chore(ci): Add pre-release workflow

Author: effigies

.github/workflows/prerelease.yml

@@ -0,0 +1,89 @@
+name: Prerelease tests
+
+on:
+  push:
+    branches:
+      - ci/prerelease
+  schedule:
+    - cron: '0 0 * * 1'
+  # Allow job to be triggered manually from GitHub interface
+  workflow_dispatch:
+
+defaults:
+  run:
+    shell: bash
+
+# Force tox and pytest to use color
+env:
+  FORCE_COLOR: true
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    # Check each OS, all supported Python, minimum versions and latest releases
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ['ubuntu-latest']
+        python-version: ['3.12', '3.13', '3.14']
+
+    env:
+      DEPENDS: pre
+
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+        with:
+          path: ~/.cache/templateflow
+          key: templateflow-v1
+      - name: Install dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y --no-install-recommends graphviz
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Display Python version
+        run: python -c "import sys; print(sys.version)"
+      - name: Install tox
+        run: |
+          uv tool install --with=tox-uv --with=tox-gh-actions tox
+      - name: Show tox config
+        run: tox c
+      - name: Setup test suite
+        run: tox run -vv --notest
+      - name: Run test suite
+        id: pre
+        run: tox -v --skip-pkg-install --exit-and-dump-after 1200
+      - name: Minimize uv cache
+        run: uv cache prune --ci
+        if: ${{ always() }}
+      - name: Create issue
+        # Workflows triggered by schedule only notify the workflow creator
+        # So let's open an issue to make sure this is visible to all
+        if: ${{ steps.pre.outcome != 'success' }}
+        uses: JasonEtco/create-an-issue@1b14a70e4d8dc185e5cc76d3bec9eab20257b2c5 # v2.9.2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          run_id: ${{ github.run_id }}
+          repository: ${{ github.repository }}
+          workflow_name: PRE-RELEASE TESTS
+        with:
+          filename: .github/workflow_failure.md
+          update_existing: true
+          search_existing: open
+      - name: Return failure
+        if: ${{ steps.pre.outcome != 'success' }}
+        run: exit 1

.github/workflows/workflow_failure.md

@@ -0,0 +1,7 @@
+---
+title: ":rotating_light: {{ env.workflow_name }}: failure"
+---
+
+The run `{{ env.run_id }}` of the workflow {{ env.workflow_name }} failed.
+
+You can view [the log](https://github.com/{{ env.repository }}/actions/runs/{{ env.run_id }})