feat: add window management, shortcuts, and build fixes

- Add Ctrl+Shift+N shortcut to create new windows
- Implement window state persistence (save/restore position and size)
- New windows duplicate the size of the currently focused window with an offset
- Fix Debian package chrome-sandbox permissions via after-install script
- Update build configuration: remove rpm, add author email

.github/workflows/release.yml

@@ -0,0 +1,65 @@
+name: Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      bump:
+        description: "Semver bump (patch, minor, major)"
+        required: false
+        default: "patch"
+  push:
+    branches:
+      - release
+
+jobs:
+  build-and-release:
+    if: github.actor != 'github-actions[bot]'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: true
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Bump version and tag
+        id: bump
+        env:
+          BUMP: ${{ inputs.bump }}
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          npm version "${BUMP:-patch}" -m "chore: release %s"
+          VERSION=$(node -p "require('./package.json').version")
+          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
+          git push
+          git push --tags
+
+      - name: Build artifacts
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          npm run build
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: v${{ steps.bump.outputs.version }}
+          name: Linear v${{ steps.bump.outputs.version }}
+          draft: false
+          prerelease: false
+          files: |
+            dist/*.AppImage
+            dist/*.deb
+            dist/*.rpm