Look up Meta targeting ids

Turns a plain-language audience description into the ids Meta's write endpoints require: interest ids, behaviour ids, and location keys for countries, regions, cities, postcodes and media markets. Use when: the user describes an audience in words ("women in Berlin interested in yoga") and before any campaign creation. meta_create_image_campaign only accepts ids, never free text. Do not use to check how an existing audience is performing (meta_get_adset_performance) or to list saved audiences (meta_list_custom_audiences). Returns the id or location key plus the estimated audience size where Meta provides one. Search one concept at a time; broad queries return loosely related suggestions. If several results look plausible, show the user the options with their sizes and let them choose. Do not pick one silently.