date and datetime were overlapping with created. Only created is now
read by the scanner and emitted in search.json; modified is also
included in search.json output alongside it.
https://claude.ai/code/session_013A4egzphocyto9bvZ76dxf
Updated project documentation for MD-CMS, including changes to the CLI tool description, repository layout, and version markers. Adjusted folder names and clarified local preview instructions.