Polish mobile app for App Store review and expand CRUD.

Default to beenvoice.soconnor.dev with server settings hidden behind Advanced; add Entities tab with clients/businesses, invoice creation, UI fixes for dashboard layout, date fields, FAB position, and card-matched button radius.

Co-authored-by: Cursor <cursoragent@cursor.com>

components/ui/Button.tsx

@@ -77,7 +77,7 @@ export function Button({
 const styles = StyleSheet.create({
   base: {
     minHeight: 40,
-    borderRadius: radii.md,
+    borderRadius: radii.lg,
     alignItems: "center",
     justifyContent: "center",
     paddingHorizontal: spacing.md,