feat: add confluence/slack search tools, chat history, cloud Qdrant support, sync trigger fixes

fix: type errors, merge OAuth branch, upgrade BM25Store

feat: enhance UI state management with graph collapse functionality and improve error handling in API requests

feat: implement sidebar component with navigation and recent queries

Fix force-graph mount: use ForceGraph2D()(element) not ForceGraph2D(element)

Fix graph panel race: push pending data after force-graph async init

feat: add Zustand stores for filters and UI state management