During February 2026, Astavie enhanced the facet-rs/facet repository by implementing Enum Tag Discriminant with Numeric Support, enabling integer tag values in enum serialization and deserialization when combining the tag attribute with is_numeric. This work focused on Rust, leveraging serialization and deserialization techniques to introduce new semantics for tagged enums, particularly improving macro-based tagging for internally and adjacently tagged variants with predictable discriminant values. Astavie validated the feature with end-to-end examples using facet_json, ensuring round-trip consistency and clear documentation. The update addressed interoperability with JSON-based protocols and improved developer experience, reflecting a focused and well-tested engineering contribution.