fix: Global/ProjectのmodelがModelログに反映されない不具合を修正 (#417)

* test: add regression for movement model log fallback

* fix: use configured model for movement model logging

src/__tests__/pieceExecution-session-loading.test.ts

@@ -155,8 +155,20 @@ vi.mock('../shared/exitCodes.js', () => ({
 }));
 
 import { executePiece } from '../features/tasks/execute/pieceExecution.js';
+import { resolvePieceConfigValues } from '../infra/config/index.js';
 import { info } from '../shared/ui/index.js';
 
+const defaultResolvedConfigValues = {
+  notificationSound: true,
+  notificationSoundEvents: {},
+  provider: 'claude',
+  runtime: undefined,
+  preventSleep: false,
+  model: undefined,
+  observability: undefined,
+  analytics: undefined,
+};
+
 function makeConfig(): PieceConfig {
   return {
     name: 'test-piece',
@@ -178,6 +190,7 @@ function makeConfig(): PieceConfig {
 describe('executePiece session loading', () => {
   beforeEach(() => {
     vi.clearAllMocks();
+    vi.mocked(resolvePieceConfigValues).mockReturnValue({ ...defaultResolvedConfigValues });
     mockLoadPersonaSessions.mockReturnValue({ coder: 'saved-session-id' });
     mockLoadWorktreeSessions.mockReturnValue({ coder: 'worktree-session-id' });
   });
@@ -261,6 +274,20 @@ describe('executePiece session loading', () => {
     expect(mockInfo).toHaveBeenCalledWith('Model: (default)');
   });
 
+  it('should log configured model from global/project settings when movement model is unresolved', async () => {
+    vi.mocked(resolvePieceConfigValues).mockReturnValue({
+      ...defaultResolvedConfigValues,
+      model: 'gpt-4.1',
+    });
+
+    await executePiece(makeConfig(), 'task', '/tmp/project', {
+      projectCwd: '/tmp/project',
+    });
+
+    const mockInfo = vi.mocked(info);
+    expect(mockInfo).toHaveBeenCalledWith('Model: gpt-4.1');
+  });
+
   it('should log provider and model per movement with overrides', async () => {
     await executePiece(makeConfig(), 'task', '/tmp/project', {
       projectCwd: '/tmp/project',

src/features/tasks/execute/pieceExecution.ts

@@ -339,6 +339,7 @@ export async function executePiece(
   const shouldNotifyPieceComplete = shouldNotify && notificationSoundEvents?.pieceComplete !== false;
   const shouldNotifyPieceAbort = shouldNotify && notificationSoundEvents?.pieceAbort !== false;
   const currentProvider = globalConfig.provider;
+  const configuredModel = options.model ?? globalConfig.model;
   if (!currentProvider) {
     throw new Error('No provider configured. Set "provider" in ~/.takt/config.yaml');
   }
@@ -453,7 +454,7 @@ export async function executePiece(
   let lastMovementName: string | undefined;
   let currentIteration = 0;
   let currentMovementProvider = currentProvider;
-  let currentMovementModel = globalConfig.model ?? '(default)';
+  let currentMovementModel = configuredModel ?? '(default)';
   const phasePrompts = new Map<string, string>();
   const movementIterations = new Map<string, number>();
   let engine: PieceEngine | null = null;
@@ -552,7 +553,9 @@ export async function executePiece(
     });
     out.info(`[${iteration}/${pieceConfig.maxMovements}] ${step.name} (${step.personaDisplayName})`);
     const movementProvider = providerInfo.provider ?? currentProvider;
-    const movementModel = providerInfo.model ?? '(default)';
+    const movementModel = providerInfo.model
+      ?? (movementProvider === currentProvider ? configuredModel : undefined)
+      ?? '(default)';
     currentMovementProvider = movementProvider;
     currentMovementModel = movementModel;
     providerEventLogger.setMovement(step.name);