golden-fixture-openlisted

> This overlay prepend fragment applies exclusively to the **opencode** harness. > It is inserted before the main body during rendering. # Golden Fixture This fixture skill is used by per-target golden tests to assert that rendered skill bundles match each harness contract. It exercises: - Frontmatter rendering with target-specific aliases - Support file copying (scripts directory) - Overlay application (opencode prepend) - Codex metadata generation (agents/openai.yaml)