module-split

Splits an oversized module into two to six child modules. Analyses the module's docs section by section, proposes the children with a section-to-child table per doc and what stays in the parent, and stops for confirmation. Then freezes each split doc as a legacy copy, creates the children with create, moves the sections word for word, rewrites the parent as an index, routes the code and validates with lint. Use when lint reports a module doc over its size budget, or the user says "split this module", "too big", "break X into submodules".