Add English and Chinese docs for the OnixByte Toolbox monorepo covering
all six modules: common-toolbox, crypto-toolbox, math-toolbox, tuple,
identity-generator, and version-catalogue.
Add English and Chinese docs for the Delta Force Guide full-stack app
(Spring Boot backend + React frontend) with architecture, API reference,
and live site link.
Replace Rspress documentation template with an organization homepage
featuring OnixByte's key projects: Toolbox, Dev Lab, Helix, and Delta
Force Guide. Bilingual content for en-gb and zh-hans.