fix(admin): affiliate program + product delete buttons missing text/closing tag

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/src/padelnomics/admin/templates/admin/partials/affiliate_program_results.html

@@ -24,6 +24,7 @@
     <form method="post" action="{{ url_for('admin.affiliate_program_delete', program_id=prog.id) }}" style="display:inline" hx-boost="true">
       <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
       <button type="submit" class="btn-outline btn-sm"
+              onclick="return confirm('Delete this program?')">Delete</button>
     </form>
   </td>
 </tr>

web/src/padelnomics/admin/templates/admin/partials/affiliate_row.html

@@ -23,6 +23,7 @@
     <form method="post" action="{{ url_for('admin.affiliate_delete', product_id=product.id) }}" style="display:inline" hx-boost="true">
       <input type="hidden" name="csrf_token" value="{{ csrf_token() }}">
       <button type="submit" class="btn-outline btn-sm"
+              onclick="return confirm('Delete this product?')">Delete</button>
     </form>
   </td>
 </tr>