v178
Base: v174 = v167 renderer/control + Parameters / Stars names.

Different fix from v175-v177:
- does NOT parse activePage again
- uses v167's EXISTING proven Parameters-page active signal (object 51)
- remembers current Sustain state
- while Parameters is active, re-sends Sustain Off/On every 300ms
- stops the refresh immediately when leaving Parameters

No info-bar commands added.
No OLED drawing/clear/flip changes.
No Stars renderer changes.
Audio/AUX/LED untouched.
