去掉首页和后台的 Profeto 字样

- 首页刊头仅保留「先知」毛笔字
- 后台侧边栏仅保留「先知」毛笔字
- 版本号简化为 v1.0

Co-Authored-By: new-provider/LongCat-2.0 <<EMAIL>>

frontend/src/admin/AdminLayout.tsx

@@ -171,9 +171,6 @@ export default function AdminLayout() {
         <div className="flex items-center justify-between border-b border-ink-900 px-5 py-4">
           <h1 className="font-brush text-xl text-ink-900">
             先知
-            <span className="ml-2 align-baseline font-serif text-xs font-normal italic tracking-normal text-ink-500">
-              Profeto
-            </span>
           </h1>
           <span className="text-2xs tracking-[0.25em] text-ink-400">ADMIN</span>
         </div>
@@ -235,7 +232,7 @@ export default function AdminLayout() {
             <span aria-hidden="true">←</span>
             返回前台版面
           </a>
-          <p className="text-2xs text-ink-300">Profeto v1.0</p>
+          <p className="text-2xs text-ink-300">v1.0</p>
         </div>
       </aside>