The body is lean—rules, a decision-gate table, numbered steps, and a one-line reference pointer—with no padding or explanations of concepts Claude already knows, so every token earns its place.

Guidance names concrete functions and commands (t.TempDir(), teatest.NewTestModel(), testing.Short(), -update), and the executable code lives in the verified references/examples.md; per the instruction-skills note, absent inline code is not penalized when guidance is actionable.

The six numbered Execution Steps are clearly sequenced, and step 6 ('run with -update, inspect diff, then rerun without -update') provides an explicit validation feedback loop for the risky golden-update operation.

The body is a concise overview pointing to one verified one-level-deep reference, references/examples.md, with a clear annotation of its contents and no nested reference chains.

The only action verb is 'Apply focused Go testing patterns', a single generic action; the 'Trigger:' list names domains (Go tests, coverage, teatest, golden files) but no concrete actions, matching 'names domain and some actions, but not comprehensive' rather than the multiple-specific-actions anchor.

'Apply focused Go testing patterns' states what it does and 'Trigger: Go tests, go test coverage, Bubbletea teatest, golden files' gives explicit when-guidance, so both what and when are answered with an explicit trigger clause.

'Go tests, go test coverage, Bubbletea teatest, golden files' are natural terms a user would say when needing this skill, giving good coverage of common variations.

The Go-testing niche with distinct triggers like 'Bubbletea teatest' and 'golden files' is unlikely to fire for unrelated skills.