Add @mantine/hooks dependency and update PlaygroundChat component

src/store/web.tsx

@@ -1,15 +0,0 @@
-import { create } from "zustand"
-
-type State = {
-  state: "searching" | "clicked" | "embeddings" | "done"
-  text: string
-  setText: (text: string) => void
-  setState: (state: "searching" | "clicked" | "embeddings" | "done") => void
-}
-
-export const useWebSearch = create<State>((set) => ({
-  state: "searching",
-  text: "Searching Google",
-  setText: (text) => set({ text }),
-  setState: (state) => set({ state })
-}))