* Add missing void parameter declarations to *_light functions
* Add doro67/multi:konstantin keymap
* Allow FNLK to be canceled with Esc
* Function layer → Fn layer in keymap comments
* Enable Fn layer tap dances only if LAYER_FN is defined
* Update KBD6X keymap spacing to match LAYOUT spacing
* Add regular FNLK to userspace, update keymap comment labels
* Rename KC_BRK → BREAK, KC_SYSR → SYSRQ in userspace
* Change mousekey positions in KBD6X
* Disable Console in KBD6X to reduce firmware size
* Return false in process_record_* only when overriding existing keys
* Fix Caps light not working after LSFT_FN
* Refactor Fn/Caps light, fix sequencing issues
