Upload electron-builder blockmaps so differential updates work

Author: RhysSullivan

.github/workflows/publish-desktop.yml

@@ -172,6 +172,7 @@ jobs:
             apps/desktop/dist/*.AppImage
             apps/desktop/dist/*.deb
             apps/desktop/dist/*.rpm
+            apps/desktop/dist/*.blockmap
             apps/desktop/dist/latest*.yml
           if-no-files-found: warn
 
@@ -223,6 +224,7 @@ jobs:
           done < <(find artifacts -type f \
             \( -name "*.dmg" -o -name "*.zip" -o -name "*.exe" \
             -o -name "*.AppImage" -o -name "*.deb" -o -name "*.rpm" \
+            -o -name "*.blockmap" \
             -o -name "latest*.yml" \))
 
       # Flip draft → published only after every desktop asset is uploaded —