feat: enhance complex linetype rendering with DWG text style data, gap midpoint centering, and theme defaults

src/viewer2d/slugText.ts

@@ -328,7 +328,7 @@ export class SlugTextBatch {
       colorInt: number, alignH: number, alignV: number): void {
     const eng = this.engine;
     const lines = String(text).split('\n');
-    const scale = height / eng.capHeightEm;
+    const scale = height;
     const lineStep = height * 5 / 3; // CAD default MTEXT line spacing
     const blockH = (lines.length - 1) * lineStep + height;