Search questions across a Stack Exchange site. Returns ranked questions with title, score, answer count, accepted status, tags, and excerpt — no bodies at this stage. Results supply question_id values for stackexchange_get_thread, which fetches the full question body and all answers. Use the `site` parameter to target a specific community (e.g. "stackoverflow", "superuser", "unix"); call stackexchange_list_sites to discover valid site values.
Connector