ally heev

> Summary of changes since early December 2025. Changes are motivated from discussions in this threads or learnings from the Rust request & response object implementations in [apache/iceberg-rust#1907](https://github.com/apache/iceberg-rust/pull/1907): > >...

>Make Actor an Object instead of a string in https://github.com/apache/iceberg/commit/3eeb95e7d0fdc4bc59cdb03804a98eac29d5b562. In most real-world szenarios an Actor will have more than one field, and even if not, the Catalog can simply...