Cyd's 9-commit branch, reviewed before merge (clean merge-tree, zero overlap
with the console/relay work that landed after his fork point; his L4VB16 refit
preserves the #48 plane-audit tripwires, and his lamp-decode fix corrects the
#47 flash rendering). Four review findings are fixed in the follow-up commit:
the stale README controls table, the unguarded backtick view-toggle, the
environ.ini one-shot loophole, and volume-key documentation (the -/= -> PgUp/
PgDn move itself landed pre-merge so this branch's Comm-bank -/= bindings are
collision-free).
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>