Build release artifacts before test checkouts

Author: TonisOrmisson

.github/workflows/release.yml

@@ -7,6 +7,12 @@ on:
   push:
     tags:
       - "v*"
+  workflow_dispatch:
+    inputs:
+      release_ref:
+        description: "Existing release tag to rebuild and publish idempotently"
+        required: true
+        type: string
 
 permissions:
   contents: read
@@ -16,6 +22,19 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
+        with:
+          ref: ${{ inputs.release_ref || github.ref }}
+      - uses: actions/setup-python@v7
+        with:
+          python-version: "3.13"
+      - run: python -m pip install --upgrade pip build
+      - name: Verify required SPSS engine is publicly installable
+        run: >-
+          python -m pip download --only-binary=:all: --no-deps
+          --dest /tmp/openstatspec-engine-release
+          openstatspec-pyspssio==0.5.1.post2
+      - name: Build clean release distributions
+        run: python -m build
       - name: Checkout normative specification fixtures
         uses: actions/checkout@v7
         with:
@@ -28,19 +47,9 @@ jobs:
           repository: TonisOrmisson/pyspssio
           ref: e069adf33c70bcd9e8e6ee495106479463a84fa2
           path: openstatspec-pyspssio
-      - uses: actions/setup-python@v7
-        with:
-          python-version: "3.13"
-      - run: python -m pip install --upgrade pip build
-      - name: Verify required SPSS engine is publicly installable
-        run: >-
-          python -m pip download --only-binary=:all: --no-deps
-          --dest /tmp/openstatspec-engine-release
-          openstatspec-pyspssio==0.5.1.post2
       - run: python -m pip install ./openstatspec-pyspssio
       - run: python -m pip install -e ".[dev]"
       - run: python -m pytest -m "not services"
-      - run: python -m build
       - run: python -m venv /tmp/openstatspec-release-smoke
       - run: /tmp/openstatspec-release-smoke/bin/python -m pip install ./openstatspec-pyspssio
       - run: /tmp/openstatspec-release-smoke/bin/python -m pip install dist/*.whl
@@ -64,3 +73,5 @@ jobs:
           name: python-distributions
           path: dist/
       - uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          skip-existing: true