style: apply consistent page header pattern across all admin routes
- Replace text-2xl font-bold with text-xl font-semibold in all page headers
- Replace bg-[#fd6216] orange buttons with bg-[#0a1d37] navy buttons
- Wrap all pages in -mx-6 -mt-6 flex flex-col layout for edge-to-edge headers
- Replace .field/.actions CSS classes with explicit Tailwind utility classes
- Apply data-table/table-card shared CSS classes to remaining list pages
- Remove duplicate tab bar from roles/index.tsx (AdminShell TAB_SETS handles it)
- Move Create Internal Role button to page header in roles/index.tsx
Pages updated: applications, modules, responses, verification-status,
company/create, company/[id], employees/[id]/edit, users/[id]/edit,
users/details/[id], roles/index, roles/[id]/index, roles/[id]/edit,
role-ui-configs, runtime-roles/[roleKey], onboarding-schemas/*,
external/internal-dashboard-management, approval/[id], approval,
jobs/[id], leads/[id], photographer/[id], requirements/[id],
kb/articles/[id], kb/articles/[id]/edit, verification/[id],
verification-status/[id], help/[id], help/support-bridge
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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