fix: linting cleanup, TS errors, mobile cookie banner and hero max-width

app/kontakt/actions.ts

@@ -17,7 +17,7 @@ const contactFormSchema = z.object({
   consent: z.boolean().refine((val) => val === true, "Zgoda RODO jest wymagana"),
 });
 
-export async function submitContactForm(prevState: any, formData: FormData) {
+export async function submitContactForm(prevState: unknown, formData: FormData) {
   try {
     if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY && process.env.RECAPTCHA_SECRET_KEY) {
       const token = formData.get('recaptchaToken') as string;

app/kontakt/page.tsx

@@ -23,7 +23,7 @@ export default function KontaktPage() {
         ctaLink={`tel:${companyDetails.phoneRaw}`}
         secondaryCtaText="Napisz maila"
         secondaryCtaLink={`mailto:${companyDetails.email}`}
-        backgroundImage="https://images.unsplash.com/photo-1516387938699-a93567ec168e?w=1600&q=80"
+        backgroundImage="/images/hero/hero-section-image.webp"
       />
 
       <ContactSection />