feat(HAI-108): remove binary builds and configure npm publishing

- Remove binary build steps from CI and delete release/test-release workflows
- Replace release workflow with npm publish via version.yml and changesets
- Configure all packages (cli, core, dashboard, engine) for npm publishing
- Add package-config tests to verify publishConfig and package metadata
- Update README and documentation to reflect npm-based distribution

.github/workflows/test-release.yml

@@ -1,142 +0,0 @@
-name: Test Release
-
-on:
-  workflow_dispatch:
-
-jobs:
-  build:
-    name: Test Build (${{ matrix.binary }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: ubuntu-latest
-            target: bun-linux-x64
-            binary: hai-linux-x64
-          - os: macos-latest
-            target: bun-darwin-arm64
-            binary: hai-darwin-arm64
-          - os: macos-13
-            target: bun-darwin-x64
-            binary: hai-darwin-x64
-          - os: windows-latest
-            target: bun-windows-x64
-            binary: hai-windows-x64.exe
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: "22"
-          cache: pnpm
-
-      - name: Install Bun
-        uses: oven-sh/setup-bun@v2
-
-      - name: Install dependencies
-        run: pnpm install
-
-      - name: Build
-        run: pnpm build
-
-      - name: Build standalone binary
-        run: pnpm --filter hai build:exe -- --target ${{ matrix.target }}
-
-      - name: Rename binary with platform and arch
-        run: |
-          PLATFORM=$(uname -s | tr '[:upper:]' '[:lower:]')
-          ARCH=$(uname -m)
-          case "$ARCH" in
-            x86_64) ARCH="x64" ;;
-            aarch64) ARCH="arm64" ;;
-          esac
-          cp packages/cli/dist/hai packages/cli/dist/hai-${PLATFORM}-${ARCH}
-
-      # Code signing steps — activate when cross-platform matrix is in place (HAI-079)
-      # Signing is skipped gracefully when secrets are not configured
-      - name: Sign macOS binaries
-        if: runner.os == 'macOS' && env.APPLE_CERTIFICATE_BASE64 != ''
-        env:
-          APPLE_CERTIFICATE_BASE64: ${{ secrets.APPLE_CERTIFICATE_BASE64 }}
-          APPLE_CERTIFICATE_PASSWORD: ${{ secrets.APPLE_CERTIFICATE_PASSWORD }}
-          APPLE_IDENTITY: ${{ secrets.APPLE_IDENTITY }}
-          APPLE_ID: ${{ secrets.APPLE_ID }}
-          APPLE_TEAM_ID: ${{ secrets.APPLE_TEAM_ID }}
-          APPLE_APP_PASSWORD: ${{ secrets.APPLE_APP_PASSWORD }}
-        run: |
-          for binary in packages/cli/dist/hai-darwin-*; do
-            [ -f "$binary" ] && bash scripts/sign-macos.sh "$binary"
-          done
-
-      - name: Sign Windows binaries
-        if: runner.os == 'Windows' && env.WINDOWS_CERTIFICATE_BASE64 != ''
-        env:
-          WINDOWS_CERTIFICATE_BASE64: ${{ secrets.WINDOWS_CERTIFICATE_BASE64 }}
-          WINDOWS_CERTIFICATE_PASSWORD: ${{ secrets.WINDOWS_CERTIFICATE_PASSWORD }}
-        run: |
-          Get-ChildItem packages/cli/dist/hai-windows-*.exe | ForEach-Object {
-            & .\scripts\sign-windows.ps1 $_.FullName
-          }
-        shell: pwsh
-
-      - name: Generate checksum (Linux)
-        if: runner.os == 'Linux'
-        run: |
-          cd packages/cli/dist
-          sha256sum ${{ matrix.binary }} > ${{ matrix.binary }}.sha256
-
-      - name: Generate checksum (macOS)
-        if: runner.os == 'macOS'
-        run: |
-          cd packages/cli/dist
-          shasum -a 256 ${{ matrix.binary }} > ${{ matrix.binary }}.sha256
-
-      - name: Generate checksum (Windows)
-        if: runner.os == 'Windows'
-        shell: pwsh
-        run: |
-          cd packages/cli/dist
-          $hash = (Get-FileHash -Algorithm SHA256 "${{ matrix.binary }}").Hash.ToLower()
-          "$hash  ${{ matrix.binary }}" | Out-File -Encoding ascii "${{ matrix.binary }}.sha256"
-
-      - name: Smoke test (Unix)
-        if: runner.os != 'Windows'
-        run: |
-          chmod +x packages/cli/dist/${{ matrix.binary }}
-          packages/cli/dist/${{ matrix.binary }} --help
-
-      - name: Smoke test (Windows)
-        if: runner.os == 'Windows'
-        run: .\packages\cli\dist\${{ matrix.binary }} --help
-
-      - name: Upload binary artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: ${{ matrix.binary }}
-          path: |
-            packages/cli/dist/${{ matrix.binary }}
-            packages/cli/dist/${{ matrix.binary }}.sha256
-
-  collect:
-    name: Collect Artifacts
-    needs: build
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Download all artifacts
-        uses: actions/download-artifact@v4
-        with:
-          path: artifacts
-
-      - name: Upload combined archive
-        uses: actions/upload-artifact@v4
-        with:
-          name: hai-all-platforms
-          path: artifacts/**/*