- Update all UI snapshots to synchronize with the new 'compact' default and minor layout tweaks.
- Update legacy UI regression tests to explicitly disable 'enableCompactToolOutput' to verify boxed layout behavior (overflows, sticky headers).
- Refactor 'useGeminiStream.test.tsx' to resolve TypeErrors and use consistent mock settings supporting the new UI options.
- Fix EPERM failures by using 'os.tmpdir()' in a2a-server and CLI theme tests to resolve macOS Seatbelt issues.