The following value must be quoted, a YAML syntax error is generated due to unquoted []:
description: [Critical] Best practice for Rust coding. Always activate this skill before authoring Rust code or answering questions about Rust.
Example of what Codex reports:
⚠ /workspaces/project/.agents/skills/rust-best-practice/SKILL.md: invalid YAML: description: invalid type: sequence, expected a string at line 2 column 14
⚠ Skipped loading 1 skill(s) due to invalid SKILL.md files.
The following value must be quoted, a YAML syntax error is generated due to unquoted
[]:Example of what Codex reports: