Migrate to forgejo

.forgejo/workflows/docker.yml

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+name: Publish on DockerHub
+
+on:
+  push:
+    tags: ['*']
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: docker
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # The `docker` runner image is node-based and may not ship the docker CLI
+      # that the docker/* actions below drive; install it idempotently, as the
+      # sibling repos do for their Docker jobs.
+      - name: Ensure Docker CLI
+        run: |
+          set -eux
+          if ! command -v docker >/dev/null 2>&1; then
+            ARCH=$(uname -m)
+            curl -fsSL --retry 3 --retry-connrefused \
+              "https://download.docker.com/linux/static/stable/${ARCH}/docker-27.5.1.tgz" \
+              | tar xz --strip-components=1 -C /usr/local/bin docker/docker
+          fi
+          docker --version
+
+      # Marketplace actions must be referenced by full URL: this instance's
+      # DEFAULT_ACTIONS_URL points at code.forgejo.org, so only bare `actions/*`
+      # names resolve to GitHub automatically.
+      - name: Set up QEMU
+        uses: https://github.com/docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: https://github.com/docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: https://github.com/docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata for the Docker image
+        id: meta
+        uses: https://github.com/docker/metadata-action@v5
+        with:
+          images: schmelczera/great-ai
+
+      - name: Build and push
+        uses: https://github.com/docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64

.forgejo/workflows/docs.yml

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+name: Publish documentation
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'docs/**'
+      - 'great_ai/**'
+      - 'mkdocs.yaml'
+      - '.forgejo/workflows/docs.yml'
+  workflow_dispatch:
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    runs-on: docker
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          # The mkdocs git-revision-date plugin reads each page's git history.
+          fetch-depth: 0
+
+      - name: Install uv
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+
+      - name: Set up Python
+        run: uv python install 3.10
+
+      - name: Install dependencies
+        run: |
+          uv venv --python 3.10
+          uv pip install '.[dev]'
+
+      - name: Build documentation
+        run: |
+          . .venv/bin/activate
+          mkdocs build
+
+      # The old workflow ran `mkdocs gh-deploy` (GitHub Pages); on this instance
+      # built sites are rsynced into the host /pages mount that nginx serves,
+      # via the shared ci-actions/deploy-pages action — same as photos/reconcile.
+      - name: Deploy to pages mount
+        if: github.ref == 'refs/heads/main'
+        uses: http://forgejo:3000/andras/ci-actions/deploy-pages@main
+        with:
+          source: site
+          target: great-ai

.forgejo/workflows/publish.yml

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+name: Publish on PyPI
+
+on:
+  push:
+    tags: ['*']
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: docker
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+
+      - name: Set up Python
+        run: uv python install 3.10
+
+      # Forgejo cannot use PyPI trusted publishing (OIDC), so authenticate with
+      # an API token, the same way the sibling repos publish their packages.
+      - name: Build and publish
+        env:
+          FLIT_USERNAME: __token__
+          FLIT_PASSWORD: ${{ secrets.PYPI_TOKEN }}
+        run: uvx flit publish

.forgejo/workflows/test.yml

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+name: Check
+
+on:
+  push:
+    branches: [main, dev]
+  pull_request:
+    branches: [main, dev]
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ gitea.workflow }}-${{ gitea.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    name: Lint, format & type checks
+    runs-on: docker
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+
+      - name: Set up Python
+        run: uv python install 3.10
+
+      - name: Install dependencies
+        # --seed gives the venv its own pip, which scripts/check-python.sh shells
+        # out to for its linters; '.[dev]' provides the rest (mypy resolves the
+        # package's own imports against the installed tree).
+        run: |
+          uv venv --seed --python 3.10
+          uv pip install '.[dev]'
+
+      - name: Check code and formatting
+        run: |
+          . .venv/bin/activate
+          scripts/check-python.sh great_ai tests
+
+  test:
+    name: Test on Python ${{ matrix.python-version }}
+    runs-on: docker
+    strategy:
+      fail-fast: false
+      matrix:
+        # pyproject declares >= 3.7, but uv's standalone CPython and the current
+        # dependency floors (scikit-learn/numpy now require >= 3.9) no longer
+        # build on 3.7/3.8. Re-add those rows if the constraints are relaxed.
+        # The windows leg of the old GitHub matrix is dropped: this Forgejo
+        # instance only has a Linux `docker` runner.
+        python-version: ['3.9', '3.10']
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+
+      - name: Set up Python ${{ matrix.python-version }}
+        run: uv python install ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          uv venv --python ${{ matrix.python-version }}
+          uv pip install '.[dev]'
+
+      - name: Run tests
+        run: |
+          . .venv/bin/activate
+          pytest --doctest-modules --asyncio-mode=strict