The physical-key probe promoted only the eight navigation chords, so a layout-claimed right Ctrl (Canadian Multilingual Standard, which strips the ctrl flag) still could not reach the letter shortcuts: ^R (chat retry, atlas rebuild) and ^P (chat paths). A bare r/p typed while the right Ctrl is physically held now promotes to retry/paths via _CTRL_LETTER_CHORDS. It is safe because a genuine third-level character arrives as a different glyph and is never in the map; a layout that swallows the key makes this a harmless no-op.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>