axon-frontend 1.2.0

AXON compiler frontend — lexer, parser, AST, epistemic type system, type checker, IR generator. Zero runtime dependencies. v1.2.0 adds PRIMITIVE_REGISTRY — closed catalogue of every named language construct (45 entries) with PrimitiveInfo / DocStatus / CoverageSummary types + find / by_category / with_status / coverage_summary helpers. Single source of truth for downstream tooling (axon-emcp coverage gate, future LSP completions, docs-site generators). v1.1.0 introduced session-types + multiparty projection. v1.0.x earlier cycles — see https://github.com/Bemarking/axon-lang.