ci(diskann): add cross-platform build + publish workflow

5 targets: linux-x64, linux-arm64, darwin-x64, darwin-arm64, win32-x64

Co-Authored-By: claude-flow <ruv@ruv.net>

.github/workflows/build-diskann.yml

@@ -0,0 +1,188 @@
+name: Build DiskANN Native Modules
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'crates/ruvector-diskann/**'
+      - 'crates/ruvector-diskann-node/**'
+      - 'npm/packages/diskann/**'
+      - '.github/workflows/build-diskann.yml'
+  pull_request:
+    branches: [main]
+    paths:
+      - 'crates/ruvector-diskann/**'
+      - 'crates/ruvector-diskann-node/**'
+      - 'npm/packages/diskann/**'
+  workflow_dispatch:
+    inputs:
+      publish:
+        description: 'Publish to npm after build'
+        required: false
+        type: boolean
+        default: false
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        settings:
+          - host: ubuntu-22.04
+            target: x86_64-unknown-linux-gnu
+            platform: linux-x64-gnu
+          - host: ubuntu-22.04
+            target: aarch64-unknown-linux-gnu
+            platform: linux-arm64-gnu
+          - host: macos-14
+            target: x86_64-apple-darwin
+            platform: darwin-x64
+          - host: macos-14
+            target: aarch64-apple-darwin
+            platform: darwin-arm64
+          - host: windows-2022
+            target: x86_64-pc-windows-msvc
+            platform: win32-x64-msvc
+
+    name: Build DiskANN ${{ matrix.settings.platform }}
+    runs-on: ${{ matrix.settings.host }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.settings.target }}
+
+      - name: Cache Rust
+        uses: Swatinem/rust-cache@v2
+        with:
+          key: diskann-${{ matrix.settings.target }}
+
+      - name: Install cross-compilation tools (Linux ARM64)
+        if: matrix.settings.platform == 'linux-arm64-gnu'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
+
+      - name: Install dependencies
+        working-directory: npm/packages/diskann
+        run: npm install --ignore-scripts --omit=optional --force
+
+      - name: Build native module
+        working-directory: npm/packages/diskann
+        run: npx napi build --platform --release --cargo-cwd ../../../crates/ruvector-diskann-node --target ${{ matrix.settings.target }}
+        env:
+          CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER: aarch64-linux-gnu-gcc
+
+      - name: Prepare artifact
+        shell: bash
+        run: |
+          mkdir -p diskann-artifacts/${{ matrix.settings.platform }}
+          NODE_FILE=$(find npm/packages/diskann -name "*.node" -type f | head -1)
+          if [ -z "$NODE_FILE" ]; then
+            echo "ERROR: No .node file found"
+            exit 1
+          fi
+          echo "Found: $NODE_FILE"
+          cp -v "$NODE_FILE" "diskann-artifacts/${{ matrix.settings.platform }}/"
+
+      - name: Test native module (native platform only)
+        if: |
+          (matrix.settings.platform == 'linux-x64-gnu') ||
+          (matrix.settings.platform == 'darwin-arm64') ||
+          (matrix.settings.platform == 'win32-x64-msvc')
+        continue-on-error: true
+        working-directory: npm/packages/diskann
+        run: npm test
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: diskann-${{ matrix.settings.platform }}
+          path: diskann-artifacts/${{ matrix.settings.platform }}/*.node
+          if-no-files-found: error
+
+  publish:
+    name: Publish DiskANN Platform Packages
+    runs-on: ubuntu-22.04
+    needs: build
+    if: inputs.publish == true || startsWith(github.ref, 'refs/tags/v')
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+
+      - name: Create and publish platform packages
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: |
+          VERSION=$(node -p "require('./npm/packages/diskann/package.json').version")
+          echo "Publishing version: $VERSION"
+
+          for dir in artifacts/diskann-*/; do
+            platform=$(basename "$dir" | sed 's/diskann-//')
+            NODE_FILE=$(find "$dir" -name "*.node" | head -1)
+            if [ -z "$NODE_FILE" ]; then continue; fi
+
+            echo "=== Publishing @ruvector/diskann-${platform}@${VERSION} ==="
+            PKG_DIR="npm-pkg/diskann-${platform}"
+            mkdir -p "$PKG_DIR"
+
+            case "$platform" in
+              linux-x64-gnu)    OS="linux"; CPU="x64"; LIBC='"libc": ["glibc"],' ;;
+              linux-arm64-gnu)  OS="linux"; CPU="arm64"; LIBC='"libc": ["glibc"],' ;;
+              darwin-x64)       OS="darwin"; CPU="x64"; LIBC="" ;;
+              darwin-arm64)     OS="darwin"; CPU="arm64"; LIBC="" ;;
+              win32-x64-msvc)   OS="win32"; CPU="x64"; LIBC="" ;;
+            esac
+
+            NODE_NAME="ruvector-diskann.${platform}.node"
+            cp "$NODE_FILE" "$PKG_DIR/$NODE_NAME"
+
+            cat > "$PKG_DIR/package.json" << EOF
+          {
+            "name": "@ruvector/diskann-${platform}",
+            "version": "${VERSION}",
+            "os": ["${OS}"],
+            "cpu": ["${CPU}"],
+            ${LIBC}
+            "main": "${NODE_NAME}",
+            "files": ["${NODE_NAME}"],
+            "description": "DiskANN native bindings - ${platform}",
+            "license": "MIT",
+            "repository": {"type": "git", "url": "https://github.com/ruvnet/ruvector"},
+            "engines": {"node": ">= 18"},
+            "publishConfig": {"access": "public"}
+          }
+          EOF
+
+            cd "$PKG_DIR"
+            npm publish --access public || echo "Failed to publish @ruvector/diskann-${platform}"
+            cd ../..
+          done
+
+      - name: Publish main package
+        working-directory: npm/packages/diskann
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: npm publish --access public || echo "Package may already exist"

Cargo.lock

@@ -9101,6 +9101,36 @@ dependencies = [
  "wasm-bindgen-test",
 ]
 
+[[package]]
+name = "ruvector-diskann"
+version = "2.1.0"
+dependencies = [
+ "bincode 2.0.1",
+ "bytemuck",
+ "memmap2",
+ "parking_lot 0.12.5",
+ "rand 0.8.5",
+ "rayon",
+ "serde",
+ "serde_json",
+ "tempfile",
+ "thiserror 2.0.18",
+]
+
+[[package]]
+name = "ruvector-diskann-node"
+version = "2.1.0"
+dependencies = [
+ "napi",
+ "napi-build",
+ "napi-derive",
+ "parking_lot 0.12.5",
+ "ruvector-diskann",
+ "serde",
+ "serde_json",
+ "tokio",
+]
+
 [[package]]
 name = "ruvector-dither"
 version = "0.1.0"