- Add KB agent fallback support in useQuickChat and allow switching sessions by agent plus model override
- Introduce session target key matching so same target reloads messages while different model selections create distinct sessions
- Update QuickChatFAB to lazy-load models, show model override UI, and keep quick chat usable for model-only conversations
- Add and expand hook/component tests to cover model selection flows, KB session creation, and default-model reset behavior
- Add showQuickChatFAB boolean setting to ProjectSettings type
- Add useAppSettings hook function for accessing the setting
- Wire QuickChatFAB visibility in App.tsx based on setting
- Hide QuickChatFAB in MobileNavBar when setting is false
- Add Settings UI toggle for the new setting
- Add CSS for hiding QuickChatFAB on mobile when disabled
- Add comprehensive tests for all affected components
- Fix QuickChatFAB onOpenChange test to use controlled mode
- Update settings reference documentation
- Add QuickChatFAB component with agent selection, conversation loading, and inline send actions
- Support panel open/close interactions including close button, Escape key, and outside-click dismissal
- Integrate the quick chat FAB into App so it appears in project view with project-scoped API calls
- Add comprehensive QuickChatFAB tests and style rules for FAB, chat panel, message bubbles, and responsive behavior
