- docs/archive/: superseded guides; the repository history keeps them
and no live doc links into the directory. The one open document in it,
WEB_UI_AUDIT_2026-09.md, moves to docs/audits/ and is linked from the
docs index.
- PLUGIN_IMPLEMENTATION_SUMMARY.md invented usage statistics, called
v2.0.0 current, listed shipped auto-updates as future work and
documented a BasePlugin.get_config() that does not exist.
- docs/README.md: drop both, and stop telling contributors to archive
obsolete pages instead of deleting them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>