Proof v0.1.0 — first public release

The complete v1 arc plus the Insight & Identity milestone: xAPI statement ingest on Cloudflare Workers + D1, the p.js snippet with identity modes, a teacher dashboard (completion rate, drop-off funnel, learner timelines, keys, CSV/JSON export) in the riso-paper theme, one-click Deploy to Cloudflare, llms.txt for AI builders, and a Playwright + axe zero-violation accessibility gate.

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