chore(Item 11): drop duplicate .md docs (RSR-canonical .adoc retained) (#79)

Day 10 / Item 11 (estate `.md`->`.adoc` dedupe). Removes duplicate doc
files
where the `.adoc` counterpart was verified a faithful superset (0
`.md`-only
content tokens; vocabulary coverage >=93%). The `.adoc` is the
RSR-canonical
format. Inbound links that resolved to the removed file(s) are repointed
to
`.adoc`. No content lost. Audit basis: Estate Debt Recovery Day 10.

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

Author: hyperpolymath

consent-aware-http/CHANGELOG.md

@@ -241,5 +241,5 @@ Commercial use with attribution is permitted. Proprietary AI training without at
 * link:CONTRIBUTING.adoc[Contributing Guide]
 * link:CODE_OF_CONDUCT.adoc[Code of Conduct]
 * link:SECURITY.md[Security Policy]
-* link:CHANGELOG.md[Changelog]
+* link:CHANGELOG.adoc[Changelog]
 * link:FUTURE.adoc[Future Roadmap]