Track which chapters you've studied and which have been updated since. Per-chapter git commit + last-modified date is generated at build time; your studied-state stays in browser localStorage. Read-only against the source content; no telemetry.
Versioning is per-commit. Any chapter touched by a typo fix counts as “updated”. Open the chapter and use the commit message to judge whether re-reading is warranted — not every diff is worth the time.
Browser-only. Your studied state lives in localStorage under the key nexus_chapter_studied_v1. If you switch browsers or clear site data, this dashboard goes blank. There is no account, no sync, no server-side record.
Not a verifiable credential. This is “I clicked a button after reading” honesty, not cryptographic content provenance. For real provenance, see the DID/VC demo.
This tool reads ../data/chapter_versions.json from the same origin and stores your studied-state under the localStorage key nexus_chapter_studied_v1. No telemetry, no third-party requests, no server-side record.