Module binary 

Binary columnar formats via the Polars/Arrow backbone.

This is the only module that knows Polars exists. It reads Parquet and Arrow IPC into a Polars DataFrame and lowers that to the engine-independent ax_core::RecordSet — so detectors, the envelope, and the contract never see a Polars type. Cell values map into the same closed Value set used by the text normalizer, and unsupported logical types (dates, nested, …) are preserved as their string form rather than guessed at.

Functions

read

Reads a binary fmt into columns. Only Format::Parquet and Format::Arrow are handled; anything else is a programming error.