- centralize web search provider readiness and resolution logic
- fall back when the configured provider is unavailable or invalid
- allow native-search-capable models to use built-in search without the client tool
- simplify the tools page and add direct access to web search settings
- add backend, agent, and integration tests for the new selection behavior
- split the tools page into focused components and a shared hook
- add separate Tool Library and Web Search tabs
- refresh web search settings layout and localized copy
- make provider expansion keyboard accessible
- restore wrapping for long tool names in library cards
- allow custom styling for KeyInput
- 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
