fix: dynamic year calculation in Footer and remove WhatsApp button from desktop Header

src/components/Footer/index.tsx

@@ -36,7 +36,14 @@ export function Footer({
   const assocLink = association?.link;
   const assocLogo = association?.logo;
   
-  const copyrightText = getLocText(copyright) || `© ${new Date().getFullYear()} Finanz- & Lohnbuchhaltung Dipl.-Ing. Janusz Kędzierski.`;
+  const currentYear = new Date().getFullYear();
+  const rawCopyright = getLocText(copyright);
+  const copyrightText = rawCopyright
+    ? rawCopyright
+        .replace(/\b(19|20)\d{2}\b/, currentYear.toString())
+        .replace('{year}', currentYear.toString())
+    : `© ${currentYear} Finanz- & Lohnbuchhaltung Dipl.-Ing. Janusz Kędzierski. ${currentLocaleCode === 'de' ? 'Alle Rechte vorbehalten.' : 'Wszelkie prawa zastrzeżone.'}`;
+
   const creatorLabel = getLocText(creator?.label);
   const creatorName = creator?.name;
   const creatorUrl = creator?.url;

src/components/Header/index.tsx

@@ -63,21 +63,8 @@ export function Header({ navItems = [] }: { navItems?: any[] }) {
           </nav>
 
           {/* Right Actions & Hamburger */}
-          <div className="flex items-center gap-4 z-50">
-            <div className="flex items-center gap-2 sm:gap-4">
-              <Link 
-                href={process.env.NEXT_PUBLIC_WHATSAPP_NUMBER ? `https://wa.me/${process.env.NEXT_PUBLIC_WHATSAPP_NUMBER}` : '#'} 
-                target="_blank"
-                rel="noopener noreferrer"
-                className="flex items-center gap-2 px-3 py-2 sm:px-5 sm:py-2.5 rounded-full bg-green-500 hover:bg-green-600 text-white transition-colors font-medium text-sm shadow-sm"
-              >
-                <MessageCircle size={18} />
-                <span className="hidden sm:inline">WhatsApp</span>
-              </Link>
-              <div className="w-px h-6 bg-border mx-1 sm:mx-2 hidden xl:block" />
-            </div>
-            
-            <div className="hidden sm:flex items-center gap-2">
+          <div className="flex items-center gap-2 sm:gap-3 z-50">
+            <div className="flex items-center gap-2">
               <ThemeSwitcher />
               <LanguageSwitcher />
             </div>