Initial commit: Add logistics and order_detail message types

- Add Logistics component with progress tracking
- Add OrderDetail component for order information
- Support data-driven steps and actions
- Add blue color scale to widget SCSS
- Fix node overflow and progress bar rendering issues
- Add English translations for dashboard components

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

enterprise/app/services/captain/llm/assistant_chat_service.rb

@@ -0,0 +1,48 @@
+class Captain::Llm::AssistantChatService < Llm::BaseAiService
+  include Captain::ChatHelper
+
+  def initialize(assistant: nil, conversation_id: nil)
+    super()
+
+    @assistant = assistant
+    @conversation_id = conversation_id
+
+    @messages = [system_message]
+    @response = ''
+    @tools = build_tools
+  end
+
+  # additional_message: A single message (String) from the user that should be appended to the chat.
+  #                    It can be an empty String or nil when you only want to supply historical messages.
+  # message_history:   An Array of already formatted messages that provide the previous context.
+  # role:              The role for the additional_message (defaults to `user`).
+  #
+  # NOTE: Parameters are provided as keyword arguments to improve clarity and avoid relying on
+  # positional ordering.
+  def generate_response(additional_message: nil, message_history: [], role: 'user')
+    @messages += message_history
+    @messages << { role: role, content: additional_message } if additional_message.present?
+    request_chat_completion
+  end
+
+  private
+
+  def build_tools
+    [Captain::Tools::SearchDocumentationService.new(@assistant, user: nil)]
+  end
+
+  def system_message
+    {
+      role: 'system',
+      content: Captain::Llm::SystemPromptsService.assistant_response_generator(@assistant.name, @assistant.config['product_name'], @assistant.config)
+    }
+  end
+
+  def persist_message(message, message_type = 'assistant')
+    # No need to implement
+  end
+
+  def feature_name
+    'assistant'
+  end
+end