Create Strategy (MicroStrategy) unstructured-data sources (nuggets) from local files — including PowerPoint decks, which are auto-converted to Markdown first. Use when the user says "create unstructured data", "upload a document/deck/PDF to Strategy", "make this file available to the Auto Agent / AI", or drops a pptx/pdf/docx/md/txt file destined for a Strategy project. Wraps POST /api/nuggets?type=unstructuredData plus status polling via scripts/create_unstructured.py and the stdlib PPTX text extractor scripts/pptx_to_md.py.
