fix(certificates): update links and hide unavailable actions

src/components/MilestonesSection.tsx

@@ -47,19 +47,20 @@ export const MilestonesSection: React.FC = () => {
 
                 <p className={styles.description}>{item.description}</p>
 
-                {/* View Certificate Link */}
-                <div className={styles.actionRow}>
-                  <a
-                    href={item.link && item.link !== '#' ? item.link : item.image}
-                    className={styles.viewCertLink}
-                    target="_blank"
-                    rel="noopener noreferrer"
-                    aria-label={`View ${item.title} certificate`}
-                  >
-                    <span>View certificate</span>
-                    <ExternalLink size={20} strokeWidth={2.25} aria-hidden="true" />
-                  </a>
-                </div>
+                {item.link && (
+                  <div className={styles.actionRow}>
+                    <a
+                      href={item.link}
+                      className={styles.viewCertLink}
+                      target="_blank"
+                      rel="noopener noreferrer"
+                      aria-label={`View ${item.title} certificate`}
+                    >
+                      <span>View certificate</span>
+                      <ExternalLink size={20} strokeWidth={2.25} aria-hidden="true" />
+                    </a>
+                  </div>
+                )}
               </div>
             </div>
           ))}