debug: log DATA_DIR and database path at startup

backend/main.py

@@ -9,6 +9,9 @@ from .routers import items, operations, users, categories
 from .logger import log
 
 # Create the database tables
+from .database import DATA_DIR, db_path
+log.info(f"Using DATA_DIR: {DATA_DIR}")
+log.info(f"Database path: {db_path}")
 models.Base.metadata.create_all(bind=engine)
 log.info("Database tables verified.")