refactor: replace console.log with createLogger in services

- Update feature-loader.ts to use logger.info instead of console.log
- Update dev-server-service.ts to use createLogger for all logging
- Update terminal-service.ts to use createLogger for all logging
- Update agent-service.ts to use createLogger for all logging
- Fix agent-service.test.ts mock to preserve actual createLogger

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/server/tests/unit/services/agent-service.test.ts

@@ -9,7 +9,15 @@ import { collectAsyncGenerator } from '../../utils/helpers.js';
 
 vi.mock('fs/promises');
 vi.mock('@/providers/provider-factory.js');
-vi.mock('@automaker/utils');
+vi.mock('@automaker/utils', async () => {
+  const actual = await vi.importActual('@automaker/utils');
+  return {
+    ...actual,
+    readImageAsBase64: vi.fn(),
+    buildPromptWithImages: vi.fn(),
+    loadContextFiles: vi.fn(),
+  };
+});
 
 describe('agent-service.ts', () => {
   let service: AgentService;