What the reviewer found
A GitHub Actions CI/CD best-practices instruction file for Copilot: the HTML comment is the closing end-of-document marker and the rm -rf is advice to clean temporary files inside a Docker RUN step. The file was cut at 48 KB but both flagged lines and the file's end are in the reviewed part.
What was read
The file as it ships in dhar174/custom_github_copilot_agent_builder:
.github/instructions/github-actions-ci-cd-best-practices.instructions.md
What the static scan said
The scan flagged 2things. The reviewer kept 0 and dismissed 2 as false.
P2Hidden instructions — false positiveRMRecursive force delete — false positive
How this review was made
Fable 5.1 read the files above on 7 September 2026 and answered three questions: is it dangerous to whoever installs it, is each scanner finding real, and what should the installer know. The verdict is bound to the file's hash; when the file changes, it is scanned afresh and reviewed again. A script that changes while the definition does not is not re-reviewed — that is a known gap. How the scan and the review work.