Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/services/contacts/bulk_action_service.rb

@@ -0,0 +1,44 @@
+class Contacts::BulkActionService
+  def initialize(account:, user:, params:)
+    @account = account
+    @user = user
+    @params = params.deep_symbolize_keys
+  end
+
+  def perform
+    return delete_contacts if delete_requested?
+    return assign_labels if labels_to_add.any?
+
+    Rails.logger.warn("Unknown contact bulk operation payload: #{@params.keys}")
+    { success: false, error: 'unknown_operation' }
+  end
+
+  private
+
+  def assign_labels
+    Contacts::BulkAssignLabelsService.new(
+      account: @account,
+      contact_ids: ids,
+      labels: labels_to_add
+    ).perform
+  end
+
+  def delete_contacts
+    Contacts::BulkDeleteService.new(
+      account: @account,
+      contact_ids: ids
+    ).perform
+  end
+
+  def ids
+    Array(@params[:ids]).compact
+  end
+
+  def labels_to_add
+    @labels_to_add ||= Array(@params.dig(:labels, :add)).reject(&:blank?)
+  end
+
+  def delete_requested?
+    @params[:action_name] == 'delete'
+  end
+end