Ensure CircleCI script fails on Jest test errors

- Added `set -e` to the CI script to exit immediately if any command returns a non-zero status.
- This change ensures that CircleCI will fail the build if errors are detected during Jest testing or any other command in the script.

scripts/test-all.sh

@@ -1,18 +1,23 @@
 #!/usr/bin/env bash
 
-cd $(git rev-parse --show-toplevel)
+# Exit immediately if a command exits with a non-zero status
+set -e
 
+# Change directory to the git repository root
+cd $(git rev-parse --show-toplevel)
 
+# Run linters
 npm --prefix=frontend run lint
 npm --prefix=backend run lint
 
+# Run fence checks
 npm --prefix=frontend run fences
 npm --prefix=backend run fences
 
+# Run Jest tests and ensure failure on error
 npm --prefix=frontend run test:ci
 npm --prefix=backend run test -- --no-cache
 
-
 echo "  _            _                             _"
 echo " | |          | |                           | |"
 echo " | |_ ___  ___| |_ ___   _ __   __ _ ___ ___| |"