chore: upgrade to react 19 beta and next 14 canary

hooks/use-sidebar.tsx

@@ -0,0 +1,57 @@
+"use client";
+
+import { createContext, ReactNode, useContext, useEffect, useState } from "react";
+
+const LOCAL_STORAGE_KEY = "sidebar";
+
+interface SidebarContext {
+  isSidebarOpen: boolean;
+  toggleSidebar: () => void;
+  isLoading: boolean;
+}
+
+// eslint-disable-next-line @typescript-eslint/no-redeclare
+const SidebarContext = createContext<SidebarContext | undefined>(undefined);
+
+export function useSidebar() {
+  const context = useContext(SidebarContext);
+  if (!context) {
+    throw new Error("useSidebarContext must be used within a SidebarProvider");
+  }
+  return context;
+}
+
+interface SidebarProviderProps {
+  children: ReactNode;
+}
+
+export function SidebarProvider({ children }: SidebarProviderProps) {
+  const [isSidebarOpen, setSidebarOpen] = useState(true);
+  const [isLoading, setLoading] = useState(true);
+
+  useEffect(() => {
+    const value = localStorage.getItem(LOCAL_STORAGE_KEY);
+    if (value) {
+      setSidebarOpen(JSON.parse(value) as boolean);
+    }
+    setLoading(false);
+  }, []);
+
+  const toggleSidebar = () => {
+    setSidebarOpen(value => {
+      const newState = !value;
+      localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(newState));
+      return newState;
+    });
+  };
+
+  if (isLoading) {
+    return null;
+  }
+
+  return (
+    <SidebarContext.Provider value={{ isSidebarOpen, toggleSidebar, isLoading }}>
+      {children}
+    </SidebarContext.Provider>
+  );
+}