Fix admin sidebar missing on /curator/* routes

- Extract AdminShell component (sidebar + wrapper)
- admin/layout.tsx uses AdminShell
- curator/layout.tsx uses AdminShell for admin role (was rendering children only)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/admin/layout.tsx

@@ -1,55 +1,12 @@
 import { headers } from "next/headers";
 import { auth } from "@/lib/auth";
 import { redirect } from "next/navigation";
-import { AdminNav } from "@/components/admin/admin-nav";
+import { AdminShell } from "@/components/admin/admin-shell";
-import { LogoutButton } from "@/components/layout/logout-button";
 
 export default async function AdminLayout({ children }: { children: React.ReactNode }) {
   const session = await auth.api.getSession({ headers: await headers() });
   if (!session) redirect("/login");
   if (session.user.role !== "admin") redirect("/dashboard");
 
-  return (
+  return <AdminShell userName={session.user.name}>{children}</AdminShell>;
-    <div className="min-h-screen flex">
-      {/* Sidebar */}
-      <aside
-        className="w-52 flex flex-col shrink-0 fixed h-full z-10"
-        style={{ backgroundColor: "var(--sidebar-bg)", color: "var(--sidebar-text)" }}
-      >
-        {/* Logo */}
-        <div
-          className="px-5 py-5"
-          style={{ borderBottom: "2px solid var(--sidebar-border)" }}
-        >
-          <p className="font-bold text-base tracking-wide" style={{ color: "#E8F0D8" }}>
-            Second Brain
-          </p>
-          <p className="text-xs mt-0.5 uppercase tracking-widest" style={{ color: "var(--sidebar-text)", fontSize: "0.6rem" }}>
-            Администратор
-          </p>
-        </div>
-
-        {/* Navigation */}
-        <nav className="flex-1 px-2 py-4 space-y-0.5 overflow-y-auto">
-          <AdminNav />
-        </nav>
-
-        {/* User info */}
-        <div
-          className="px-4 py-4"
-          style={{ borderTop: "2px solid var(--sidebar-border)" }}
-        >
-          <p className="text-xs mb-3 truncate" style={{ color: "var(--sidebar-text)" }}>
-            {session.user.name}
-          </p>
-          <LogoutButton />
-        </div>
-      </aside>
-
-      {/* Main content */}
-      <div className="ml-52 flex-1 min-h-screen" style={{ backgroundColor: "var(--background)" }}>
-        {children}
-      </div>
-    </div>
-  );
 }

src/app/curator/layout.tsx

@@ -3,15 +3,16 @@ import { auth } from "@/lib/auth";
 import { redirect } from "next/navigation";
 import Link from "next/link";
 import { LogoutButton } from "@/components/layout/logout-button";
+import { AdminShell } from "@/components/admin/admin-shell";
 
 export default async function CuratorLayout({ children }: { children: React.ReactNode }) {
   const session = await auth.api.getSession({ headers: await headers() });
   if (!session) redirect("/login");
   if (session.user.role !== "curator" && session.user.role !== "admin") redirect("/dashboard");
 
-  // Admin uses their own layout — render content only
+  // Admin uses the admin shell with sidebar
   if (session.user.role === "admin") {
-    return <>{children}</>;
+    return <AdminShell userName={session.user.name}>{children}</AdminShell>;
   }
 
   return (

src/components/admin/admin-shell.tsx

@@ -0,0 +1,40 @@
+import { AdminNav } from "@/components/admin/admin-nav";
+import { LogoutButton } from "@/components/layout/logout-button";
+
+export function AdminShell({
+  children,
+  userName,
+}: {
+  children: React.ReactNode;
+  userName: string;
+}) {
+  return (
+    <div className="min-h-screen flex">
+      <aside
+        className="w-52 flex flex-col shrink-0 fixed h-full z-10"
+        style={{ backgroundColor: "var(--sidebar-bg)", color: "var(--sidebar-text)" }}
+      >
+        <div className="px-5 py-5" style={{ borderBottom: "2px solid var(--sidebar-border)" }}>
+          <p className="font-bold text-base tracking-wide" style={{ color: "#E8F0D8" }}>
+            Second Brain
+          </p>
+          <p className="text-xs mt-0.5 uppercase tracking-widest" style={{ color: "var(--sidebar-text)", fontSize: "0.6rem" }}>
+            Администратор
+          </p>
+        </div>
+        <nav className="flex-1 px-2 py-4 space-y-0.5 overflow-y-auto">
+          <AdminNav />
+        </nav>
+        <div className="px-4 py-4" style={{ borderTop: "2px solid var(--sidebar-border)" }}>
+          <p className="text-xs mb-3 truncate" style={{ color: "var(--sidebar-text)" }}>
+            {userName}
+          </p>
+          <LogoutButton />
+        </div>
+      </aside>
+      <div className="ml-52 flex-1 min-h-screen" style={{ backgroundColor: "var(--background)" }}>
+        {children}
+      </div>
+    </div>
+  );
+}