MateProbe and historical package names

MateProbe by Mate4B is the current project. Since 0.1.0a4, install mateprobe and optionally pytest-mateprobe, import mateprobe, and use the mateprobe CLI and pytest fixture with --mateprobe-report. See the migration guide for complete commands.

The controlled comparison and historical-validator studies were recorded with narrative-contracts==0.1.0a3. Their source snapshots, protocol files and reports retain that distribution name and narrative_contracts imports. These are historical identifiers, not instructions for current application integrations.

The study reproduction guide separates byte-for-byte a3 replay from a4 compatibility replay. No frozen corpus, observation, label or report is renamed or regenerated to make migration checks pass.