feat(distribution): 独立分销前台商城多租户体系、货源与订单数据严格隔离

frontend/src/layouts/AppLayout.css

@@ -51,12 +51,32 @@
   line-height: 1.2;
 }
 
+.pc-brand-title-row {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+
 .pc-brand-text {
   font-size: 16px;
   font-weight: 800;
   color: #17233d;
 }
 
+.pc-brand-badge {
+  display: inline-flex;
+  align-items: center;
+  padding: 1px 6px;
+  font-size: 10px;
+  font-weight: 700;
+  color: #ff6a00;
+  background: rgba(255, 106, 0, 0.1);
+  border: 1px solid rgba(255, 106, 0, 0.25);
+  border-radius: 999px;
+  line-height: 1.4;
+  letter-spacing: 0.2px;
+}
+
 .pc-brand-sub {
   font-size: 11px;
   color: #8b9cb5;

frontend/src/layouts/AppLayout.vue

@@ -26,9 +26,11 @@ import {
 } from '@element-plus/icons-vue'
 import { ensureSupportChat, resolveSupportScene } from '@/features/chats/api/chats'
 import { useChatUnreadCount } from '@/features/chats/composables/useChatUnreadCount'
+import { useDistributionSiteStore } from '@/stores/distributionSite'
 import { useSessionStore } from '@/stores/session'
 
 const session = useSessionStore()
+const siteStore = useDistributionSiteStore()
 const router = useRouter()
 const route = useRoute()
 const { unreadCount, unreadLabel } = useChatUnreadCount(route)
@@ -139,10 +141,17 @@ async function handleSupportClick() {
   <div class="pc-app-shell">
     <header class="pc-topbar">
       <RouterLink class="pc-brand" to="/">
-        <span class="pc-brand-mark">锤</span>
+        <span class="pc-brand-mark">{{
+          siteStore.isDistribution ? siteStore.siteName.slice(0, 1) : '锤'
+        }}</span>
         <div class="pc-brand-info">
-          <span class="pc-brand-text">大锤商行</span>
-          <small class="pc-brand-sub">哈夫币租号</small>
+          <div class="pc-brand-title-row">
+            <span class="pc-brand-text">{{ siteStore.siteName }}</span>
+            <span v-if="siteStore.isDistribution" class="pc-brand-badge">官方分销</span>
+          </div>
+          <small class="pc-brand-sub">{{
+            siteStore.isDistribution ? '官方分销·平台保障' : '哈夫币租号'
+          }}</small>
         </div>
       </RouterLink>
 
@@ -353,7 +362,7 @@ async function handleSupportClick() {
           >湘ICP备2025146668号</a
         >
         <span class="pc-footer-divider">|</span>
-        <span class="pc-footer-copyright">版权所有 ©2026 大锤网络游戏有限公司</span>
+        <span class="pc-footer-copyright">版权所有 ©2026 {{ siteStore.siteName }}</span>
       </div>
     </footer>
   </div>