Update deployment health checks. Fix UI bugs.

.gitlab-ci.yml

@@ -135,7 +135,7 @@ verify:
     - |
       HEALTH_OK=0
       for i in 1 2 3 4 5 6; do
-        if docker compose -f $DOCKER_COMPOSE_FILE exec -T mvp-backend curl -sf http://localhost:3001/health > /dev/null 2>&1; then
+        if node -e "require('http').get('http://localhost:3001/health', (res) => { process.exit(res.statusCode === 200 ? 0 : 1) }).on('error', () => process.exit(1))" > /dev/null 2>&1; then
           echo "OK: Backend health check passed"
           HEALTH_OK=1
           break