ci: replace gitlab ci with gitea workflow running pytest and prek

.gitea/workflows/ci.yaml

@@ -0,0 +1,34 @@
+name: CI
+
+# Tests and prek on every push and pull request.
+on:
+  push:
+  pull_request:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install mise
+        run: |
+          curl -fsSL https://mise.run | sh
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+
+      - name: Install pinned tools
+        run: mise install
+
+      # The prod group needs MySQL headers; tests run on SQLite.
+      - name: Install Python dependencies
+        run: mise exec -- uv sync --locked --no-group prod
+
+      - name: Unit tests
+        run: mise exec -- uv run --no-sync pytest
+
+  # The hooks in prek.toml.
+  prek:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: j178/prek-action@v1

.gitlab-ci.yml

@@ -1,19 +0,0 @@
-image: python:latest
-
-variables:
-  PIP_CACHE_DIR: "$CI_PROJECT_DIR/pip-cache"
-
-cache:
-  paths:
-    - "$CI_PROJECT_DIR/pip-cache"
-  key: "$CI_PROJECT_ID"
-
-before_script:
-  - pip install -r requirements.txt
-  - pip install coverage
-
-test:
-  script:
-    - coverage run --source=dpdapi --omit=dpdapi/migrations/* manage.py test -v2
-    - coverage report
-  coverage: '/TOTAL.+ ([0-9]{1,3}%)/'