axon-frontend 0.19.0

AXON compiler frontend — lexer, parser, AST, epistemic type system, type checker, IR generator. Zero runtime dependencies. v0.19.0 adds the Declared & Compile-Time-Typed Store Schema — an `axonstore` may declare its columns inline, by manifest reference, or per-tenant via env-var; `axon check` proves every `where:`, `persist`, `mutate`, `purge` against declared columns with 6 error codes (T801–T805 + T807) plus Levenshtein-suggested names + type-compatible alternatives (Fase 38). v0.18.0 adds the Request Binding Contract totality check — an axonendpoint's `execute:` flow parameters must be covered by its `body:` type at compile time (Fase 37). v0.17.0 adds `in_memory` to the axonstore backend catalog (Fase 36.x). v0.12.0 ships the wire-format adapter cycle. v0.11.0 Fase 32 REST routes. v0.10.0 Fase 31 type-driven wire. v0.9.0 Fase 30 HTTP. v0.2.0–v0.8.0 earlier compiler cycles.