feat: initial auth provider

src/providers/AuthProvider.tsx

@@ -0,0 +1,29 @@
+import { signal, Signal } from "@preact/signals";
+import { createContext, JSX } from "preact";
+import { useContext } from "preact/hooks";
+
+interface AppContextValue {
+  isLoggedIn: Signal<boolean>;
+}
+
+const AppContext = createContext<AppContextValue>({
+  isLoggedIn: signal(false),
+});
+
+const AppProvider = ({ children }: { children: JSX.Element }) => {
+  const value: AppContextValue = {
+    isLoggedIn: signal(false),
+  };
+
+  return <AppContext.Provider value={value}>{children}</AppContext.Provider>;
+};
+
+const useAppContext = () => {
+  const context = useContext(AppContext);
+  if (!context) {
+    throw new Error("useAppContext must be used within AppProvider");
+  }
+  return context;
+};
+
+export { AppProvider, useAppContext };