ui: rename marquee header → Example outputs

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

static/action-sections.jsx

@@ -21,7 +21,7 @@ function SampleStrip() {
     <>
       <div className="sample-marquee">
         <div className="sample-head">
-          <span>── Featured drops</span>
+          <span>── Example outputs</span>
           <span className="count">{FIGURES.length} →</span>
         </div>
         <div className="marquee-track-wrap">