zeromind.uninstallLib

Remove a previously installed cross-world library from this world. A world pinned to an older @builtin is brought to the engine's version with zeromind.update("@builtin"), which also repins the world's files; removing the @builtin pin leaves them naming the old version. It deletes the marker file for the dependency so @<name>::... references no longer resolve, accepting the library name with or without the leading @. The removal is an ordinary dirty change; stage, commit, and push to make it permanent. Returns the marker path that was removed.