feat(config): 重构配置中心导航与版本展示，支持全量版本加载

src/components/admin/admin-shell.tsx

@@ -17,15 +17,15 @@ export function AdminShell({ children }: { children: ReactNode }) {
     <SidebarProvider defaultOpen>
       <AdminAppSidebar />
       <SidebarInset className="max-md:overflow-x-hidden">
-        <header className="sticky top-0 z-30 flex min-h-12 items-center gap-3 border-b border-border bg-background/80 px-4 py-2 backdrop-blur-md">
+        <header className="sticky top-0 z-30 flex min-h-14 items-center gap-3 border-b border-border bg-background/80 pl-4 pr-4 py-2 backdrop-blur-md">
           <SidebarTrigger />
-          <Separator orientation="vertical" className="mr-2 h-4" />
+          <Separator orientation="vertical" className="mr-1.5 h-4" />
           <AdminBreadcrumb />
           <div className="ml-auto flex shrink-0 items-center">
             <ShellToolbar />
           </div>
         </header>
-        <div className="flex flex-1 flex-col px-6 py-6 md:px-8 md:py-8">
+        <div className="flex flex-1 flex-col px-6 pt-4 pb-6 md:px-8 md:pt-4 md:pb-8">
           {children}
         </div>
       </SidebarInset>