[am-porter]

Summary

• Omit inference.inference_config from relational NIM HTTP requests while retaining run_mode and use_prediction_time.
• Reject explicitly requested inference config fields instead of silently dropping them. Keep regression statistic selection in output.prediction_statistic.
• Update request tests and regenerate the wire payload snapshot.

Verification

• Client and cross-package suite: 2,599 passed, 163 skipped.
• Relational engine suite: 2,171 passed, 106 skipped.
• Ruff, mypy, repository hygiene, attribution, and wire snapshot checks passed.

[adi-kumo]

should this supersede #16?

[am-porter]

oh seems like your PR is more thought out for compatibility forwards and backwards, and future use of the options? I just wanted to unblock myself running some examples but I'll close this