Searches recent public X posts, wrapping the read-only X API v2 recent-search route. Takes a query, excludes retweets by default, offers an optional language filter, expands author profile data, and returns public post text, timestamps, metrics, and author username/profile fields. Requires X_BEARER_TOKEN; no posting, replying, liking, following, or account mutation. Use it as an X search API, Twitter search API, recent tweet search, public posts search, or social search.