Add multi-file upload, auto-refresh reports, and CSV export

- Allow recruiters to upload multiple CVs at once with batch processing
- Add auto-refresh polling on Report page during CV processing
- Add CSV export button on Dashboard for completed check summaries
- Update logo and reset to Bootstrap default styling

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

src/TrueCV.Web/Components/Pages/Account/Login.razor

@@ -16,7 +16,7 @@
             <div class="card border-0 shadow">
                 <div class="card-body p-5">
                     <div class="text-center mb-4">
-                        <img src="/images/TrueCV_Logo.png" alt="TrueCV" class="mb-3" style="height: 60px;" />
+                        <img src="images/TrueCV_Logo.png" alt="TrueCV" class="mb-3" style="height: 60px;" />
                         <h3 class="fw-bold">Welcome Back</h3>
                         <p class="text-muted">Sign in to your TrueCV account</p>
                     </div>