ci: add automation folder to coverage reporting

Include automation/ in pytest coverage measurement alongside
core/ and api/ to track test coverage for workflow scripts
and generators.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: MarkusNeusinger

.github/workflows/ci-tests.yml

@@ -96,7 +96,7 @@ jobs:
       run: |
         uv run pytest tests/unit tests/integration tests/e2e \
           -v --tb=short \
-          --cov=core --cov=api \
+          --cov=core --cov=api --cov=automation \
           --cov-report=term-missing \
           --cov-report=xml
       # Tests include: