Healthcheck Payload compatibility

The current manifest declares optional peer payload >=3 and depends on current core. The package publishes ESM, CommonJS, and declarations.

It requires a server-side Payload object exposing find. Collection access, database adapter behavior, and query semantics follow the installed Payload application. Repository tests cover the small PayloadLike boundary; no broader Payload-version matrix is claimed here.

The workspace currently resolves Payload 3.68.5 and the active docs gate uses Node 22. The declared support floor is only Payload 3; other Payload 3 versions are permitted by the manifest but are not covered by an active compatibility matrix. Verify the Local API query with the exact Payload and database adapter versions used by your application.