feat: add single-image compose deliverable and CI

.github/workflows/ci.yml

@@ -0,0 +1,38 @@
+name: ci
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  backend:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: backend
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v5
+      - run: uv sync --frozen
+      - run: uv run ruff check .
+      - run: uv run ruff format --check .
+      - run: uv run mypy app
+      - run: uv run pytest
+
+  frontend:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: frontend
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: frontend/package-lock.json
+      - run: npm ci
+      - run: npm run typecheck
+      - run: npm run lint
+      - run: npm run build