Rename design r2, "Selector scopes and parser matrix". case2-persona-import.mjs takes --org
through selectorScope and case2-precheck.sh through scripts/selector.sh, one scope each. Both
keep their exit codes and their old business-id wording; a repeated or conflicting selector
says why. persona-import now checks the id while parsing, so stage refuses an invalid
selector before it reads anything.
The case2-install fake stack copy carries packages/business/src/selector.mjs, which the real
copy already does (COPY_PATHS takes packages/business/src).