perf: DataView reconstruction path + SharedArrayBuffer infra

refactor: eliminate JSON — all binary zero-copy scalar packing

feat: schema-driven zero-copy parallel — auto-generated from TSC 6.0.2

feat: zero-copy parallel parse — FlatNode direct shared memory reads

feat: parallel parse splitting — V8 ValueSerializer via Zig shared memory

perf: parallel work-stealing with Zig caches — faster than Node.js cold

feat: shared type cache infrastructure + parallel V8 with channel

feat: channel-based phase barrier for zero-copy parallel

cleanup: remove Zig parser, bridge, serializer, frozen checker

fix: update Zig parser SyntaxKind values to TypeScript 6.0.2

revert: restore working state — clean slate for zero-copy parallel

feat: lazy SourceFile bridge — nodes materialized on-demand from Zig AST

feat: C++ native SourceFile creator + JS bridge fallback

fix: rewrite V8 bridge with ts.SyntaxKind constants — version-proof

feat: parallel phase barrier + honest benchmark + Zig parser on-demand