style: Apply code formatting with go fmt

- Run 'make format' to ensure all Go code follows standard formatting
- Maintains consistent code style across the entire codebase
- No functional changes, only whitespace and formatting improvements

internal/database/test_helpers.go

@@ -33,4 +33,4 @@ func setupTestDatabase(t *testing.T) (*Database, func()) {
 	}
 
 	return db, cleanup
-}
+}