revert(顶栏): 移除 LOGO 文字显示（用户反馈子应用不展示，仅门户展示）（LOGO文字与主题JSON化增补）

src/components/layout.vue

@@ -26,30 +26,14 @@ const readLogoUrl = () => {
     }
     logoUrl.value = v || defaultLogo;
 };
-// LOGO 文字（平台/学校名称，2026-10-09 LOGO 文字轮）：localStorage["yh-logo-text"]（同一异步补齐段写入），空=不展示。
-const logoText = ref("");
-const readLogoText = () => {
-    let v: string | null = null;
-    try {
-        v = localStorage.getItem("yh-logo-text");
-    } catch {
-        v = null;
-    }
-    logoText.value = v || "";
-};
 const onLogoError = () => {
     if (logoUrl.value !== defaultLogo) logoUrl.value = defaultLogo;
 };
 onMounted(() => {
     readLogoUrl();
-    readLogoText();
     document.addEventListener("yh-appearance-updated", readLogoUrl);
-    document.addEventListener("yh-appearance-updated", readLogoText);
-});
-onBeforeUnmount(() => {
-    document.removeEventListener("yh-appearance-updated", readLogoUrl);
-    document.removeEventListener("yh-appearance-updated", readLogoText);
 });
+onBeforeUnmount(() => document.removeEventListener("yh-appearance-updated", readLogoUrl));
 
 const isPanel = ref(false),
     currPath = ref<string>(""),
@@ -207,7 +191,6 @@ function linkHomePage() {
         <header class="header-container fix">
             <!-- 云海 logo 徽标（结构与 Notice layout 对齐，皮肤见通道 base.layout.css .logo-badge） -->
             <span class="logo-badge fl"><img :src="logoUrl" alt="云海" @error="onLogoError" /></span>
-            <span v-if="logoText" class="logo-text">{{ logoText }}</span>
             <div class="fl align-middle icon-box">
                 <div title="首页" class="icon-btn home-btn" @click="linkHomePage">
                     <SvgIcon name="shouye" :size="22" color="#fff" />
@@ -320,12 +303,4 @@ function linkHomePage() {
 .home-btn svg {
     display: block;
 }
-/* LOGO 文字（平台/学校名称）：贴徽标右侧，顶栏品牌色深底上白字，禁止换行挤压布局 */
-.header-container .logo-text {
-    font-size: 19px;
-    font-weight: 700;
-    color: #fff;
-    white-space: nowrap;
-    letter-spacing: 0.4px;
-}
 </style>