fix(mobile): close safe-area gaps and lift sub-44px tap targets

Subtract both the top and bottom safe-area insets from the full-page
Coach height so the composer no longer slides behind the bottom-nav on a
notched phone, and pad the Coach drawer composer and the ResponsiveSheet
bottom-sheet footer for the home-indicator band.

Raise the cycle and illness day-log severity controls to a 44px touch
floor, add hit-slop to the custom-symptom remove button, give the shared
day-log chips a min height, and let the mood-tag action cluster wrap so a
360px row no longer clips the tag name.

src/components/ui/responsive-sheet.tsx

@@ -180,7 +180,7 @@ export function ResponsiveSheet({
           {footer ? (
             <SheetFooter
               data-slot="responsive-sheet-footer"
-              className="border-border/70 bg-background/95 supports-[backdrop-filter]:bg-background/80 sticky bottom-0 mt-0 flex-row justify-end gap-2 border-t p-4 backdrop-blur"
+              className="border-border/70 bg-background/95 supports-[backdrop-filter]:bg-background/80 sticky bottom-0 mt-0 flex-row justify-end gap-2 border-t p-4 pb-[calc(env(safe-area-inset-bottom,0px)+1rem)] backdrop-blur"
             >
               {footer}
             </SheetFooter>