블록 템플릿 업데이트: 수정 3개 + 신규 17개 + catalog.yaml 재정비

수정:
- compare-2col-badge, compare-detail-gradient, hero-icon-cards 개선

신규 블록:
- cards: category-strip-table, system-2col-center, hero-icon-cards_1
- emphasis: checklist-dark
- visuals: cycle-orbit
- new/: cards-3col-persona, compare-vs-rows, cycle-3way-intersect 등 8개
- redesign/: card_hero-icon-cards_1
- svg/: arc_left, arrow_conclusion, arrow_down, line_divider
- BEPs: process-product-2col SVG + 테스트

catalog.yaml 전면 재정비 (슬롯 스키마, height_cost, 카테고리 정리)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

templates/blocks/emphasis/checklist-dark.html

@@ -0,0 +1,74 @@
+<!-- 체크리스트 다크: 체크 아이콘 + 제목:설명 N행, 다크 배경 -->
+<!--
+  📋 checklist-dark
+  ─────────────────
+  용도: 핵심 요건/원칙을 체크박스 스타일로 나열. 제목:설명 구조.
+  슬롯: items[] (각 항목에 title, description)
+  Figma 원본: Page 3 / f5 (개발 패러다임 체크리스트, 1770x553)
+  수학적 계산:
+    scale = 1200/1770 = 0.6780
+    icon: 31x24px, 행 간격: 64px
+    font: 42px → 16px
+-->
+<div class="block-cld">
+  {% for item in items %}
+  <div class="cld-row">
+    <div class="cld-check">☑</div>
+    <div class="cld-text">
+      <span class="cld-title">{{ item.title }}</span>
+      {% if item.description %}<span class="cld-sep"> : </span><span class="cld-desc">{{ item.description }}</span>{% endif %}
+    </div>
+  </div>
+  {% endfor %}
+</div>
+
+<style>
+/*
+  수학적 계산 (Figma 원본):
+  frame 1770x553, scale = 1200/1770 = 0.6780
+  icon 45x36 → 31x24, row gap 94 → 64px
+  font 42px → 16px
+*/
+.block-cld {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  width: 100%;
+  background: #1a1a1a;
+  border-radius: 10px;
+  padding: 20px 24px;
+}
+
+.cld-row {
+  display: flex;
+  align-items: flex-start;
+  gap: 12px;
+}
+
+/* ── Check Icon ── */
+.cld-check {
+  font-size: 18px;
+  color: #d4722a;
+  flex-shrink: 0;
+  line-height: 1.6;
+}
+
+/* ── Text (title : description) ── */
+.cld-text {
+  font-size: 16px;
+  line-height: 1.6;
+  color: #ffffff;
+  word-break: keep-all;
+}
+.cld-title {
+  font-weight: var(--weight-bold, 700);
+  color: #ffffff;
+}
+.cld-sep {
+  color: rgba(255,255,255,0.5);
+}
+.cld-desc {
+  font-weight: var(--weight-medium, 500);
+  color: rgba(255,255,255,0.8);
+}
+</style>