chore(Item 11): drop duplicate .md docs (RSR-canonical .adoc retained) (#106)

Dedupe: keep RSR-canonical .adoc, drop verified-faithful .md duplicate.
Day 10 / Item 11. Inbound links repointed to .adoc where applicable.

Co-authored-by: hyperpolymath <hyperpolymath@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

Author: hyperpolymath