Add dependabot and CI/CD for dependency management

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "03:00"
+      timezone: "UTC"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+    assignees:
+      - "repo-owner"

.github/workflows/test.yml

@@ -0,0 +1,41 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    name: Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Install dependencies
+        run: uv sync --all-groups
+
+      - name: Lint with ruff
+        run: uv run ruff check .
+
+      - name: Run tests
+        run: uv run pytest
+
+      - name: Security audit
+        run: uv run pip-audit