Storefront polish + QR share + importer deactivate fix

- Storefronts use Figtree as the default font (shop/menu, booking, book)
- Remove "Powered by Ladill" branding from the storefront header
- Fix storefront logo hiding behind the cover (logo row now relative z-10)
- Add a Share button to storefront QR downloads using the Web Share API
  (native mobile share sheet for image+link; clipboard fallback)
- storefronts:import-legacy: --deactivate-source now also retires the
  platform copy of already-imported (skipped) codes, no --refresh needed

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Console/Commands/ImportLegacyStorefronts.php

@@ -126,7 +126,14 @@ class ImportLegacyStorefronts extends Command
 
             if ($existing && ! $refresh) {
                 $skipped++;
-                $this->line("  {$row->short_code}: already exists — skipped.");
+
+                if ($deactivateSource && ! $dry && $row->is_active) {
+                    $platform->table('qr_codes')->where('id', $row->id)->update(['is_active' => 0]);
+                    $deactivated++;
+                    $this->line("  {$row->short_code}: already exists — skipped (platform copy deactivated).");
+                } else {
+                    $this->line("  {$row->short_code}: already exists — skipped.");
+                }
 
                 continue;
             }