The index rule is about the commit's result, so it now runs for every commit that changes an indexed value: a plain record landing on a value a variant of the post-commit set holds is refused naming both keys and the index (the held index is never trusted; a plain write had already overwritten it). Plain-vs-plain is untouched. A variant sheds overrides of slots its type lacks when it is flushed, as a plain record sheds the member, and the load's report names the slot when the schema itself never had it.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>