docs: maintainer edits to .claude/CLAUDE.md (3 staleness sites) #56

(a) line ~46 BANNED table still says Julia/Rust/ReScript (leftover from PR #49); (b) "Fallback: Nix (flake.nix)" stale — flake.nix removed by the estate wave (PR #55); (c) "Guile Scheme — State/meta files" row describes .a2ml files. Guardrail-protected file.

https://claude.ai/code/session_01GJatEm2TVFSTBEkKXmserJ