Refactor error logging in database functions for consistency and clarity

app/core/database.py

@@ -24,12 +24,13 @@ engine: AsyncEngine = create_async_engine(
 
 
 async def get_db() -> AsyncGenerator[AsyncSession, None]:
+    """Get a database session for dependency injection."""
     logger = get_logger(__name__)
     async with AsyncSession(engine) as session:
         try:
             yield session
-        except Exception as e:
-            logger.exception("Database session error: %s", e)
+        except Exception:
+            logger.exception("Database session error")
             await session.rollback()
             raise
         finally:
@@ -37,12 +38,13 @@ async def get_db() -> AsyncGenerator[AsyncSession, None]:
 
 
 async def init_db() -> None:
+    """Initialize the database and create tables if they do not exist."""
     logger = get_logger(__name__)
     try:
         logger.info("Initializing database tables")
         async with engine.begin() as conn:
             await conn.run_sync(SQLModel.metadata.create_all)
         logger.info("Database tables created successfully")
-    except Exception as e:
-        logger.exception("Failed to initialize database: %s", e)
+    except Exception:
+        logger.exception("Failed to initialize database")
         raise