Github action to build extension

Author: Raytwo

.github/workflows/release-vscode.yml

@@ -0,0 +1,77 @@
+name: Release VS Code extension
+
+on:
+  push:
+    tags:
+      - 'vscode-v*'
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build (${{ matrix.vsce_target }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            rust_target: aarch64-apple-darwin
+            vsce_target: darwin-arm64
+            exe_suffix: ""
+          - os: ubuntu-latest
+            rust_target: x86_64-unknown-linux-gnu
+            vsce_target: linux-x64
+            exe_suffix: ""
+          - os: windows-latest
+            rust_target: x86_64-pc-windows-msvc
+            vsce_target: win32-x64
+            exe_suffix: ".exe"
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.rust_target }}
+
+      - name: Cache cargo registry & build
+        uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: cli
+
+      - name: Build engage + engage-lsp
+        working-directory: cli
+        run: cargo build --release --target ${{ matrix.rust_target }} --bins
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install extension dependencies
+        working-directory: vscode
+        run: npm ci
+
+      - name: Compile extension TypeScript
+        working-directory: vscode
+        run: npm run compile
+
+      - name: Stage binaries into extension
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p vscode/bin
+          cp "cli/target/${{ matrix.rust_target }}/release/engage${{ matrix.exe_suffix }}" "vscode/bin/"
+          cp "cli/target/${{ matrix.rust_target }}/release/engage-lsp${{ matrix.exe_suffix }}" "vscode/bin/"
+
+      - name: Package VSIX
+        working-directory: vscode
+        run: npx vsce package --target ${{ matrix.vsce_target }} --out engage-${{ github.ref_name }}-${{ matrix.vsce_target }}.vsix
+
+      - name: Upload to release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: vscode/engage-${{ github.ref_name }}-${{ matrix.vsce_target }}.vsix
+          fail_on_unmatched_files: true