chore: bump version to v2026.4.318 and update changelog}
- Bump package version from v2026.4.316 to v2026.4.318
- Update p3x-redis-ui-material dependency from ^2026.4.315 to ^2026.4.317
- Update p3x-redis-ui-server dependency from ^2026.4.301 to ^2026.4.302
- Remove obsolete AngularJS CVE documentation (artifacts/readme/angularjs.md)
- Add v2026.4.318 changelog entry documenting AngularJS CVE removal, CodeMirror editor update, yarn upgrade build fix, and AGENTS.md additions
- Update build version footer across all documentation and changelog files