ci: cross-platform release workflow (macOS/Linux/Windows) on tag

- add .github/workflows/release.yml: on a version tag, build the Tauri app
  on macOS (arm64 + intel), Linux and Windows via tauri-action, bundling the
  engine sidecar, and publish a GitHub prerelease with the installers
- port the engine-staging script to cross-platform Node (scripts/
  prepare-engine.mjs) so it runs in beforeBuildCommand on Windows too;
  remove the bash-only prepare-engine.sh

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: gaoyu06

.github/workflows/release.yml

@@ -0,0 +1,71 @@
+name: Release
+
+# Build and publish a GitHub Release with installers for macOS, Linux and
+# Windows whenever a version tag (e.g. v0.1.0a) is pushed.
+on:
+  push:
+    tags:
+      - 'v*'
+      - '[0-9]*'
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest # Apple Silicon (arm64)
+          - os: macos-13 # Intel (x86_64)
+          - os: ubuntu-22.04 # Linux x86_64
+          - os: windows-latest # Windows x86_64
+    runs-on: ${{ matrix.os }}
+    env:
+      # The engine sidecar is built from the JuCode-CLI checkout below.
+      JUCODE_CLI_DIR: ${{ github.workspace }}/_engine
+    steps:
+      - uses: actions/checkout@v4
+      - name: Checkout engine (JuCode-CLI)
+        uses: actions/checkout@v4
+        with:
+          repository: JuCode-Team/JuCode-CLI
+          path: _engine
+
+      - name: Install Linux dependencies
+        if: matrix.os == 'ubuntu-22.04'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libwebkit2gtk-4.1-dev libgtk-3-dev \
+            libayatana-appindicator3-dev librsvg2-dev libxdo-dev \
+            build-essential file libssl-dev
+
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: |
+            src-tauri
+            _engine
+
+      - run: pnpm install --frozen-lockfile
+
+      # tauri-action runs beforeBuildCommand (pnpm bundle:engine && pnpm build),
+      # which builds the engine sidecar from JUCODE_CLI_DIR, then bundles the app
+      # and uploads the installers to a release named after the tag.
+      - uses: tauri-apps/tauri-action@v0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tagName: ${{ github.ref_name }}
+          releaseName: ${{ github.ref_name }}
+          releaseDraft: false
+          prerelease: true
+          releaseBody: |
+            Automated build. macOS builds are unsigned — on first launch use
+            right-click → Open, or run `xattr -cr /Applications/JuCode.app`.

package.json

@@ -10,7 +10,7 @@
     "preview": "vite preview",
     "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
     "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
-    "bundle:engine": "./scripts/prepare-engine.sh",
+    "bundle:engine": "node scripts/prepare-engine.mjs",
     "tauri": "tauri",
     "test": "vitest run",
     "test:watch": "vitest"

scripts/prepare-engine.mjs

@@ -0,0 +1,45 @@
+// Build the jucode engine (release) from the JuCode-CLI checkout and stage it as
+// a Tauri sidecar named with the host target triple, so `tauri build` can bundle
+// it next to the app binary. Cross-platform (macOS / Linux / Windows) so it works
+// both locally and in CI; the bash original only handled Unix.
+//
+// JuCode-CLI is resolved from JUCODE_CLI_DIR, else a sibling `../JuCode-CLI`.
+import { execFileSync } from 'node:child_process';
+import { existsSync, mkdirSync, copyFileSync } from 'node:fs';
+import { dirname, join, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const root = resolve(dirname(fileURLToPath(import.meta.url)), '..');
+const cli = process.env.JUCODE_CLI_DIR
+	? resolve(process.env.JUCODE_CLI_DIR)
+	: join(root, '..', 'JuCode-CLI');
+
+if (!existsSync(join(cli, 'Cargo.toml'))) {
+	console.error(`JuCode-CLI checkout not found at ${cli} (set JUCODE_CLI_DIR to override)`);
+	process.exit(1);
+}
+
+// Host target triple, e.g. aarch64-apple-darwin / x86_64-pc-windows-msvc.
+const triple = execFileSync('rustc', ['-vV'], { encoding: 'utf8' })
+	.split('\n')
+	.find((l) => l.startsWith('host:'))
+	?.slice('host:'.length)
+	.trim();
+if (!triple) {
+	console.error('could not determine host target triple from `rustc -vV`');
+	process.exit(1);
+}
+
+execFileSync(
+	'cargo',
+	['build', '--release', '--manifest-path', join(cli, 'Cargo.toml'), '--bin', 'jucode'],
+	{ stdio: 'inherit' }
+);
+
+const ext = process.platform === 'win32' ? '.exe' : '';
+const src = join(cli, 'target', 'release', `jucode${ext}`);
+const outDir = join(root, 'src-tauri', 'binaries');
+mkdirSync(outDir, { recursive: true });
+const dest = join(outDir, `jucode-${triple}${ext}`);
+copyFileSync(src, dest);
+console.log(`staged engine sidecar: ${dest}`);