Wires the papermill-tests, nbval-tests, and testbook-tests skills into a single working GitHub Actions CI pipeline: parameterized execution (papermill) -> output regression (nbval) -> function unit tests (testbook) -> artifact upload (executed .ipynb + HTML report). Use when a team has notebook tests spread across the three tools but assembles the pipeline manually and needs a single authoritative workflow file with output stripping (nbstripout), pip caching, and structured failure reporting.