- forward refs through ScrollArea so logs can access the viewport
- keep logs pinned to the bottom only when the user is already near it
- apply import and className ordering cleanup across frontend components
- add backend APIs for searching and installing registry skills, including origin metadata and concurrency-safe workspace writes
- introduce /agent/hub as the default agent entry with marketplace search and install UI
- refactor the skills and tools pages with filtering, dialogs, detail views, import validation, and updated i18n
- expand backend tests for search, install, import, rollback, and concurrent requests
