chore(release): bump version to v2026.4.802 and update changelog}
- Bump version from v2026.4.801 to v2026.4.802 in package.json and all docs - Add v2026.4.802 changelog entry with new features and bugfixes - Document editing safety features in README: diff view before save and undo after save - Document dashboard info cards on Pulse page (server, persistence, replication, keyspace, modules) - Update Pulse export description to include dashboard info and Export All ZIP bundle - Bump p3x-redis-ui-material dependency from ^2026.4.421 to ^2026.4.422 - Add diff ^8.0.4 as new dependency for p3x-redis-ui-material - Update build version footer across all markdown files