Parser hot path simplification

Date: 2026-04-29 Area: parser

Parser hot paths now avoid repeated cursor-helper and chained Match(...) dispatch in Advance, Check, Match, remaining expression operators, call/member continuations, and primary expressions. Same-corpus production timing with GocciaScriptLoader --output=json showed 35.1-49.1% parser-phase improvements versus clean HEAD, so this supersedes the narrower binary-only parser optimization while keeping recursive descent and avoiding parser unit splits. spikes/parser-hot-dispatch-performance.md.