Add single-file executable using bun (#332)

This adds a single-file executable using bun. The trick is to use a
separate flag for ACP `--acp` and spawn the regular `cli.js` bundled by
the Agent SDK if no flags are passed. This was, we can pass ourselves as
pathToClaudeCodeExecutable.

.github/workflows/publish.yml

@@ -1,11 +1,81 @@
-name: Publish Package to npmjs
+name: Publish and Release
 on:
   push:
     tags:
       - "v*.*.*"
+  workflow_dispatch:
+
 jobs:
-  publish-npm:
+  build-binaries:
+    name: Build (${{ matrix.target }})
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    timeout-minutes: 15
+
+    strategy:
+      fail-fast: true
+      matrix:
+        include:
+          - target: bun-linux-x64
+            artifact: claude-agent-acp-linux-x64
+            archive: claude-agent-acp-linux-x64.tar.gz
+          - target: bun-linux-arm64
+            artifact: claude-agent-acp-linux-arm64
+            archive: claude-agent-acp-linux-arm64.tar.gz
+          - target: bun-linux-x64-musl
+            artifact: claude-agent-acp-linux-x64-musl
+            archive: claude-agent-acp-linux-x64-musl.tar.gz
+          - target: bun-linux-arm64-musl
+            artifact: claude-agent-acp-linux-arm64-musl
+            archive: claude-agent-acp-linux-arm64-musl.tar.gz
+          - target: bun-darwin-x64
+            artifact: claude-agent-acp-darwin-x64
+            archive: claude-agent-acp-darwin-x64.zip
+          - target: bun-darwin-arm64
+            artifact: claude-agent-acp-darwin-arm64
+            archive: claude-agent-acp-darwin-arm64.zip
+          - target: bun-windows-x64
+            artifact: claude-agent-acp-windows-x64.exe
+            archive: claude-agent-acp-windows-x64.zip
+
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+
+      - uses: oven-sh/setup-bun@3d267786b128fe76c2f16a390aa2448b815359f3
+        with:
+          bun-version: latest
+
+      - name: Install dependencies
+        run: bun install
+
+      - name: Build binary
+        run: |
+          bun build src/static-entry.ts \
+            --compile \
+            --target ${{ matrix.target }} \
+            --define 'process.env.CLAUDE_AGENT_ACP_IS_SINGLE_FILE_BUN="true"' \
+            --outfile ${{ matrix.artifact }}
+
+      - name: Compress binary
+        run: |
+          if [[ "${{ matrix.archive }}" == *.zip ]]; then
+            zip ${{ matrix.archive }} ${{ matrix.artifact }}
+          else
+            tar czf ${{ matrix.archive }} ${{ matrix.artifact }}
+          fi
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f
+        with:
+          name: ${{ matrix.archive }}
+          path: ${{ matrix.archive }}
+
+  publish-npm:
+    name: Publish to npm
+    runs-on: ubuntu-latest
+    needs: [build-binaries]
+    if: startsWith(github.ref, 'refs/tags/')
     environment: release # Optional: for enhanced security
     permissions:
       contents: read
@@ -22,15 +92,26 @@ jobs:
       - run: npm ci
       - run: npm run build
       - run: npm publish
+
   release:
+    name: Create Release
     runs-on: ubuntu-latest
-    needs: [publish-npm]
+    needs: [build-binaries, publish-npm]
+    if: startsWith(github.ref, 'refs/tags/')
     permissions:
       contents: write
+
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131
+        with:
+          path: artifacts
+          merge-multiple: true
+
       - name: Create Release
-        id: create_release
         uses: softprops/action-gh-release@6da8fa9354ddfdc4aeace5fc48d7f679b5214090
         with:
           generate_release_notes: true
+          files: artifacts/*