build(release): emit macOS zip artifacts and skip universal NSIS installer

- Add macOS zip target so electron-updater can perform in-place updates
- Disable NSIS universal installer to emit only per-arch Windows builds
- Include Lightcode-*.zip in the release workflow upload artifacts

Author: SDSLeon

.github/workflows/release.yml

@@ -165,6 +165,7 @@ jobs:
           path: |
             release/Lightcode-*.exe
             release/Lightcode-*.dmg
+            release/Lightcode-*.zip
             release/Lightcode-*.AppImage
             release/Lightcode-*.deb
             release/latest*.yml

electron-builder.yml

@@ -135,6 +135,8 @@ nsis:
   oneClick: false
   perMachine: false
   allowToChangeInstallationDirectory: true
+  # Skip the combined multi-arch installer; emit only per-arch builds.
+  buildUniversalInstaller: false
   artifactName: ${productName}-Setup-${version}-${arch}.${ext}
 
 linux:
@@ -156,6 +158,12 @@ mac:
       arch:
         - x64
         - arm64
+    # electron-updater requires a zipped app bundle for in-place macOS updates;
+    # the DMG is install-only. Without zip, clients fail with "ZIP file not provided".
+    - target: zip
+      arch:
+        - x64
+        - arm64
   icon: build/icon.icns
   category: public.app-category.developer-tools
   artifactName: ${productName}-${version}-${arch}.${ext}