AXON compiler frontend — lexer, parser, AST, epistemic type system, type checker, IR generator. Zero runtime dependencies. v0.19.2 closes IDENTITY recognition end-to-end at compile time: inline parser accepts `identity` keyword + `TypeChecker::with_manifest` consults the manifest for forms (b) `manifest_ref` and (c) `env_var` so T801-T805 fire compile-time on those forms too (Fase 38.x.d). v0.19.1 plumbed `identity: bool` through the AST + manifest + introspect (Fase 38.x.c). v0.19.0 the Declared & Compile-Time-Typed Store Schema (Fase 38). v0.18.0 Request Binding Contract totality (Fase 37). v0.17.0 `in_memory` axonstore (Fase 36.x). v0.12.0 wire-format adapter. v0.11.0 Fase 32 REST. v0.10.0 type-driven wire. v0.9.0 HTTP. v0.2.0–v0.8.0 earlier cycles.