ci: switch release workflow to Linux cross-compilation (#50)

* ci: cross-compile release assets on Linux

* ci: use OS runners and Linux-only cross-arch builds

* ci: sanitize non-release artifact version tags

.github/workflows/release.yaml

@@ -4,13 +4,16 @@ on:
   release:
     types:
       - published
+  pull_request:
+    paths:
+      - .github/workflows/release.yaml
 
 permissions:
-  contents: write
+  contents: read
 
 jobs:
   build:
-    name: Build ${{ matrix.target_os }}-${{ matrix.arch }}
+    name: Build ${{ matrix.target_os }}-${{ matrix.target_arch }}
     runs-on: ${{ matrix.runs_on }}
     strategy:
       fail-fast: false
@@ -18,19 +21,19 @@ jobs:
         include:
           - runs_on: ubuntu-24.04
             target_os: linux
-            arch: x64
+            target_arch: x64
             ext: ''
-          - runs_on: ubuntu-24.04-arm
+          - runs_on: ubuntu-24.04
             target_os: linux
-            arch: arm64
+            target_arch: arm64
             ext: ''
           - runs_on: macos-14
             target_os: macos
-            arch: arm64
+            target_arch: arm64
             ext: ''
           - runs_on: windows-2022
             target_os: windows
-            arch: x64
+            target_arch: x64
             ext: .exe
 
     steps:
@@ -45,26 +48,41 @@ jobs:
         run: dart run build_runner build --delete-conflicting-outputs
 
       - name: Build executable
-        run: dart compile exe bin/code_work_spawner.dart -o dist/code_work_spawner${{ matrix.ext }}
+        shell: bash
+        run: |
+          mkdir -p dist
+          if [[ "${{ matrix.target_os }}" == "linux" ]]; then
+            dart compile exe bin/code_work_spawner.dart --target-os=linux --target-arch=${{ matrix.target_arch }} -o dist/code_work_spawner${{ matrix.ext }}
+          else
+            dart compile exe bin/code_work_spawner.dart -o dist/code_work_spawner${{ matrix.ext }}
+          fi
 
       - name: Prepare release asset
         shell: bash
         run: |
           mkdir -p release-assets
-          asset_name="code_work_spawner-${{ github.ref_name }}-${{ matrix.target_os }}-${{ matrix.arch }}${{ matrix.ext }}"
+          if [[ "${GITHUB_EVENT_NAME}" == "release" ]]; then
+            version_tag="${GITHUB_REF_NAME}"
+          else
+            version_tag="${GITHUB_REF_NAME//\//-}"
+          fi
+          asset_name="code_work_spawner-${version_tag}-${{ matrix.target_os }}-${{ matrix.target_arch }}${{ matrix.ext }}"
           cp "dist/code_work_spawner${{ matrix.ext }}" "release-assets/${asset_name}"
 
       - name: Upload build artifact
         uses: actions/upload-artifact@v4
         with:
-          name: code_work_spawner-${{ matrix.target_os }}-${{ matrix.arch }}
+          name: code_work_spawner-${{ matrix.target_os }}-${{ matrix.target_arch }}
           path: release-assets/*
           if-no-files-found: error
 
   publish:
     name: Upload release assets
+    if: github.event_name == 'release'
     runs-on: ubuntu-latest
     needs: build
+    permissions:
+      contents: write
     steps:
       - name: Download build artifacts
         uses: actions/download-artifact@v4