Migrate Callers Then Delete Legacy APIs

Read the host adapter once per session before following this skill. It maps upstream Cursor-specific tool, model, path, and permission instructions to your host and sets authority limits.

• Update tests to assert the new contract, and delete tests that only protect pre-refactor implementation details

When this applies:

• No external users depend on backward compatibility. The support-promise test decides what counts as supported
• The project can absorb coordinated breaking changes
• The new API is part of a simplification or refactor initiative