feat: documents and session tokens

.github/workflows/check.yml

@@ -1,21 +1,21 @@
 # Forgejo and Gitea Actions both read .github/workflows when their own folder is absent.
+# On Forgejo, if the runner's default action mirror lacks setup-pixi, write it as
+# https://github.com/prefix-dev/setup-pixi@v0.9.4.
 name: check
 on: [push, pull_request]
 jobs:
   check:
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
+        environment: [default, py310]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: prefix-dev/setup-pixi@v0.9.4
         with:
-          python-version: "3.12"
-      - name: Second schema validator
-        run: python3 -m pip install jsonschema referencing
+          pixi-version: v0.69.0
+          environments: ${{ matrix.environment }}
       - name: Check the repository
-        run: python3 tools/check.py
-      - name: Lint Markdown
-        if: matrix.os == 'ubuntu-latest'
-        run: npx --yes markdownlint-cli@0.48.0 '**/*.md'
+        run: pixi run --environment ${{ matrix.environment }} check