添加 hallmark 技能

skills/hallmark/references/components/h3-quote-led.md

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+### H3 · Quote-Led
+A pull-quote with attribution is the hero. Your headline is borrowed credibility.
+*Use when:* you have a real testimonial that earns the front page.
+*Don't confuse with:* T3 Single huge quote (which lives mid-page, not in the hero slot).
+
+```html
+<section class="hero-quote">
+  <blockquote class="display-italic">"…"</blockquote>
+  <p class="attribution">— Name, Role, Company</p>
+</section>
+```