v5.4.0

🎉 New Features (9 items)

1. Mermaid diagram support across the application (#1373) @daisuke-awaji
2. Math rendering support with rehype-katex and remark-math (#1375) @daisuke-awaji
3. Agent Builder (#1291) @maekawataiki
4. Bulk delete conversation history (#1351) @lastshogun13
5. Branding customization for logo and title (#1339) @kazuhitogo
6. Nemotron 3 Nano 30b added (#1398) @kazuhitogo
7. 17 new models added (#1368) @maekawataiki
8. Opus 4.5 support (#1362) @kazuhitogo
9. Meeting minutes recording protection (#1340) @ShotaroKataoka

🐛 Bug Fixes (7 items)

10. Fix reference to weak reference (#1389) @maekawataiki
11. Close inter-use-case demo popup when navigating away (#1355) @hide-G
12. Uppercase file extension support (#1388) @kazuhitogo
13. Use case builder PDF reading fix (#1377) @kazuhitogo
14. Remove invalid maxHeight prop from ModalSystemContext (#1374) @daisuke-awaji
15. Fix: Non-Claude models cannot be used in AgentCore (#1347) @keykbd
16. Fix typo: "speach" should be "speech" (#1354) @hide-G

🔧 Internal Improvements & Refactoring (11 items)

17. PR Review auto-deploy feature (#1406) @Sugi275
18. PR Review auto-deploy feature (#1404) @Sugi275
19. PR Review auto-deploy feature (#1403) @Sugi275
20. PR Review auto-deploy GitHub Actions (#1402) @Sugi275
21. AgentCore improvement - Faster MCP Load, Gateway Support (#1378) @maekawataiki
22. Add default model (#1380) @maekawataiki
23. Skip bundling for snapshot test (#1379) @maekawataiki
24. Agent builder auto generate prompt (#1372) @daisuke-awaji
25. Add destroy.sh script for easy deletion (#1366) @icoxfog417
26. Add "cdk:diff" shortcut to package.json (#1342) @knziiy
27. Marketplace permission addition for automatic model access (#1336) @Sugi275

📦 Dependency Updates (2 items)

28. Bump js-yaml from 3.14.1 to 3.14.2 in /browser-extension (#1357) @dependabot[bot]
29. Bump vite from 6.3.6 to 6.4.1 in /browser-extension (#1335) @dependabot[bot]

📝 Documentation & Others (1 item)

30. Add case study (#1370) @Calic0Cat