refac: DELETE /v1/user/{id}?expected_role_id=N, user.remove audit event, 409 target_role_not_found, GetAll returns its error, Own-scope visibility filter moved into repos, JSON tags removed from use-case types

internal/domain/audit/auditDomain.go

@@ -105,6 +105,7 @@ const (
 	ActionUserUpdateProfile     = "user.update_profile"
 	ActionUserChangeRole        = "user.change_role"
 	ActionUserTransferOwnership = "user.transfer_ownership"
+	ActionUserRemove            = "user.remove"
 	ActionInviteCreate          = "invite.create"
 	ActionInviteCancel          = "invite.cancel"
 	ActionInviteRenew           = "invite.renew"
@@ -135,6 +136,7 @@ const (
 	ParamRemoved            = "removed"
 	ParamFrom               = "from"
 	ParamTo                 = "to"
+	ParamToName             = "to_name"
 	ParamMaxGBFrom          = "max_gb_from"
 	ParamMaxGBTo            = "max_gb_to"
 	ParamMerged             = "merged"