build(site): [SITE-07] bind Monaco DOM adaptations and WinJS reference notices

docs/licenses/monaco-editor/core-dom/ATTRIBUTION.md

@@ -0,0 +1,29 @@
+# WinJS-derived DOM helpers in Monaco
+
+Monaco 0.30.1 embeds VS Code dom.ts from commit
+829382514cb1065f5ebb90f436e1c6103e153953. Its Microsoft/MIT source explicitly
+marks SizeUtils, getTopLeftOffset, getTotalWidth, getContentHeight and
+getTotalHeight as adapted from WinJS; getContentWidth uses the same dimension
+helpers. These six declaration blocks match the editor's archived source map.
+
+The comment does not name an original WinJS release. That original version
+remains unknown. For a reproducible comparison, WinJS 4.4.5 at commit
+4329b1133b243d9ded3b5a1f98d096ee8e80e889 supplies _ElementUtilities.js and the
+complete Microsoft MIT license included alongside this note. This does not
+assert that Monaco bundled unmodified WinJS 4.4.5 or the entire WinJS library.
+
+Existing adaptations include CSS property access and pixel conversion changes,
+separate typed dimension helpers, and position calculations with borders, RTL
+scroll handling and shadow-root checks. The WinJS reference has its own computed
+style, unit conversion and position implementation. These differences are not
+changes introduced by the ArtPlayer refactor. No editor runtime bytes changed.
+
+Sources:
+- https://github.com/microsoft/vscode/blob/829382514cb1065f5ebb90f436e1c6103e153953/src/vs/base/browser/dom.ts
+- https://github.com/winjs/winjs/blob/4329b1133b243d9ded3b5a1f98d096ee8e80e889/src/js/WinJS/Utilities/_ElementUtilities.js
+- https://github.com/winjs/winjs/blob/4329b1133b243d9ded3b5a1f98d096ee8e80e889/License.txt
+
+Complete reference terms: [WinJS license](./LICENSE.txt). The editor's existing
+Microsoft MIT license and original ThirdPartyNotices are retained. Unicode
+data, other embedded sources and complete original core compilation remain
+separate review work; this notice is not a claim of complete source clearance.