Retrieve leads for a workspace with optional list, search, and pagination filters
GET/api/leadslistId (string, optional) – restrict to a specific Tuco list.search (string, optional) – case‑insensitive search on name, email, phone, or company.page (number, optional, default 1) – page number.limit (number, optional, default 50) – page size.401) or invalid query parameters (400) are returned with clear JSON messages.