Add MSIX support for Microsoft Store distribution

Implement MSIX packaging alongside existing Squirrel installer for Windows.

Key Changes:
- Add @electron-forge/maker-msix dependency
- Configure MSIX maker with proper manifest variables:
  * packageIdentity: 'TalkToFigmaDesktop' (no spaces, required)
  * packageDisplayName: 'TalkToFigma Desktop' (user-facing)
  * appDisplayName: 'TalkToFigma Desktop' (app name)
  * appExecutable: 'talktofigma-desktop.exe' (matches executableName)
- Update GitHub Actions to build and upload MSIX packages
- Add universal macOS build support (--arch=universal for arm64 + x64)
- Update GitLab CI for universal builds

Technical Details:
- MSIX is experimental in Electron Forge v7.10+
- Both Squirrel (traditional) and MSIX (Store) installers are built
- Package identity cannot contain spaces per MSIX schema
- Executable name must match packagerConfig.executableName

Artifacts Generated:
- Windows: Setup.exe, .nupkg (Squirrel) + .msix (Store)
- macOS: Universal DMG and ZIP (Intel + Apple Silicon)

Author: JooHyung Park

.github/workflows/build.yml

@@ -57,7 +57,7 @@ jobs:
         run: npm ci --prefer-offline
 
       - name: Build macOS app (unsigned)
-        run: npm run make -- --platform=darwin
+        run: npm run make -- --platform=darwin --arch=universal
         env:
           # Disable code signing by not providing credentials
           SIGNING_IDENTITY: ''
@@ -107,6 +107,10 @@ jobs:
 
       - name: Build Windows app
         run: npm run make -- --platform=win32
+        env:
+          # MSIX maker will run without signing in test mode
+          # For production, set WINDOWS_SIGN_CERTIFICATE and WINDOWS_SIGN_PASSWORD
+          DEBUG: electron-windows-msix*
 
       - name: List build artifacts
         shell: bash
@@ -120,7 +124,8 @@ jobs:
           name: windows-build
           path: |
             out/make/squirrel.windows/**/*.exe
-            out/make/squirrel.windows/**/*.msi
+            out/make/squirrel.windows/**/*.nupkg
+            out/make/msix/**/*.msix
           if-no-files-found: warn
 
   # Create GitHub Release
@@ -160,7 +165,8 @@ jobs:
             ### 📦 Downloads
             - **macOS DMG**: Universal binary (Apple Silicon + Intel) - unsigned community build
             - **macOS ZIP**: Alternative distribution format
-            - **Windows**: EXE installer
+            - **Windows Squirrel**: Traditional EXE installer
+            - **Windows MSIX**: Microsoft Store package (experimental)
 
             ### ⚠️ Note
             These are **unsigned community builds** for testing purposes.
@@ -177,4 +183,5 @@ jobs:
             artifacts/macos-dmg/*.dmg
             artifacts/macos-zip/**/*.zip
             artifacts/windows-build/**/*.exe
-            artifacts/windows-build/**/*.msi
+            artifacts/windows-build/**/*.nupkg
+            artifacts/windows-build/**/*.msix

.gitlab-ci.yml

@@ -85,7 +85,7 @@ build-macos:
         npm version $TAG_VERSION --no-git-tag-version --allow-same-version
       fi
     - npm ci --prefer-offline
-    - npm run make -- --platform=darwin
+    - npm run make -- --platform=darwin --arch=universal
   after_script:
     # Clean up temporary keychain
     - security delete-keychain ~/Library/Keychains/ci-build.keychain-db || true

forge.config.ts

@@ -1,5 +1,6 @@
 import type { ForgeConfig } from '@electron-forge/shared-types';
 import { MakerSquirrel } from '@electron-forge/maker-squirrel';
+import { MakerMSIX } from '@electron-forge/maker-msix';
 import { MakerZIP } from '@electron-forge/maker-zip';
 import { MakerDMG } from '@electron-forge/maker-dmg';
 import { VitePlugin } from '@electron-forge/plugin-vite';
@@ -26,8 +27,24 @@ const config: ForgeConfig = {
       format: 'ULFO',
     }, ['darwin']),
     new MakerZIP({}, ['darwin']),
-    // Windows: Squirrel installer
-    new MakerSquirrel({}),
+    // Windows: MSIX (for Microsoft Store) and Squirrel (for direct download)
+    new MakerMSIX({
+      manifestVariables: {
+        publisher: 'CN=GRABTAXI HOLDINGS PTE. LTD.',
+        // packageIdentity: MSIX package identity (no spaces allowed)
+        packageIdentity: 'TalkToFigmaDesktop',
+        // packageDisplayName: User-facing package name (spaces allowed)
+        packageDisplayName: 'TalkToFigma Desktop',
+        // appDisplayName: User-facing app name (spaces allowed)
+        appDisplayName: 'TalkToFigma Desktop',
+        // appExecutable: Must match packagerConfig.executableName
+        appExecutable: 'talktofigma-desktop.exe',
+      },
+      // Code signing will be configured in CI via windowsSignOptions
+    }, ['win32']),
+    new MakerSquirrel({
+      // Squirrel for traditional installer
+    }, ['win32']),
   ],
   plugins: [
     new VitePlugin({

package-lock.json

@@ -27,6 +27,7 @@
     "@electron-forge/cli": "^7.10.2",
     "@electron-forge/maker-deb": "^7.10.2",
     "@electron-forge/maker-dmg": "^7.11.1",
+    "@electron-forge/maker-msix": "^7.11.1",
     "@electron-forge/maker-rpm": "^7.10.2",
     "@electron-forge/maker-squirrel": "^7.10.2",
     "@electron-forge/maker-zip": "^7.10.2",