baoyu-format-markdown

The skill coherently implements a local markdown formatting workflow: it analyzes input, optionally manipulates frontmatter, applies formatting, and outputs a -formatted.md. It leverages a runtime (bun) to execute a local script, which is a reasonable pattern for developer-focused tooling. There are no credentials, no external data exfiltration, and no unnecessary elevated permissions described. Overall, the footprint is benign and proportionate to the stated purpose, with moderate supply-chain risk attributable to the use of an external runtime (bun) to run a local script.