diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..8b3dc24
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,114 @@
+name: Build & Package
+
+on:
+  workflow_dispatch:
+    inputs:
+      platform:
+        description: "Target platform"
+        required: true
+        default: "all"
+        type: choice
+        options:
+          - all
+          - windows
+          - macos
+          - linux
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build-windows:
+    if: ${{ github.event_name == 'push' || inputs.platform == 'all' || inputs.platform == 'windows' }}
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        arch: [x64, arm64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Electron app
+        run: npm run electron:build
+
+      - name: Package for Windows (${{ matrix.arch }})
+        run: npx electron-builder --win --${{ matrix.arch }} --config electron-builder.yml
+
+      - name: Upload Windows artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows-${{ matrix.arch }}
+          path: |
+            release/*.exe
+            release/*.zip
+          if-no-files-found: warn
+
+  build-macos:
+    if: ${{ github.event_name == 'push' || inputs.platform == 'all' || inputs.platform == 'macos' }}
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        arch: [x64, arm64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Electron app
+        run: npm run electron:build
+
+      - name: Package for macOS (${{ matrix.arch }})
+        run: npx electron-builder --mac --${{ matrix.arch }} --config electron-builder.yml
+
+      - name: Upload macOS artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: macos-${{ matrix.arch }}
+          path: release/*.dmg
+          if-no-files-found: warn
+
+  build-linux:
+    if: ${{ github.event_name == 'push' || inputs.platform == 'all' || inputs.platform == 'linux' }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        arch: [x64, arm64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Electron app
+        run: npm run electron:build
+
+      - name: Package for Linux (${{ matrix.arch }})
+        run: npx electron-builder --linux --${{ matrix.arch }} --config electron-builder.yml
+
+      - name: Upload Linux artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: linux-${{ matrix.arch }}
+          path: |
+            release/*.AppImage
+            release/*.deb
+            release/*.rpm
+          if-no-files-found: warn