feat: global login dialog with useRequireAuth hook for 401 auth gating

components/global-login-dialog.tsx

@@ -0,0 +1,9 @@
+"use client"
+
+import { LoginDialog } from "@/components/login-dialog"
+import { useLoginDialogStore } from "@/store/login-dialog"
+
+export function GlobalLoginDialog() {
+  const { open, closeLoginDialog } = useLoginDialogStore()
+  return <LoginDialog open={open} onOpenChange={(v) => !v && closeLoginDialog()} />
+}