ci: remove workflow configuration

Remove .github/workflows/tests.yml to disable Gitea Actions CI for now.

.github/workflows/tests.yml

@@ -1,68 +0,0 @@
-name: tests
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  core:
-    name: core (${{ matrix.os }}, py${{ matrix.python-version }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-        python-version: ["3.11", "3.12", "3.13"]
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install uv
-        uses: astral-sh/setup-uv@v3
-        with:
-          enable-cache: true
-          cache-dependency-glob: "uv.lock"
-
-      - name: Set up Python
-        run: uv python install ${{ matrix.python-version }}
-
-      - name: Sync core dependencies
-        run: uv sync --frozen --all-extras
-
-      - name: Install Tesseract (Ubuntu)
-        if: matrix.os == 'ubuntu-latest'
-        run: sudo apt-get update && sudo apt-get install -y tesseract-ocr
-
-      - name: Install Tesseract (macOS)
-        if: matrix.os == 'macos-latest'
-        run: brew install tesseract
-
-      - name: Run ruff
-        run: uv run ruff check src/ tests/
-
-      - name: Check formatting
-        run: uv run ruff format --check src/ tests/
-
-      - name: Run mypy
-        run: uv run mypy src/ocr_pipeline
-
-      - name: Run pytest
-        run: uv run pytest tests/ -q --maxfail=1
-
-  doctor-smoke:
-    name: doctor CLI smoke test
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: astral-sh/setup-uv@v3
-      - run: uv sync --frozen
-      - name: Install Tesseract
-        run: sudo apt-get update && sudo apt-get install -y tesseract-ocr
-      - name: Run doctor
-        run: uv run ocr-pipeline doctor