tokenzip v0.2 — JPEG era

Baseline JPEG encode+decode, zero dependency, cross-validated both directions against Windows GDI+ (see verify-jpeg.ps1). Real reproducible benchmarks (bench.mjs) + README chart generated with the project's own PNG encoder. FORMULAS.md pins every provider formula to its doc source with an update procedure. npm package now @asynx6/tokenzip (scoped, since plain tokenzip is taken). 34 tests.