profile name change

services/tenantProfile.go

@@ -37,6 +37,15 @@ var editableTenantFields = map[string]bool{
 	"primaryemail":   true,
 	"primarycontact": true,
 	"companyname":    true,
+	// The person who administers the shop — the Store admin.
+	//
+	// `tenants.firstname` — there is no lastname column, so this is the whole
+	// name. It was collected nowhere and writable nowhere, which is why every
+	// merchant read so far comes back with it empty and the store profile shows
+	// "—" for Store admin. It describes the business's own contact person, in
+	// the same way `companyname` does, and belongs to the merchant rather than
+	// to the platform.
+	"firstname": true,
 
 	// Where it is.
 	"address":   true,