test: translate Hill 1 bootstrap acceptance criteria into failing tests #310
Description
Summary
Turn the Hill 1 semantic bootstrap acceptance criteria into executable failing tests before further implementation proceeds.
Scope
- derive acceptance tests from docs/design/h1-semantic-bootstrap.md
- cover golden paths, edge cases, and failure cases
- use the canonical repo fixture substrate where repository-shaped behavior matters
- identify any fuzz or stress cases worth adding early
Why
ADR-0006 now makes tests the executable form of design acceptance criteria. Hill 1 needs that contract before implementation expands.