feat: Sprint 5 - Toast, ConfirmDialog, EmptyStates, Settings, Export/Import, Accessibility (TERLOG-52/53/54/55/56/57/58/59)

components/ui/Button.tsx

@@ -26,6 +26,10 @@ export function Button({ label, onPress, variant = 'primary', loading, disabled
       className={`${base} ${variants[variant]} ${disabled || loading ? 'opacity-50' : ''}`}
       onPress={onPress}
       disabled={disabled || loading}
+      accessibilityRole="button"
+      accessibilityLabel={label}
+      accessibilityState={{ disabled: !!(disabled || loading) }}
+      style={{ minHeight: 52 }}
     >
       {loading ? (
         <ActivityIndicator color={variant === 'secondary' ? '#1A6B72' : 'white'} />