;
+  const summaryMovementDetails = hasPreview
+    ? `\n### ${lang === 'ja' ? '処理するエージェント' : 'Processing Agents'}\n${formatMovementPreviews(pieceContext!.movementPreviews!, lang)}`
+    : '';
   return loadTemplate('score_summary_system_prompt', lang, {
     pieceInfo: hasPiece,
     pieceName: pieceContext?.name ?? '',
     pieceDescription: pieceContext?.description ?? '',
+    movementDetails: summaryMovementDetails,
     conversation,
   });
 }
@@ -220,6 +262,8 @@ export interface PieceContext {
   description: string;
   /** Piece structure (numbered list of movements) */
   pieceStructure: string;
+  /** Movement previews (persona + instruction content for first N movements) */
+  movementPreviews?: MovementPreview[];
 }
 
 /**

src/features/tasks/add/index.ts

@@ -11,7 +11,7 @@ import { stringify as stringifyYaml } from 'yaml';
 import { promptInput, confirm } from '../../../shared/prompt/index.js';
 import { success, info, error } from '../../../shared/ui/index.js';
 import { summarizeTaskName, type TaskFileData } from '../../../infra/task/index.js';
-import { getPieceDescription } from '../../../infra/config/index.js';
+import { getPieceDescription, loadGlobalConfig } from '../../../infra/config/index.js';
 import { determinePiece } from '../execute/selectAndExecute.js';
 import { createLogger, getErrorMessage } from '../../../shared/utils/index.js';
 import { isIssueReference, resolveIssueTask, parseIssueNumbers, createIssue } from '../../../infra/github/index.js';
@@ -151,7 +151,9 @@ export async function addTask(cwd: string, task?: string): Promise<void> {
     }
     piece = pieceId;
 
-    const pieceContext = getPieceDescription(pieceId, cwd);
+    const globalConfig = loadGlobalConfig();
+    const previewCount = globalConfig.interactivePreviewMovements;
+    const pieceContext = getPieceDescription(pieceId, cwd, previewCount);
 
     // Interactive mode: AI conversation to refine task
     const result = await interactiveMode(cwd, undefined, pieceContext);

src/infra/config/global/globalConfig.ts

@@ -35,6 +35,7 @@ function createDefaultGlobalConfig(): GlobalConfig {
     logLevel: 'info',
     provider: 'claude',
     enableBuiltinPieces: true,
+    interactivePreviewMovements: 3,
     concurrency: 1,
   };
 }
@@ -107,6 +108,7 @@ export class GlobalConfigManager {
       branchNameStrategy: parsed.branch_name_strategy,
       preventSleep: parsed.prevent_sleep,
       notificationSound: parsed.notification_sound,
+      interactivePreviewMovements: parsed.interactive_preview_movements,
       concurrency: parsed.concurrency,
     };
     validateProviderModelCompatibility(config.provider, config.model);
@@ -177,6 +179,9 @@ export class GlobalConfigManager {
     if (config.notificationSound !== undefined) {
       raw.notification_sound = config.notificationSound;
     }
+    if (config.interactivePreviewMovements !== undefined) {
+      raw.interactive_preview_movements = config.interactivePreviewMovements;
+    }
     if (config.concurrency !== undefined && config.concurrency > 1) {
       raw.concurrency = config.concurrency;
     }

src/infra/config/loaders/index.ts

@@ -12,6 +12,7 @@ export {
   loadAllPiecesWithSources,
   listPieces,
   listPieceEntries,
+  type MovementPreview,
   type PieceDirEntry,
   type PieceSource,
   type PieceWithSource,

src/infra/config/loaders/pieceLoader.ts

@@ -20,6 +20,7 @@ export {
   loadAllPiecesWithSources,
   listPieces,
   listPieceEntries,
+  type MovementPreview,
   type PieceDirEntry,
   type PieceSource,
   type PieceWithSource,

src/infra/config/loaders/pieceResolver.ts

@@ -5,7 +5,7 @@
  * using the priority chain: project-local → user → builtin.
  */
 
-import { existsSync, readdirSync, statSync } from 'node:fs';
+import { existsSync, readFileSync, readdirSync, statSync } from 'node:fs';
 import { join, resolve, isAbsolute } from 'node:path';
 import { homedir } from 'node:os';
 import type { PieceConfig, PieceMovement } from '../../../core/models/index.js';
@@ -176,22 +176,100 @@ function buildWorkflowString(movements: PieceMovement[]): string {
   return lines.join('\n');
 }
 
+export interface MovementPreview {
+  /** Movement name (e.g., "plan") */
+  name: string;
+  /** Persona display name (e.g., "Planner") */
+  personaDisplayName: string;
+  /** Persona prompt content (read from personaPath file) */
+  personaContent: string;
+  /** Instruction template content (already resolved at parse time) */
+  instructionContent: string;
+  /** Allowed tools for this movement */
+  allowedTools: string[];
+  /** Whether this movement can edit files */
+  canEdit: boolean;
+}
+
+/**
+ * Build movement previews for the first N movements of a piece.
+ * Follows the execution order: initialMovement → rules[0].next → ...
+ *
+ * @param piece - Loaded PieceConfig
+ * @param maxCount - Maximum number of previews to build
+ * @returns Array of MovementPreview (may be shorter than maxCount)
+ */
+function buildMovementPreviews(piece: PieceConfig, maxCount: number): MovementPreview[] {
+  if (maxCount <= 0 || piece.movements.length === 0) return [];
+
+  const movementMap = new Map<string, PieceMovement>();
+  for (const m of piece.movements) {
+    movementMap.set(m.name, m);
+  }
+
+  const previews: MovementPreview[] = [];
+  const visited = new Set<string>();
+  let currentName: string | undefined = piece.initialMovement;
+
+  while (currentName && previews.length < maxCount) {
+    if (currentName === 'COMPLETE' || currentName === 'ABORT') break;
+    if (visited.has(currentName)) break;
+    visited.add(currentName);
+
+    const movement = movementMap.get(currentName);
+    if (!movement) break;
+
+    let personaContent = '';
+    if (movement.personaPath) {
+      try {
+        personaContent = readFileSync(movement.personaPath, 'utf-8');
+      } catch (err) {
+        log.debug('Failed to read persona file for preview', {
+          path: movement.personaPath,
+          error: getErrorMessage(err),
+        });
+      }
+    } else if (movement.persona) {
+      personaContent = movement.persona;
+    }
+
+    previews.push({
+      name: movement.name,
+      personaDisplayName: movement.personaDisplayName,
+      personaContent,
+      instructionContent: movement.instructionTemplate,
+      allowedTools: movement.allowedTools ?? [],
+      canEdit: movement.edit === true,
+    });
+
+    const nextName = movement.rules?.[0]?.next;
+    if (!nextName) break;
+    currentName = nextName;
+  }
+
+  return previews;
+}
+
 /**
  * Get piece description by identifier.
- * Returns the piece name, description, and workflow structure.
+ * Returns the piece name, description, workflow structure, and optional movement previews.
  */
 export function getPieceDescription(
   identifier: string,
   projectCwd: string,
-): { name: string; description: string; pieceStructure: string } {
+  previewCount?: number,
+): { name: string; description: string; pieceStructure: string; movementPreviews: MovementPreview[] } {
   const piece = loadPieceByIdentifier(identifier, projectCwd);
   if (!piece) {
-    return { name: identifier, description: '', pieceStructure: '' };
+    return { name: identifier, description: '', pieceStructure: '', movementPreviews: [] };
   }
   return {
     name: piece.name,
     description: piece.description ?? '',
     pieceStructure: buildWorkflowString(piece.movements),
+    movementPreviews: previewCount && previewCount > 0
+      ? buildMovementPreviews(piece, previewCount)
+      : [],
   };
 }
 

src/infra/config/loaders/resource-resolver.ts

@@ -138,7 +138,8 @@ export function resolveRefToContent(
   }
 
   if (facetType && context) {
-    return resolveFacetByName(ref, facetType, context);
+    const facetContent = resolveFacetByName(ref, facetType, context);
+    if (facetContent !== undefined) return facetContent;
   }
 
   return resolveResourceContent(ref, pieceDir);

src/shared/prompts/en/score_interactive_policy.md

@@ -13,7 +13,7 @@ Focus on creating task instructions for the piece. Do not execute tasks or inves
 | Principle | Standard |
 |-----------|----------|
 | Focus on instruction creation | Task execution is always the piece's job |
-| Restrain investigation | Do not investigate unless explicitly requested |
+| Smart delegation | Delegate what agents can investigate on their own |
 | Concise responses | Key points only. Avoid verbose explanations |
 
 ## Understanding User Intent
@@ -28,19 +28,19 @@ The user is NOT asking YOU to do the work, but asking you to create task instruc
 
 ## Investigation Guidelines
 
-### When Investigation IS Appropriate (Rare)
+### When Investigation IS Appropriate
 
-Only when the user explicitly asks YOU to investigate:
-- "Read the README to understand the project structure"
-- "Read file X to see what it does"
-- "What does this project do?"
+When it improves instruction quality:
+- Verifying file or module existence (narrowing targets)
+- Understanding project structure (improving instruction accuracy)
+- When the user explicitly asks you to investigate
 
-### When Investigation is NOT Appropriate (Most Cases)
+### When Investigation is NOT Appropriate
 
-When the user is describing a task for the piece:
-- "Review the changes" → Create instructions without investigating
-- "Fix the code" → Create instructions without investigating
-- "Implement X" → Create instructions without investigating
+When agents can investigate on their own:
+- Implementation details (code internals, dependency analysis)
+- Determining how to make changes
+- Running tests or builds
 
 ## Strict Requirements
 

src/shared/prompts/en/score_interactive_system_prompt.md

@@ -1,7 +1,7 @@
 <!--
   template: score_interactive_system_prompt
   role: system prompt for interactive planning mode
-  vars: (none)
+  vars: hasPiecePreview, pieceStructure, movementDetails
   caller: features/interactive
 -->
 # Interactive Mode Assistant
@@ -24,3 +24,22 @@ Handles TAKT's interactive mode, conversing with users to create task instructio
 - Investigate codebase, understand prerequisites, identify target files (piece's job)
 - Execute tasks (piece's job)
 - Mention slash commands
+{{#if hasPiecePreview}}
+
+## Piece Structure
+
+This task will be processed through the following workflow:
+{{pieceStructure}}
+
+### Agent Details
+
+The following agents will process the task sequentially. Understand each agent's capabilities and instructions to improve the quality of your task instructions.
+
+{{movementDetails}}
+
+### Delegation Guidance
+
+- Do not include excessive detail in instructions for things the agents above can investigate and determine on their own
+- Clearly include information that agents cannot resolve on their own (user intent, priorities, constraints, etc.)
+- Delegate codebase investigation, implementation details, and dependency analysis to the agents
+{{/if}}

src/shared/prompts/en/score_summary_system_prompt.md

@@ -1,7 +1,7 @@
 <!--
   template: score_summary_system_prompt
   role: system prompt for conversation-to-task summarization
-  vars: pieceInfo, pieceName, pieceDescription, conversation
+  vars: pieceInfo, pieceName, pieceDescription, movementDetails, conversation
   caller: features/interactive
 -->
 You are a task summarizer. Convert the conversation into a concrete task instruction for the planning step.
@@ -18,6 +18,7 @@ Requirements:
 ## Destination of Your Task Instruction
 This task instruction will be passed to the "{{pieceName}}" piece.
 Piece description: {{pieceDescription}}
+{{movementDetails}}
 
 Create the instruction in the format expected by this piece.
 {{/if}}

src/shared/prompts/ja/score_interactive_policy.md

@@ -13,7 +13,7 @@
 | 原則 | 基準 |
 |------|------|
 | 指示書作成に専念 | タスク実行は常にピースの仕事 |
-| 調査の抑制 | 明示的な依頼がない限り調査しない |
+| スマートな委譲 | エージェントが調査できる内容は委ねる |
 | 簡潔な返答 | 要点のみ。冗長な説明を避ける |
 
 ## ユーザーの意図の理解
@@ -28,19 +28,19 @@
 
 ## 調査の判断基準
 
-### 調査してよい場合（稀）
+### 調査してよい場合
 
-ユーザーが明示的に「あなた」に調査を依頼した場合のみ:
-- 「READMEを読んでプロジェクト構造を理解して」
-- 「ファイルXを読んで何をしているか見て」
-- 「このプロジェクトは何をするもの？」
+指示書の質を上げるために有益な場合:
+- ファイルやモジュールの存在確認（対象の絞り込み）
+- プロジェクト構造の把握（指示書の精度向上）
+- ユーザーが明示的に調査を依頼した場合
 
-### 調査してはいけない場合（ほとんど）
+### 調査しない場合
 
-ユーザーがピース向けのタスクを説明している場合:
-- 「変更をレビューして」→ 調査せずに指示書を作成
-- 「コードを修正して」→ 調査せずに指示書を作成
-- 「Xを実装して」→ 調査せずに指示書を作成
+エージェントが自分で調査できる内容:
+- 実装の詳細（コードの中身、依存関係の解析）
+- 変更方法の特定（どう修正するか）
+- テスト・ビルドの実行
 
 ## 厳守事項
 

src/shared/prompts/ja/score_interactive_system_prompt.md

@@ -1,7 +1,7 @@
 <!--
   template: score_interactive_system_prompt
   role: system prompt for interactive planning mode
-  vars: (none)
+  vars: hasPiecePreview, pieceStructure, movementDetails
   caller: features/interactive
 -->
 # 対話モードアシスタント
@@ -24,3 +24,22 @@ TAKTの対話モードを担当し、ユーザーと会話してピース実行
 - コードベース調査、前提把握、対象ファイル特定（ピースの仕事）
 - タスクの実行（ピースの仕事）
 - スラッシュコマンドへの言及
+{{#if hasPiecePreview}}
+
+## ピース構成
+
+このタスクは以下のワークフローで処理されます:
+{{pieceStructure}}
+
+### エージェント詳細
+
+以下のエージェントが順次タスクを処理します。各エージェントの能力と指示内容を理解し、指示書の質を高めてください。
+
+{{movementDetails}}
+
+### 委譲ガイダンス
+
+- 上記エージェントが自ら調査・判断できる内容は、指示書に過度な詳細を含める必要はありません
+- エージェントが自力で解決できない情報（ユーザーの意図、優先度、制約条件など）を指示書に明確に含めてください
+- コードベースの調査、実装詳細の特定、依存関係の解析はエージェントに委ねてください
+{{/if}}

src/shared/prompts/ja/score_summary_system_prompt.md

@@ -1,7 +1,7 @@
 <!--
   template: score_summary_system_prompt
   role: system prompt for conversation-to-task summarization
-  vars: pieceInfo, pieceName, pieceDescription, conversation
+  vars: pieceInfo, pieceName, pieceDescription, movementDetails, conversation
   caller: features/interactive
 -->
 あなたはTAKTの対話モードを担当しています。これまでの会話内容を、ピース実行用の具体的なタスク指示書に変換してください。
@@ -25,6 +25,7 @@
 ## あなたが作成する指示書の行き先
 このタスク指示書は「{{pieceName}}」ピースに渡されます。
 ピースの内容: {{pieceDescription}}
+{{movementDetails}}
 
 指示書は、このピースが期待する形式で作成してください。
 {{/if}}