Initial commit: Dabit Time Manager project

Python-based time management application with UDP discovery,
TCP protocol communication, time sync, and drift monitoring.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

main.py

@@ -0,0 +1,18 @@
+"""RTC Time Drift Tester - 앱 진입점"""
+
+import sys
+import os
+
+# 프로젝트 루트를 모듈 검색 경로에 추가
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+from gui.app import App
+
+
+def main():
+    app = App()
+    app.run()
+
+
+if __name__ == "__main__":
+    main()