fix(F006): 登录页/侧边栏 logo 替换为新版蓝色六边形图标

- 资源: src/assets/logo-jubian.png 与 logo-jubian-light.png 用新版透明底 PNG 覆盖
- LoginView.vue: alt 巨变→Logo, .rr-login-logo 36px→48px (纯图标需更显眼)
- AppLayout.vue: 侧边栏 logo alt 同步改为 Logo
- 验证: Playwright 登录页亮色截图,新图标在白色 surface 圆角方块 + brand-glow 阴影下清晰

src/components/AppLayout/AppLayout.vue

@@ -292,7 +292,7 @@ onMounted(loadBadges)
     <aside class="rr-sidebar">
       <!-- 品牌 + 搜索框(只在展开时显示) -->
       <div class="rr-sidebar-brand" v-if="!collapsed">
-        <img class="rr-sidebar-logo" :src="logoSrc" alt="巨变" />
+        <img class="rr-sidebar-logo" :src="logoSrc" alt="Logo" />
         <span class="rr-sidebar-name">产业互联网平台运营后台</span>
       </div>
 

src/modules/auth/LoginView.vue

@@ -102,7 +102,7 @@ async function onLogin() {
       <!-- 左 65%: 品牌区 -->
       <div class="rr-login-left">
         <div class="rr-login-brand">
-          <img class="rr-login-logo" :src="logoSrc" alt="巨变" />
+          <img class="rr-login-logo" :src="logoSrc" alt="Logo" />
           <div class="rr-login-product-name">产业互联网平台运营后台</div>
         </div>
 
@@ -278,7 +278,7 @@ async function onLogin() {
 }
 .rr-login-brand { display: flex; align-items: center; gap: 10px; }
 .rr-login-logo {
-  width: 36px; height: 36px;
+  width: 48px; height: 48px;
   border-radius: 9px;
   object-fit: contain;
   padding: 2px;