Resolve LinkedIn targeting entities

Turns plain words into the LinkedIn targeting URNs a campaign actually accepts — job titles, industries, seniorities, company-size bands, locations, skills, interests, member behaviours, employers, degrees, fields of study and interface locales. Use when: before every create or update that touches targeting, without exception. A campaign payload takes URNs and nothing else, and there is no fuzzy match on the write path: an invented URN either errors or targets strangers. Do not guess a URN, reuse one from a demographic report (those are report labels), or copy one between accounts without checking it here first. Do not pass a user's phrase straight into a create tool — that is what this tool exists to prevent. Returns matching entities with their URN and display name — a location's name already carries its parents ("Sacramento, California, United States"). Seniorities, staffCountRanges and interfaceLocales are short fixed lists: when nothing matches the query, the whole list comes back for the user to choose from. interfaceLocales is the language members use LinkedIn in (one locale per language, e.g. urn:li:locale:en_US for all English), never a country. Costs nothing, so run it as many times as the audience needs facets. If a search returns nothing, try a shorter or more common phrasing (LinkedIn matches on its own canonical titles), and if it still fails tell the user that facet cannot be targeted rather than substituting something close.