mulsense

Everything for working with the xnew library. (1) Coding rules and conventions for writing or modifying xnew code — component functions, the unit lifecycle, DOM nesting/events, custom events, scope/timers, context/find, scene navigation, and sync (multiplayer); read this BEFORE writing or changing any xnew code in src/, examples/, addons/, or tests/. (2) Structure visualization — analyze an xnew program and produce a Markdown + Mermaid map of how its component functions relate. Also update it whenever an xnew mistake is found so the same mistake does not recur.