dac2ea4335
UI_ShowSetTimePage() cleared and redrew the entire screen on every 500ms blink toggle and on every up/down value change, causing a full-screen flash instead of just the intended hour/minute digit blinking. Split out UI_UpdateSetTimeDigit() which only repaints the 32x32px digit region for the field being edited; the full page draw is now only used on entry. Field-switch (long-press CONFIRM) refreshes both digit regions to clear any stale blanked-out state.