chore: add lint/test workflows

.github/workflows/ci.yml

@@ -0,0 +1,100 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    name: Lint (Ruff)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Set up Python
+        run: uv python install 3.13
+
+      - name: Install dependencies
+        run: uv sync --extra dev
+
+      - name: Run Ruff linter
+        run: uv run ruff check .
+
+      - name: Run Ruff formatter check
+        run: uv run ruff format --check .
+
+  typecheck:
+    name: Type Check (ty)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Set up Python
+        run: uv python install 3.13
+
+      - name: Install dependencies
+        run: uv sync --extra dev
+
+      - name: Run ty
+        run: uv run ty check
+
+  test:
+    name: Test (Python ${{ matrix.python-version }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.11", "3.12", "3.13"]
+
+    services:
+      postgres:
+        image: postgres:18
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: test_db
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Set up Python ${{ matrix.python-version }}
+        run: uv python install ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: uv sync --extra dev
+
+      - name: Run tests with coverage
+        env:
+          DATABASE_URL: postgresql+asyncpg://postgres:postgres@localhost:5432/test_db
+        run: |
+          uv run pytest --cov --cov-report=xml --cov-report=term-missing
+
+      - name: Upload coverage to Codecov
+        if: matrix.python-version == '3.13'
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage.xml
+          fail_ci_if_error: false