Yep. I replaced that bit with explicit methods and checked signatures against the version we use. The typo now fails. So does a caller sending the wrong argument name. Response handling is next.

Include a failed request containing numeric data. Don't let the parser discover a convenient success value.

Tests now cover the documented success shape, request failure, missing data and a timeout. Failure carrying numeric details no longer populates the status tile. I also made an unexpected shape show unavailable instead of retaining a fresh-looking value. Those tests and the call-contract tests pass.

Useful. Keep the old permissive fake out of the test imports.