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

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

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: hyperpolymath