jacob-balslev Invalid Subject (negative fixture)
This fixture is intentionally invalid: subject is not one of the twelve closed
competency shelves. The structural lint gate MUST reject it.
Concept of the skill
What it is: A deliberately broken capability skill used only by the conformance runner. Mental model: Break exactly one rule so the lint error isolates that one rule. Why it exists: To give the "subject must be in the closed enum" rule a failing example. What it is NOT: It is not a production skill and never routes outside the test runner. Adjacent concepts: the other negative fixtures under this directory. One-line analogy: It is a unit test's fixture, not a real skill. Common misconception: That a negative fixture should also be lint-clean — it must not be.
Coverage
Valid v8 frontmatter except an out-of-enum subject.
Philosophy of the skill
One broken field per fixture keeps the failing assertion unambiguous.
Verification
Exercised by the gate-conformance runner; expected to fail structural lint with a subject error.
Do NOT Use When
- Always. This is a test fixture, not a usable skill.