M05-L03 exercise — Package a repeatable procedure
Starting checkpoint: CP03. Figures: SS11-01, SS11-02, D10.
Create the skill directory and complete SKILL.md with required metadata, inputs, procedure, output columns, and missing-source behavior. Add and link the focused extraction reference. Review filename, name match, YAML delimiters, and reference path. Submit the files plus two anticipated failure cases. If a maintained example already exists, improve one identified weakness in a disposable copy and explain the change. Do not claim runtime activation from static validation.
Completion record
Record the checkpoint, changed files, checks actually performed, results, and open limitations. Keep expected output distinct from observed output. Preserve the starting copy and review the final diff before considering the artifact complete.

