DemandResponsibleMultiSelect (C143), ResponsibleMultiSelect (C90) e
AsyncSearchCombobox trocam o efeito duplicado (requestId/setTimeout 250ms/
loading/failed) pelo hook compartilhado src/hooks/useAsyncSearchOptions.ts,
com isQueryReady opcional preservando a semântica de query vazia de cada
consumidor. Comportamento preservado; unit novo do hook (renderHook +
fake timers); sem schema/server/migration.
