feat(favs): Sterne-Favoriten pro Sound; Speicherung per Cookie (ohne Login)

web/src/cookies.ts

@@ -0,0 +1,18 @@
+export function setCookie(name: string, value: string, days = 365): void {
+  const expires = new Date(Date.now() + days * 24 * 60 * 60 * 1000).toUTCString();
+  document.cookie = `${encodeURIComponent(name)}=${encodeURIComponent(value)}; expires=${expires}; path=/; SameSite=Lax`;
+}
+
+export function getCookie(name: string): string | null {
+  const key = `${encodeURIComponent(name)}=`;
+  const parts = document.cookie.split(';');
+  for (const part of parts) {
+    const trimmed = part.trim();
+    if (trimmed.startsWith(key)) {
+      return decodeURIComponent(trimmed.slice(key.length));
+    }
+  }
+  return null;
+}
+
+