Fetch a creator's posts, sorted and paginated.
Use this when the user asks to see what a creator has posted (e.g., "show me Jane's
last 20 posts", "what are this creator's top-engagement reels?", "pull recent posts
from creator-id ABC"). Identify the creator by either `creator_id` (UUID) OR
(`platform` + `username`).
`sort` defaults to "recent" (newest first); use "top_engagement" for the highest-
engagement posts, or one of "most_likes" / "most_views" / "most_comments" for a
specific metric. `limit` defaults to 12 and is capped at 50. Pass `cursor` from a
previous response's `next_cursor` to paginate.
Returns post records (caption, media URL, like/comment/view counts, timestamps),
plus `has_more` and `next_cursor` for pagination.
Examples:
- User: "Show @niickjackson's recent Instagram posts" -> use this tool with
platform "instagram" and username "niickjackson".
- User: "Is @niickjackson a fit for Pixel?" -> use this after `get_profile` when
the fit analysis needs recent content evidence, then call `match_creators`.
Connector