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

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

.github/workflows/desktop-build.yml

@@ -1,4 +1,4 @@
-# Desktop packages (design § "桌面端原型 · 打包与更新", milestone M3).
+# Desktop packages: Electron installers for the desktop shell.
 #
 # Reusable three-OS matrix: stage the pnpm-deploy app tree, run electron-builder, and
 # upload the installers as workflow artifacts named desktop-<OS>. release.yml calls this

.github/workflows/release.yml

@@ -79,7 +79,7 @@ jobs:
 
   # Desktop installers (Electron shell, three-OS matrix). Runs BEFORE the release job:
   # Release assets are immutable once published, so the installers must exist when the
-  # Release is created. See design § "桌面端原型 · 打包与更新" (M3).
+  # Release is created.
   desktop:
     needs: check-release
     if: needs.check-release.outputs.exists != 'true'