feat: 배경 테마(다크/라이트)에 따른 ACI 7번 색상 동적 변경 적용

src/viewer2d/Viewer2D.d.ts

@@ -5,7 +5,7 @@ import type { CadSpace } from './cadSpaces';
 export class Viewer2D {
   constructor(container: HTMLElement);
   /** Render a DWG/DXF parseResult. `keepView` preserves pan/zoom on re-render. */
-  load(result: unknown, opts?: { keepView?: boolean; spaceHandle?: string | number | null }): void;
+  load(result: unknown, opts?: { keepView?: boolean; keepTheme?: boolean; spaceHandle?: string | number | null }): void;
   /** Zoom-extents to the loaded drawing. */
   fit(): void;
   /** Resync renderer/camera to the container size (call after un-hiding). */