- Fix remaining line length issues in prompt_splitter_node.py and tests - Add missing docstring for INPUT_TYPES method - Fix import order to follow standard (stdlib, third-party, local) - Fix variable redefinition by using json_module alias - Add docstrings to test classes - Improve code readability and maintainability Linter score: 8.89/10 → 8.98/10 (+0.09)