Fix black background issue on Board and Member portal pages

- Added board-dashboard class wrapper to Board pages (Governance, Meetings, Members)
- Added member-dashboard class wrapper to Member pages (Events, Profile, Resources)
- All pages now properly display the light gradient background matching admin dashboard

🤖 Generated with [Claude Code](https://claude.ai/code)

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

pages/member/resources/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <div>
+  <div class="member-dashboard">
     <!-- Header -->
     <div class="mb-6">
       <h1 class="text-h4 font-weight-bold mb-2">Resources</h1>