fix: update default table border size in @superdoc/contracts

Unclear where the original 0.5 value came from; change it to 1 to
reflect the default value used in rendering table borders.

Author: afn

packages/layout-engine/contracts/src/index.ts

@@ -445,10 +445,10 @@ export type CompleteTableCellAttrs = DeepRequired<TableCellAttrs>;
 
 export const defaultTableCellAttrs: DeepReadonly<CompleteTableCellAttrs> = {
   borders: {
-    top: { style: 'single', width: 0.5, color: 'auto', space: 0 },
-    right: { style: 'single', width: 0.5, color: 'auto', space: 0 },
-    bottom: { style: 'single', width: 0.5, color: 'auto', space: 0 },
-    left: { style: 'single', width: 0.5, color: 'auto', space: 0 },
+    top: { style: 'single', width: 1, color: 'auto', space: 0 },
+    right: { style: 'single', width: 1, color: 'auto', space: 0 },
+    bottom: { style: 'single', width: 1, color: 'auto', space: 0 },
+    left: { style: 'single', width: 1, color: 'auto', space: 0 },
   },
   padding: {
     top: 2,

packages/layout-engine/measuring/dom/src/table-utils.ts

@@ -5,7 +5,5 @@ export function getBorderWidth(border: BorderSpec | null | undefined): number {
     return 0;
   }
 
-  // TODO: Is there a reason the default is different from the default border weight in defaultTableCellAttrs.borders?
-  // (This is the same default value used in applyBorder() in painters/dom/src/table/border-utils.ts)
   return border.width ?? 1;
 }

packages/layout-engine/painters/dom/src/table/border-utils.ts

@@ -86,7 +86,7 @@ export const applyBorder = (
   }
 
   const style = borderStyleToCSS(border.style);
-  const width = border.width ?? 1; // TODO: Is there a reason this is different from the default border weight in defaultTableCellAttrs.borders?
+  const width = border.width ?? 1;
   const color = border.color ?? '#000000';
   const safeColor = isValidHexColor(color) ? color : '#000000';
   const actualWidth = border.style === 'thick' ? Math.max(width * 2, 3) : width;