fix(guide-layout) : align public and admin headers

app/admin/[character]/[page]/page.tsx

@@ -63,7 +63,7 @@ export default async function StructuredEditorPage({
   return (
     <div className="min-h-svh">
       <AdminHeader />
-      <main className="mx-auto flex w-full max-w-6xl flex-col gap-6 p-4 sm:p-6 lg:p-8">
+      <main className="mx-auto flex w-full max-w-7xl flex-col gap-6 px-4 pb-4 sm:px-6 sm:pb-6 lg:px-8 lg:pb-8">
         <header className="flex items-center gap-4">
           <Button
             variant="ghost"

app/admin/[character]/page.tsx

@@ -38,7 +38,7 @@ export default async function GuideOverviewPage({ params }: { params: Promise<{
   return (
     <div className="min-h-svh">
       <AdminHeader />
-      <main className="mx-auto flex w-full max-w-6xl flex-col gap-8 p-4 sm:p-6 lg:p-8">
+      <main className="mx-auto flex w-full max-w-7xl flex-col gap-8 px-4 pb-4 sm:px-6 sm:pb-6 lg:px-8 lg:pb-8">
         <header className="flex flex-wrap items-center gap-4">
           <Button variant="ghost" size="icon" render={<Link href="/admin" />} nativeButton={false} aria-label="กลับ Dashboard">
             <ArrowLeftIcon />