Polished new look for interview status pages
Features
Redesigned interview status pages: polished cards replace the old emoji-based error screens, and invalid URLs now redirect to a dedicated marketing page instead of a dead end.
Improvements
The top nav, sidebar, and footer now show the full set of roles and industries from the central use cases directory instead of a hardcoded subset.
Fixes
"My perspectives" filter now correctly returns research for users with multiple emails, and deleted items disappear from the list immediately.