feat: 增加角色管理与奖池配置迁移，优化管理端权限与样式

src/components/admin/admin-shell.tsx

@@ -17,7 +17,7 @@ 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-14 items-center gap-3 border-b border-border bg-background/80 pl-4 pr-4 py-2 backdrop-blur-md">
+        <header className="sticky top-0 z-30 flex h-14 shrink-0 items-center gap-3 border-b border-border bg-card/90 px-4 shadow-[0_1px_0_rgb(216_230_251_/_45%)] backdrop-blur-md">
           <SidebarTrigger />
           <Separator orientation="vertical" className="mr-1.5 h-4" />
           <AdminBreadcrumb />
@@ -25,7 +25,7 @@ export function AdminShell({ children }: { children: ReactNode }) {
             <ShellToolbar />
           </div>
         </header>
-        <div className="flex flex-1 flex-col px-6 pt-4 pb-6 md:px-8 md:pt-4 md:pb-8">
+        <div className="flex flex-1 flex-col px-4 pt-4 pb-6 md:px-5 md:pt-4 md:pb-6">
           {children}
         </div>
       </SidebarInset>