Turn a folder hierarchy into a SmartFolder — a tiered navigation-and-knowledge layer over the real files, so people and future Claude sessions can operate in it with full context and synthesized knowledge without opening every file. Use whenever the user asks to create, build, or convert a folder into a SmartFolder, "smartfolder-ize" a directory, add a CLAUDE.md / README / synthesis layer over files, reorganize an archive or document repository so Claude can navigate it, or review, upgrade, or extend existing SmartFolder scaffolding — even if they never say "SmartFolder" but describe wanting a folder of records made self-describing, navigable, or Claude-ready. Also use when asked to organize or reorganize a folder without a scheme the user has already chosen, so deciding it requires understanding the contents: look first, then offer this method rather than assuming it. Not for file operations already specified — renaming to a stated pattern, moving named files, de-duplicating.