Use when [the specific situations, symptoms, and phrases someone would actually type when they hit this problem]. Include the error strings and the wrong-conclusion phrasings, not just the correct terminology: people search for "my wifi is slow", not "co-channel contention". Describe ONLY when to use it, never summarize the workflow inside. Keep the whole frontmatter under 1024 characters. End by naming what this skill is NOT for, pointing at the sibling skill that covers it.
