MagAgent 0.32.6

MagAgent 0.32.6 improves document/deck creation after real CLI testing. It adds native create_docx and create_pptx tools so Word documents and PowerPoint presentations are created directly instead of by generating and debugging temporary Python scripts. It also declares python-pptx as a required dependency, includes Office artifact tools in file mutation tracking and the files capability pack, and shortens streamed max-round stop diagnostics.\n\nValidation: ruff check src tests, pytest -q, magent docs doctor, python -m build, and twine check all passed.