ci: add production build test and smoke workflow

.gitea/workflows/ci.yaml

@@ -0,0 +1,80 @@
+name: ENGIN CI
+
+on:
+  push:
+    branches:
+      - main
+      - prod-hardening
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  production-check:
+    name: Build, test and smoke
+    runs-on: engin-ci
+    timeout-minutes: 20
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Clean previous CI resources
+        run: |
+          docker rm -f engin-ci-app 2>/dev/null || true
+          docker image rm -f engin-console:ci 2>/dev/null || true
+
+      - name: Build production image
+        run: docker build --tag engin-console:ci .
+
+      - name: Check installed dependencies
+        run: |
+          docker run --rm \
+            --entrypoint python \
+            engin-console:ci \
+            -m pip check
+
+      - name: Run test suite
+        run: |
+          docker run --rm \
+            --entrypoint python \
+            engin-console:ci \
+            -m unittest discover -v
+
+      - name: Validate Python syntax
+        run: |
+          docker run --rm \
+            --entrypoint python \
+            engin-console:ci \
+            -m compileall -q app.py engin tests final_pipeline.py
+
+      - name: Start application
+        run: |
+          docker run -d \
+            --name engin-ci-app \
+            engin-console:ci
+
+      - name: Verify Streamlit health
+        run: |
+          set -eu
+
+          attempt=1
+          while [ "$attempt" -le 30 ]; do
+            if docker exec engin-ci-app python -c \
+              "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8501/_stcore/health', timeout=3).read()"; then
+              exit 0
+            fi
+
+            sleep 2
+            attempt=$((attempt + 1))
+          done
+
+          docker logs engin-ci-app
+          exit 1
+
+      - name: Cleanup
+        if: always()
+        run: |
+          docker logs engin-ci-app 2>/dev/null || true
+          docker rm -f engin-ci-app 2>/dev/null || true
+          docker image rm -f engin-console:ci 2>/dev/null || true