famapp/src/components/app-shell.tsx

import { headers } from "next/headers";
import type { NavStyle } from "@/modules/_core/themes";
import type { DashboardMeta } from "@/app/d/actions";
import { Sidebar } from "@/components/sidebar";
import { Topbar } from "@/components/topbar";
import { BottomNav } from "@/components/bottom-nav";
import { NavModeProvider } from "@/components/nav-mode-provider";

const BARE_PREFIXES = ["/s/", "/login"];

interface Props {
  signedIn: boolean;
  navStyle: NavStyle;
  dashboards: DashboardMeta[];
  children: React.ReactNode;
}

export async function AppShell({ signedIn, navStyle, children }: Props) {
  const h = await headers();
  const pathname = h.get("x-pathname") ?? "";
  const bare = BARE_PREFIXES.some(
    (p) => pathname === p || pathname.startsWith(p + "/") || pathname === p.replace(/\/$/, ""),
  );

  if (bare || !signedIn) {
    // No shell — share viewer and signed-out pages render bare.
    // html/body are overflow:hidden for the app grid; bare pages need their own scroller.
    return <div className="bare-scroll">{children}</div>;
  }

  const useTopVariant = navStyle === "top-nav";

  return (
    <div className="app">
      {useTopVariant ? <Sidebar variant="top" /> : <Sidebar variant="side" />}
      <main className="main">
        <Topbar />
        <div className="scroll-area">{children}</div>
      </main>
      <BottomNav />
      <NavModeProvider navStyle={navStyle} />
    </div>
  );
}