Retake all project screenshots; fix ZEUS link

Fresh captures of every project card at 1440x900 — Dash had a stale
image. ZEUS card now links apex zeusport.cz (www cert is broken).
reklik.net is unreachable; keeping existing image.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

index.html

@@ -220,7 +220,7 @@
               <p>Full-service digital marketing for sports clubs — websites, content, social systems.</p>
             </div>
           </a>
-          <a class="card" href="https://www.zeusport.cz" target="_blank" rel="noopener">
+          <a class="card" href="https://zeusport.cz" target="_blank" rel="noopener">
             <figure><img src="images/projects/zeus.cz.png" alt="ZEUS CZ e-shop" loading="lazy"></figure>
             <div class="card-body">
               <div class="card-head"><h3>ZEUS Sport</h3><span class="tag tag-zeus">E-commerce</span></div>