eure-codegen-ir

eure-codegen-ir is the canonical intermediate representation used to bridge:

• Rust derive inputs (eure-macros)
• Eure schema data (eure-codegen / eure-schema)
• Code generation for FromEure, IntoEure, and BuildSchema

This crate focuses on:

• lossless semantic representation
• explicit invariants with typed validation errors
• deterministic structural equality and structural diff

Milestone 1 intentionally excludes serde serialization to avoid freezing a wire format before adapter parity is complete.