Hide cart for admin users and remove confirmation from view-only modals

Admin Cart Visibility:
- Hide cart icon/badge in mobile header for admin users
- Cart was already hidden in desktop sidebar
- Admins don't need to purchase products

Modal Confirmation Improvements:
- Removed confirmation from AdminOrders detail dialog (view-only)
- Removed confirmation from AdminMembers detail dialog (view-only)
- Kept confirmation on AdminProducts form dialog (has form inputs)
- Kept confirmation on AdminEvents form dialogs (Event and Block forms)
- Kept confirmation on AdminConsulting meet link dialog (has form input)

This prevents annoying confirmations on simple view/close actions while
still protecting users from accidentally closing forms with unsaved data.

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

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

src/components/AppLayout.tsx

@@ -244,14 +244,16 @@ export function AppLayout({ children }: AppLayoutProps) {
             <span>{brandName}</span>
           </Link>
           <div className="flex items-center gap-2">
-            <Link to="/checkout" className="relative p-2">
-              <ShoppingCart className="w-5 h-5" />
-              {items.length > 0 && (
-                <span className="absolute top-0 right-0 bg-primary text-primary-foreground text-xs w-4 h-4 flex items-center justify-center">
-                  {items.length}
-                </span>
-              )}
-            </Link>
+            {!isAdmin && (
+              <Link to="/checkout" className="relative p-2">
+                <ShoppingCart className="w-5 h-5" />
+                {items.length > 0 && (
+                  <span className="absolute top-0 right-0 bg-primary text-primary-foreground text-xs w-4 h-4 flex items-center justify-center">
+                    {items.length}
+                  </span>
+                )}
+              </Link>
+            )}
           </div>
         </header>