test: restore tracked suite and enforce CI test presence

Author: seanap

.github/workflows/ci-cd.yml

@@ -31,11 +31,11 @@ jobs:
 
       - name: Run unit tests
         run: |
-          if [ -d tests ] && ls tests/test_*.py >/dev/null 2>&1; then
-            python -m unittest discover -s tests -p "test_*.py" -v
-          else
-            echo "No repository tests found; skipping unit tests."
+          if [ ! -d tests ] || ! ls tests/test_*.py >/dev/null 2>&1; then
+            echo "Required test suite is missing from repository."
+            exit 1
           fi
+          python -m unittest discover -s tests -p "test_*.py" -v
 
   docker:
     runs-on: ubuntu-latest

.gitignore

@@ -39,4 +39,10 @@ chronicle-ui/coverage/
 # Local AI/dev orchestration artifacts
 .codex/
 _bmad*/
-tests/
+
+# Python test/coverage artifacts
+.pytest_cache/
+.coverage
+.coverage.*
+coverage.xml
+htmlcov/