Fix stat label truncation on smaller screens

- Add fixedSize to stat label to allow text wrapping
- Expand stat box to full width for better text flow

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

iosApp/iosApp/Onboarding/OnboardingValuePropsView.swift

@@ -208,9 +208,11 @@ struct FeatureCard: View {
                     .font(.caption)
                     .foregroundColor(Color.appTextSecondary)
                     .multilineTextAlignment(.center)
+                    .fixedSize(horizontal: false, vertical: true)
             }
             .padding(.horizontal, AppSpacing.lg)
             .padding(.vertical, AppSpacing.md)
+            .frame(maxWidth: .infinity)
             .background(
                 RoundedRectangle(cornerRadius: AppRadius.lg)
                     .fill(Color.appBackgroundSecondary)