ci: add manual artifact build workflow

.github/workflows/build-artifacts-manual.yml

@@ -0,0 +1,110 @@
+name: Build artifacts (manual)
+
+on:
+  workflow_dispatch:
+    inputs:
+      build_group:
+        description: which artifacts to build
+        required: true
+        default: linux
+        type: choice
+        options:
+          - linux
+          - macos
+          - all
+      libghostty_optimize:
+        description: libghostty-vt optimize mode for this build
+        required: true
+        default: ReleaseSafe
+        type: choice
+        options:
+          - ReleaseSafe
+          - ReleaseFast
+          - ReleaseSmall
+          - Debug
+
+permissions:
+  contents: read
+
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: x86_64-unknown-linux-musl
+            os: ubuntu-latest
+            name: herdr-linux-x86_64
+            group: linux
+          - target: aarch64-unknown-linux-musl
+            os: ubuntu-latest
+            name: herdr-linux-aarch64
+            group: linux
+          - target: x86_64-apple-darwin
+            os: macos-latest
+            name: herdr-macos-x86_64
+            group: macos
+          - target: aarch64-apple-darwin
+            os: macos-latest
+            name: herdr-macos-aarch64
+            group: macos
+
+    if: ${{ inputs.build_group == 'all' || inputs.build_group == matrix.group }}
+    runs-on: ${{ matrix.os }}
+    env:
+      LIBGHOSTTY_VT_OPTIMIZE: ${{ inputs.libghostty_optimize }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: ${{ matrix.target }}
+
+      - name: Install Zig
+        uses: mlugg/setup-zig@v2
+        with:
+          version: 0.15.2
+
+      - name: Install Linux build tools
+        if: runner.os == 'Linux'
+        run: sudo apt-get update && sudo apt-get install -y cmake ninja-build musl-tools gcc-aarch64-linux-gnu crossbuild-essential-arm64
+
+      - name: Install macOS build tools
+        if: runner.os == 'macOS'
+        run: brew install cmake ninja
+
+      - name: Set Linux aarch64 linker
+        if: matrix.target == 'aarch64-unknown-linux-musl'
+        run: echo "CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=aarch64-linux-gnu-gcc" >> $GITHUB_ENV
+
+      - name: Remove Zig caches
+        run: rm -rf .zig-cache vendor/libghostty-vt/.zig-cache vendor/libghostty-vt/zig-out
+
+      - name: Build
+        run: cargo build --release --locked --target ${{ matrix.target }}
+
+      - name: Package artifact
+        run: |
+          cp target/${{ matrix.target }}/release/herdr ${{ matrix.name }}
+          ./${{ matrix.name }} --version
+          file ${{ matrix.name }} > BUILD_INFO.txt
+          {
+            echo "commit=$GITHUB_SHA"
+            echo "target=${{ matrix.target }}"
+            echo "libghostty_vt_optimize=$LIBGHOSTTY_VT_OPTIMIZE"
+          } >> BUILD_INFO.txt
+          python3 -c "import hashlib, pathlib; artifact = pathlib.Path('${{ matrix.name }}'); print(f'sha256={hashlib.sha256(artifact.read_bytes()).hexdigest()}  {artifact.name}')" >> BUILD_INFO.txt
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.name }}-${{ inputs.libghostty_optimize }}
+          path: |
+            ${{ matrix.name }}
+            BUILD_INFO.txt
+          retention-days: 7