DidYouLearn v0.1.0

First public alpha of DidYouLearn, a provider-neutral, outcome-based evaluation lab for AI tutors. Includes the no-API browser study, six cross-domain task packs, deterministic assignment, correctness gates, mastery/transfer/retention scoring, confidence calibration, integrity receipts, privacy filtering, offline reports, full research documentation, and explicitly fictional demo data. No commercial-model ranking is claimed in this release.