Wrap the workflow header comment to the yamllint line limit

No issue closed: CI change requested by S01.

.gitea/workflows/ci.yml

@@ -1,46 +1,53 @@
-# Continuous integration for the squirrel census project: runs the pytest tests
-# on Python 3.13 for every push and pull request. Read by Gitea Actions (a
-# runner must be registered for the repository). It changes nothing outside the
-# repository and uses no secret. Decision: MIL-001 task "Add CI workflow".
-# Host: Gitea Actions; uses only github.* contexts, so it also runs on GitHub.
-
-name: Tests
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-
-permissions:
-  contents: read
-
-env:
-  PYTHON_VERSION: "3.13"
-  PIP_VERSION: "26.2.1"
-
-concurrency:
-  group: tests-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  pytest:
-    name: Run the tests
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    steps:
-      - name: Check out the code
-        uses: actions/checkout@v4.2.2
-
-      - name: Set up Python
-        uses: actions/setup-python@v5.6.0
-        with:
-          python-version: ${{ env.PYTHON_VERSION }}
-
-      - name: Create the virtual environment and install
-        run: |
-          python -m venv .venv
-          .venv/bin/python -m pip install --upgrade "pip==${PIP_VERSION}"
-          .venv/bin/python -m pip install -e ".[dev]"
-
-      - name: Run the tests
-        run: .venv/bin/python -m pytest
+# Continuous integration for the squirrel census project: lints the YAML and
+# workflow files and runs the pytest tests on Python 3.13 for every push and
+# pull request. Read by Gitea Actions (a runner must be registered for the
+# repository). It changes nothing outside the repository and uses no secret.
+# Decision: MIL-001 task "Add CI workflow".
+# Host: Gitea Actions; uses only github.* contexts, so it also runs on GitHub.
+
+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+env:
+  PYTHON_VERSION: "3.13"
+  PIP_VERSION: "26.2.1"
+
+concurrency:
+  group: tests-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  pytest:
+    name: Run the tests
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - name: Check out the code
+        uses: actions/checkout@v4.2.2
+
+      - name: Set up Python
+        uses: actions/setup-python@v5.6.0
+        with:
+          python-version: ${{ env.PYTHON_VERSION }}
+
+      - name: Create the virtual environment and install
+        run: |
+          python -m venv .venv
+          .venv/bin/python -m pip install --upgrade "pip==${PIP_VERSION}"
+          .venv/bin/python -m pip install -e ".[dev]"
+
+      - name: Lint the YAML files
+        run: .venv/bin/python -m yamllint -c .yamllint.yml .gitea .yamllint.yml
+
+      - name: Lint the workflow files
+        run: .venv/bin/actionlint .gitea/workflows/*.yml
+
+      - name: Run the tests
+        run: .venv/bin/python -m pytest

.yamllint.yml

@@ -6,3 +6,6 @@ rules:
     max: 100
   truthy:
     check-keys: false
+  # Line endings are normalised by git (LF in the repository, CRLF in some
+  # Windows checkouts), so the rule would fail on a local checkout only.
+  new-lines: disable

README.md

@@ -20,7 +20,7 @@ There are no runtime dependencies: the program uses only the Python standard lib
 ## Set up
 
 Create a local virtual environment named `.venv` in the project folder, upgrade `pip`
-and install the project with its development tools (pytest, ruff, mypy).
+and install the project with its development tools (pytest, ruff, mypy, yamllint, actionlint).
 
 ### Windows powershell
 
@@ -90,7 +90,8 @@ it is present.
 
 The workflow [`.gitea/workflows/ci.yml`][ci] runs for every push to `main` and for every
 pull request. It sets up Python 3.13, creates a `.venv`, upgrades `pip`, installs the
-project with `.[dev]` and runs `python -m pytest`. It uses `github.*` contexts only, so
+project with `.[dev]`, lints the YAML and workflow files with `yamllint` and
+`actionlint`, and runs `python -m pytest`. It uses `github.*` contexts only, so
 it also runs on GitHub Actions.
 
 ## Build the source documentation

pyproject.toml

@@ -1,48 +1,49 @@
-# Project configuration for the squirrel census assignment (day 25).
-# Read by pip, setuptools and pytest. The decision to use the standard library
-# only is recorded in docs/adr/adr-0001-standard-library-instead-of-pandas.md.
-
-[build-system]
-requires = ["setuptools>=68"]
-build-backend = "setuptools.build_meta"
-
-[project]
-name = "squirrel"
-version = "0.1.0"
-description = "Count the squirrels of the 2018 Central Park Squirrel Census by primary fur colour."
-readme = "README.md"
-requires-python = ">=3.13"
-license = "AGPL-3.0-or-later"
-license-files = ["LICENSE"]
-dependencies = []
-classifiers = [
-  "Programming Language :: Python :: 3.13",
-  "Intended Audience :: Education",
-]
-
-[project.optional-dependencies]
-dev = ["pytest==9.1.1", "ruff==0.17.0", "mypy==2.4.0",
-  "pyyaml==6.0.3", "types-PyYAML==6.0.12.20260906"]
-
-[tool.setuptools.packages.find]
-where = ["src"]
-
-[tool.pytest.ini_options]
-pythonpath = ["src"]
-testpaths = ["tests"]
-
-[tool.ruff]
-line-length = 88
-src = ["src", "tests"]
-extend-exclude = ["docs"]
-
-[tool.ruff.lint]
-select = ["E", "F", "I", "UP", "B", "D"]
-ignore = ["D203", "D213"]
-
-[tool.mypy]
-strict = true
-files = ["src", "tests"]
-
-[tool.ruff.lint.per-file-ignores]
-"tests/**" = ["D"]
+# Project configuration for the squirrel census assignment (day 25).
+# Read by pip, setuptools and pytest. The decision to use the standard library
+# only is recorded in docs/adr/adr-0001-standard-library-instead-of-pandas.md.
+
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "squirrel"
+version = "0.1.0"
+description = "Count the squirrels of the 2018 Central Park Squirrel Census by primary fur colour."
+readme = "README.md"
+requires-python = ">=3.13"
+license = "AGPL-3.0-or-later"
+license-files = ["LICENSE"]
+dependencies = []
+classifiers = [
+  "Programming Language :: Python :: 3.13",
+  "Intended Audience :: Education",
+]
+
+[project.optional-dependencies]
+dev = ["pytest==9.1.1", "ruff==0.17.0", "mypy==2.4.0",
+  "pyyaml==6.0.3", "types-PyYAML==6.0.12.20260906",
+  "yamllint==1.38.0", "actionlint-py==1.7.12.25"]
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.pytest.ini_options]
+pythonpath = ["src"]
+testpaths = ["tests"]
+
+[tool.ruff]
+line-length = 88
+src = ["src", "tests"]
+extend-exclude = ["docs"]
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "UP", "B", "D"]
+ignore = ["D203", "D213"]
+
+[tool.mypy]
+strict = true
+files = ["src", "tests"]
+
+[tool.ruff.lint.per-file-ignores]
+"tests/**" = ["D"]

wiki/Install.da.md

@@ -2,7 +2,7 @@
 
 # Installation
 
-Projektet kræver **Python 3.13 eller nyere**. Det har ingen kørselsafhængigheder; `pytest`, `ruff` og `mypy` er udviklingsværktøjer.
+Projektet kræver **Python 3.13 eller nyere**. Det har ingen kørselsafhængigheder; `pytest`, `ruff`, `mypy`, `yamllint` og `actionlint` er udviklingsværktøjer.
 
 ## Windows PowerShell
 

wiki/Install.md

@@ -2,7 +2,7 @@
 
 # Install
 
-The project needs **Python 3.13 or later**. It has no runtime dependencies; `pytest`, `ruff` and `mypy` are development tools.
+The project needs **Python 3.13 or later**. It has no runtime dependencies; `pytest`, `ruff`, `mypy`, `yamllint` and `actionlint` are development tools.
 
 ## Windows PowerShell
 

wiki/Install.ms.md

@@ -2,7 +2,7 @@
 
 # Pemasangan
 
-Projek ini memerlukan **Python 3.13 atau lebih baharu**. Ia tiada kebergantungan masa jalan; `pytest`, `ruff` dan `mypy` ialah alat pembangunan.
+Projek ini memerlukan **Python 3.13 atau lebih baharu**. Ia tiada kebergantungan masa jalan; `pytest`, `ruff`, `mypy`, `yamllint` dan `actionlint` ialah alat pembangunan.
 
 ## Windows PowerShell