You MUST use this skill before changing, enhancing, or refactoring any existing functionality. Use when the code already exists and you are altering its behavior, performance, or structure — not fixing a bug. Stronger signals: "modify", "refactor", "optimize", "improve", "change how X works", "enhance", "update the logic". Use sextant:add-feature instead when the thing being built does not yet exist. Use sextant:fix-bug instead when the existing behavior is broken and needs to be restored.
$npx -y skills add hellotern/sextant --skill modify-featureInstalls into the current project.
Run `npx skills use "https://github.com/hellotern/sextant" --skill "hellotern/sextant/modify-feature"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/hellotern/sextant" that are relevant to the current task. Run `npx skills add "https://github.com/hellotern/sextant"` and select the relevant skills, then follow their instructions.