feat: grid layout, global claim/qty toggles, admin access link, swaddle image

- Public wishlist now renders as responsive 3-col grid instead of list
- Subtitle supports line breaks (whitespace-pre-line)
- claimingEnabled and showQuantity moved to global site settings (not per-item); toggled in admin Configurações panel; claim API enforces server-side
- Admin dashboard shows admin access link with copy button
- Settings API exposes and persists the two new boolean settings

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

app/api/settings/route.ts

@@ -13,18 +13,18 @@ export async function GET() {
       return acc;
     }, {} as Record<string, string>);
 
-    if (!settingsObj.siteTitle) {
-      settingsObj.siteTitle = 'Wishlist';
-    }
-    if (!settingsObj.homepageSubtext) {
-      settingsObj.homepageSubtext = 'Browse and explore available wishlists';
-    }
+    if (!settingsObj.siteTitle) settingsObj.siteTitle = 'Wishlist';
+    if (!settingsObj.homepageSubtext) settingsObj.homepageSubtext = 'Browse and explore available wishlists';
+    if (settingsObj.claimingEnabled === undefined) settingsObj.claimingEnabled = 'true';
+    if (settingsObj.showQuantity === undefined) settingsObj.showQuantity = 'true';
 
     return NextResponse.json({
       success: true,
       settings: {
         siteTitle: settingsObj.siteTitle,
         homepageSubtext: settingsObj.homepageSubtext,
+        claimingEnabled: settingsObj.claimingEnabled !== 'false',
+        showQuantity: settingsObj.showQuantity !== 'false',
       },
     });
   } catch (error) {
@@ -44,7 +44,7 @@ export async function PUT(request: NextRequest) {
     }
 
     const body = await request.json();
-    const { siteTitle, homepageSubtext } = body;
+    const { siteTitle, homepageSubtext, claimingEnabled, showQuantity } = body;
 
     if (siteTitle !== undefined) {
       const existing = await db
@@ -86,6 +86,18 @@ export async function PUT(request: NextRequest) {
       }
     }
 
+    for (const [key, val] of [['claimingEnabled', claimingEnabled], ['showQuantity', showQuantity]] as const) {
+      if (val !== undefined) {
+        const strVal = val ? 'true' : 'false';
+        const existing = await db.select().from(settings).where(eq(settings.key, key)).limit(1);
+        if (existing.length > 0) {
+          await db.update(settings).set({ value: strVal, updatedAt: new Date() }).where(eq(settings.key, key));
+        } else {
+          await db.insert(settings).values({ key, value: strVal });
+        }
+      }
+    }
+
     return NextResponse.json({
       success: true,
       message: 'Settings updated successfully',