BFF fixes:
- Fix pino-http type import by using Params from nestjs-pino
- Use Prisma-generated AuditAction enum instead of local duplicate
- Add null check for sfAccountId in mapping mapper
Portal mobile UX improvements:
- DataTable: Add responsive card view for mobile with stacked layout
- Header: Increase touch targets to 44px minimum, better spacing
- PageLayout: Optimize padding and make breadcrumbs scrollable
- PublicShell: Add iOS safe area support, slide animation, language
switcher and sign-in button visible in mobile header
Also removes "Trusted by Leading Companies" section from AboutUsView.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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