Export completed

Mantiks POSTs this JSON body to setting.webhook.url when a search export finishes, and when you trigger a mocked delivery with POST /searches/webhook/test. The request uses Content-Type: application/json. Redirects are not followed. Respond with HTTP 2xx to acknowledge receipt. If the payload is larger than about 75KB and the destination returns HTTP 413, Mantiks retries as several POSTs with the same envelope and a subset of leads; nb_leads and credits_cost then describe that POST only. Optional lead fields (reverse_company, icebreaker fields, CV score fields) appear only when those options are enabled on the search.