AXON compiler frontend - lexer, parser, AST, epistemic type system, type checker, IR generator. Zero runtime dependencies. Ships the two judgments the runtime shares verbatim: `stability` (the `mandate` gain band D < |Kp+Ki+Kd| < 1/L, both endpoints exclusive, verified at compile time against declared bounds) and `substrate` (the `fabric` provider/region/jurisdiction catalog behind axon-E041 region mismatch and axon-E042 compliance-jurisdiction). It also accepts the step-body statement positions the language reference has always published: mandate/shield/ots/lambda applications scoped to the step they govern, the PIX verbs with a braceless field list, and `hibernate until <event>`. axon-T957 RegulatedBoundaryCoverage and axon-T1215 channel κ-coverage guard every regulated boundary. See https://www.ricardovelit.com/axon-docs