feat(backend): add foundation services and sql idempotency

.github/workflows/backend-foundation.yml

@@ -0,0 +1,64 @@
+name: Backend Foundation
+
+on:
+  pull_request:
+    branches:
+      - dev
+      - main
+  push:
+    branches:
+      - dev
+      - main
+
+jobs:
+  backend-foundation-makefile:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Validate backend make targets
+        run: |
+          make backend-help
+          make help | grep "backend-"
+
+      - name: Dry-run backend automation targets
+        run: |
+          make -n backend-enable-apis ENV=dev
+          make -n backend-bootstrap-dev ENV=dev
+          make -n backend-deploy-core ENV=dev
+          make -n backend-deploy-commands ENV=dev
+          make -n backend-deploy-workers ENV=dev
+          make -n backend-smoke-core ENV=dev
+          make -n backend-smoke-commands ENV=dev
+          make -n backend-logs-core ENV=dev
+
+  backend-services-tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        service:
+          - backend/core-api
+          - backend/command-api
+    defaults:
+      run:
+        working-directory: ${{ matrix.service }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: ${{ matrix.service }}/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        env:
+          AUTH_BYPASS: "true"
+          LLM_MOCK: "true"
+        run: npm test