Add waiting system application files

- Add main application files (main.py, models.py, schemas.py, etc.)
- Add routers for all features (waiting, attendance, members, etc.)
- Add HTML templates for admin and user interfaces
- Add migration scripts and utility files
- Add Docker configuration
- Add documentation files
- Add .gitignore to exclude database and cache files

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

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

migrate_add_closing_action.py

@@ -0,0 +1,31 @@
+from sqlalchemy import create_engine, text
+from database import SQLALCHEMY_DATABASE_URL as DATABASE_URL
+import os
+
+# 데이터베이스 파일 경로 설정
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+DB_PATH = os.path.join(BASE_DIR, "waiting_system.db")
+DATABASE_URL = f"sqlite:///{DB_PATH}"
+
+def migrate():
+    engine = create_engine(DATABASE_URL)
+    
+    with engine.connect() as conn:
+        print("Checking store_settings table...")
+        
+        # closing_action 컬럼 확인
+        try:
+            result = conn.execute(text("SELECT closing_action FROM store_settings LIMIT 1"))
+            print("closing_action column already exists.")
+        except Exception:
+            print("Adding closing_action column...")
+            try:
+                # SQLite에서는 ALTER TABLE로 컬럼 추가 가능
+                conn.execute(text("ALTER TABLE store_settings ADD COLUMN closing_action VARCHAR DEFAULT 'reset'"))
+                conn.commit()
+                print("Successfully added closing_action column.")
+            except Exception as e:
+                print(f"Error adding column: {e}")
+
+if __name__ == "__main__":
+    migrate()