docs: Entity 선택, Property Inspector, Layer 관리 패널 및 UI 패널 가이드 문서 추가

docs/modules-dwg-dxf.html

@@ -197,8 +197,27 @@
       <div class="d"><code>isDwg</code> / <code>isDxf</code> / <code>is2D</code> — 의존 zero.</div>
       <div class="path">ext2d.ts</div>
     </div>
+    <div class="card j">
+      <div class="k">propertyInspector <span class="badge j">ui</span></div>
+      <div class="d">엔티티 상세 속성(LINE/CIRCLE/ARC/POLYLINE/TEXT/INSERT 등) 계산 & 렌더.</div>
+      <div class="path">propertyInspector.ts</div>
+    </div>
+    <div class="card j">
+      <div class="k">layerPanel <span class="badge j">ui</span></div>
+      <div class="d">LayerPanelManager — 실시간 검색, 가시성 Eye 토글, 전체 켜기/끄기.</div>
+      <div class="path">layerPanel.ts</div>
+    </div>
+    <div class="card j">
+      <div class="k">panelUtils <span class="badge j">ui</span></div>
+      <div class="d">플로팅 UI 창 헤더 드래그 이동, 접기/펼치기, Resizable 유틸.</div>
+      <div class="path">panelUtils.ts</div>
+    </div>
   </div>
 
+  <p style="margin:16px 0 0; font-size:13px; color:var(--ink-soft)">
+    📖 <b>엔티티 선택 & UI 패널 통합 가이드</b>: <a href="entity-selection-property-layer-ui.md" target="_blank">docs/entity-selection-property-layer-ui.md</a> 참조
+  </p>
+
   <!-- 02 pipeline -->
   <h2><span class="num">02</span> 조립 파이프라인</h2>
   <div class="flow">