add app icon, rename to Sticker Cloner, pack thumbnails, sort list, smaller stickers

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

StickerCloner/Shared/StickerStore.swift

@@ -89,6 +89,15 @@ final class StickerStore {
 		return urls
 	}
 
+	func firstStickerURL(forPack name: String) -> URL? {
+		let packDir = packDirectory(name: name)
+		guard let files = try? fileManager.contentsOfDirectory(at: packDir, includingPropertiesForKeys: nil) else { return nil }
+		return files
+			.filter { $0.pathExtension == "png" }
+			.sorted { $0.lastPathComponent < $1.lastPathComponent }
+			.first
+	}
+
 	// MARK: - Migration from old sandbox
 
 	private func migrateIfNeeded() {