Check an Excel import

Reads a filled-in copy of the CRM’s own Excel template and returns the row-by-row report of what crm_import_spreadsheet would create from it: deals and activities, NEVER customers or contacts — those live only in Anagrafiche (a list is loaded with anagrafiche_analyse_spreadsheet and anagrafiche_import_spreadsheet, one with anagrafiche_create_party). Every customer a row names must ALREADY be an anagrafica, matched by partita IVA, else by exact name. It creates no deal or activity, but it is not a pure read: on an organisation that has no pipeline yet it seeds the default sales process, because a deal row cannot be checked against stages that do not exist. Show the person the report; when it is committable and they agree, pass the SAME bytes to crm_import_spreadsheet. At most 2 000 rows per sheet and 8 MB decoded. Get the empty template from the CRM’s own Importa screen.