chore: drop design-doc citations from code comments (English-only sweep) (#236)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/desktop/electron-builder.yml

@@ -1,4 +1,4 @@
-# electron-builder config (design § "桌面端原型 · 打包与更新", milestone M3).
+# electron-builder config for the desktop shell installers.
 #
 # The app directory is the pnpm-deploy staging tree assembled by scripts/stage.mjs —
 # a portable, self-contained node_modules (workspace packages materialized) plus the