ci: add CI test suite + deploy pipeline

- ci.yml: runs 607 tests + Docker build on push/PR
- deploy.yml: tests → build → GHCR push → Kamal deploy on main

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  push:
+    branches: [main, "feature/**"]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Install dependencies
+        run: uv pip install --system -r requirements.txt
+
+      - name: Run tests
+        run: pytest tests/ -v --tb=short
+
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build Docker image
+        run: docker build -t data-analyst:test .

.github/workflows/deploy.yml

@@ -0,0 +1,65 @@
+name: Deploy
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Install dependencies
+        run: uv pip install --system -r requirements.txt
+
+      - name: Run tests
+        run: pytest tests/ -v --tb=short
+
+  build-and-push:
+    needs: test
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          tags: ghcr.io/${{ github.repository }}:latest
+
+  deploy-production:
+    needs: build-and-push
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.3"
+
+      - name: Install Kamal
+        run: gem install kamal
+
+      - name: Deploy
+        run: kamal deploy
+        env:
+          KAMAL_REGISTRY_USERNAME: ${{ github.actor }}
+          KAMAL_REGISTRY_PASSWORD: ${{ secrets.GITHUB_TOKEN }}