Fix admin translations to use entity references

- Update admin index page to use entities.members and entities.tags
- Rename admin.node_tags_description to admin.tags_description
- Remove redundant admin.*_title keys in favor of entities

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/meshcore_hub/web/static/js/spa/pages/admin/index.js

@@ -53,7 +53,7 @@ export async function render(container, params, router) {
         <div class="card-body">
             <h2 class="card-title">
                 ${iconUsers('h-6 w-6')}
-                ${t('admin.members_title')}
+                ${t('entities.members')}
             </h2>
             <p>${t('admin.members_description')}</p>
         </div>
@@ -62,9 +62,9 @@ export async function render(container, params, router) {
         <div class="card-body">
             <h2 class="card-title">
                 ${iconTag('h-6 w-6')}
-                ${t('admin.node_tags_title')}
+                ${t('entities.tags')}
             </h2>
-            <p>${t('admin.node_tags_description')}</p>
+            <p>${t('admin.tags_description')}</p>
         </div>
     </a>
 </div>`, container);

src/meshcore_hub/web/static/locales/en.json

@@ -174,7 +174,7 @@
         "auth_required_description": "You must sign in to access the admin interface.",
         "welcome": "Welcome to the admin panel.",
         "members_description": "Manage network members and operators.",
-        "node_tags_description": "Manage custom tags and metadata for network nodes."
+        "tags_description": "Manage custom tags and metadata for network nodes."
     },
     "admin_members": {
         "network_members": "Network Members ({{count}})",