- Add startFreshSession to useQuickChat so users can explicitly create a new persisted session for the current agent/model target
- Refactor session creation into a shared helper and track current session target to support fresh-thread creation without changing selection
- Add a New chat action to the QuickChatFAB header that starts a fresh thread while preserving active model/agent context
- Update quick chat hook/component tests to verify new-session behavior and message streaming targets
- Add header action styling for the new quick-chat controls
- Rename core loader, dashboard server chat/planning routes, and frontend agent IDs/storage keys from kb-agent to fn-agent naming
- Update dashboard hooks and components (agent list, chat view, quick chat) to use the new fn agent key prefixes consistently
- Refresh engine, dashboard, core, and CLI tests/mocks to remove remaining kb-agent route and temp prefix references
- Update storage/gap-analysis docs to reflect fn agent key names and add a @gsxdsm/fusion patch changeset for the rename
- Trigger onError for unexpected AbortError failures in streamChatResponse while ignoring user-initiated closes
- Keep quick chat user messages on send errors, reset streaming state, and reload messages from the server
- Persist partial assistant output (including thinking-only fallbacks) when AI processing fails mid-stream
- Add regression coverage for stream abort handling, quick chat error UX, and partial-response persistence
- Make useChat and useQuickChat sendMessage synchronous and update consumers to call it without awaiting
- Allow ChatView and QuickChatFAB inputs to remain editable while responses stream
- Keep quick chat send disabled during active streaming to prevent concurrent sends
- Add hook and component tests for synchronous sendMessage and non-blocking input behavior
- Add explicit agent/model mode toggles to QuickChatFAB and NewChatDialog
- Update session target logic so model mode starts chats with the KB agent while agent mode uses selected agents
- Clear opposite selections when switching modes and adjust placeholders/disabled states to match active mode
- Expand ChatView and QuickChatFAB tests to cover toggle visibility, mode switching, and session payload behavior
- Add useQuickChat coverage to verify agent-only switchSession calls omit model parameters
- 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
