feat: add a release-assets action

ARCHITECTURE.md

@@ -23,6 +23,7 @@ Every public automation is a composite action in a named directory:
 ```text
 compas-actions/ci@v1
 compas-actions/prepare-release@v1
+compas-actions/release-assets@v1
 compas-actions/github-release@v1
 compas-actions/docs@v1
 compas-actions/pr-checks@v1

README.md

@@ -15,6 +15,7 @@ is a clean break rather than a compatibility bundle.
 | `release-pr` | Bump the version and open a human-reviewed release PR |
 | `release-check` | Validate release metadata in PR and post-merge workflows |
 | `prepare-release` | Build distributions and upload release artifacts |
+| `release-assets` | Run an Invoke task and upload what it produces as release assets |
 | `github-release` | Download artifacts and create a tagged GitHub release |
 | `docs` | Build MkDocs or deploy a version with Mike |
 | `pr-checks` | Require a changelog update or an explicit skip label |
@@ -61,6 +62,26 @@ uses four separate jobs:
    `id-token: write`.
 4. `github-release` creates the release with `contents: write`.
 
+A package that ships more than its distributions -- generated protobuf
+bindings, schema bundles, compiled assets -- adds a `release-assets` job
+alongside `prepare-release`. Both upload to the same artifact name, so
+`github-release` attaches whatever is there:
+
+```yaml
+assets:
+  needs: release
+  runs-on: ubuntu-latest
+  steps:
+    - uses: compas-dev/compas-actions/release-assets@v1
+      with:
+        invoke-tasks: create-class-assets
+        paths: dist/proto/*.zip
+```
+
+Use it instead of `prepare-release`'s `release-assets` input when the build is
+slow or needs tools the wheel build does not, since that input ties asset
+generation to `invoke pre-build` on every matrix job.
+
 The trusted publisher remains explicit in the caller:
 
 ```yaml

release-assets/action.yml

@@ -0,0 +1,130 @@
+name: Build release assets
+description: Run an Invoke task and upload what it produces as release assets
+
+inputs:
+  python-version:
+    description: Python version used to build the assets
+    default: "3.12"
+  management-tool:
+    description: Dependency manager used for the build (uv or conda)
+    default: uv
+  extras:
+    description: Extras needed by the build tasks
+    default: dev
+  conda-environment:
+    description: Name of the Conda environment
+    default: compas
+  environment-file:
+    description: Explicit Conda environment file; OS-specific files are detected when omitted
+    default: ""
+  invoke-tasks:
+    description: Space-separated Invoke tasks that produce the assets
+    default: create-class-assets
+  paths:
+    description: Multiline paths/globs to upload
+    default: dist/proto/*.zip
+  artifact-name:
+    description: Workflow artifact the assets are uploaded as
+    default: github-release-assets
+  if-no-files-found:
+    description: Behaviour when no file matches paths (error, warn or ignore)
+    default: error
+  submodules:
+    description: Checkout submodules (false, true, or recursive)
+    default: "false"
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/checkout@v7.0.1
+      with:
+        submodules: ${{ inputs.submodules }}
+        persist-credentials: false
+
+    - uses: actions/setup-python@v7.0.0
+      if: inputs.management-tool == 'uv'
+      with:
+        python-version: ${{ inputs.python-version }}
+
+    - uses: astral-sh/setup-uv@v10.0.0
+      if: inputs.management-tool == 'uv'
+
+    - name: Validate management tool
+      shell: bash
+      env:
+        MANAGEMENT_TOOL: ${{ inputs.management-tool }}
+      run: |
+        case "$MANAGEMENT_TOOL" in
+          uv|conda) ;;
+          *) echo "::error::management-tool must be uv or conda"; exit 1 ;;
+        esac
+
+    - name: Set up Conda
+      if: inputs.management-tool == 'conda'
+      uses: conda-incubator/setup-miniconda@v4.0.1
+      with:
+        miniconda-version: latest
+        channels: conda-forge
+        activate-environment: ${{ inputs.conda-environment }}
+        python-version: ${{ inputs.python-version }}
+
+    - name: Select Conda environment file
+      if: inputs.management-tool == 'conda'
+      id: conda-file
+      shell: bash -el {0}
+      env:
+        EXPLICIT_FILE: ${{ inputs.environment-file }}
+      run: |
+        if [[ -n "$EXPLICIT_FILE" ]]; then
+          candidate="$EXPLICIT_FILE"
+        elif [[ "$RUNNER_OS" == "Windows" && -f env_win.yml ]]; then
+          candidate=env_win.yml
+        elif [[ "$RUNNER_OS" == "macOS" && -f env_osx.yml ]]; then
+          candidate=env_osx.yml
+        elif [[ "$RUNNER_OS" == "Linux" && -f env_linux.yml ]]; then
+          candidate=env_linux.yml
+        else
+          candidate=environment.yml
+        fi
+
+        if [[ ! -f "$candidate" ]]; then
+          echo "::error::Conda environment file not found: $candidate"
+          exit 1
+        fi
+        echo "path=$candidate" >> "$GITHUB_OUTPUT"
+
+    - name: Install Conda environment
+      if: inputs.management-tool == 'conda'
+      shell: bash -el {0}
+      env:
+        CONDA_ENVIRONMENT: ${{ inputs.conda-environment }}
+        ENVIRONMENT_FILE: ${{ steps.conda-file.outputs.path }}
+      run: conda env update -f "$ENVIRONMENT_FILE" -n "$CONDA_ENVIRONMENT"
+
+    - name: Install project
+      if: inputs.management-tool == 'uv'
+      shell: bash
+      env:
+        EXTRAS: ${{ inputs.extras }}
+      run: |
+        requirement="."
+        [[ -n "$EXTRAS" ]] && requirement=".[$EXTRAS]"
+        uv pip install --system -e "$requirement"
+
+    - name: Build assets
+      shell: bash -el {0}
+      env:
+        INVOKE_TASKS: ${{ inputs.invoke-tasks }}
+      run: |
+        if [[ -z "$INVOKE_TASKS" ]]; then
+          echo "::error::invoke-tasks must name at least one task"
+          exit 1
+        fi
+        invoke $INVOKE_TASKS
+
+    - name: Upload release assets
+      uses: actions/upload-artifact@v7.0.1
+      with:
+        name: ${{ inputs.artifact-name }}
+        path: ${{ inputs.paths }}
+        if-no-files-found: ${{ inputs.if-no-files-found }}