fix: correct import paths and add missing protocol files for DDD structure

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/shared/logger/index.ts

@@ -1,3 +1,4 @@
-import logger from '../../utils/logger';
-
-export { logger };
+import _logger from "../../utils/logger";
+export default _logger;
+export { _logger as logger };
+export type { Logger } from "winston";