Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/models/captain/assistant_response.rb

@@ -0,0 +1,67 @@
+# == Schema Information
+#
+# Table name: captain_assistant_responses
+#
+#  id                :bigint           not null, primary key
+#  answer            :text             not null
+#  documentable_type :string
+#  embedding         :vector(1536)
+#  question          :string           not null
+#  status            :integer          default("approved"), not null
+#  created_at        :datetime         not null
+#  updated_at        :datetime         not null
+#  account_id        :bigint           not null
+#  assistant_id      :bigint           not null
+#  documentable_id   :bigint
+#
+# Indexes
+#
+#  idx_cap_asst_resp_on_documentable                  (documentable_id,documentable_type)
+#  index_captain_assistant_responses_on_account_id    (account_id)
+#  index_captain_assistant_responses_on_assistant_id  (assistant_id)
+#  index_captain_assistant_responses_on_status        (status)
+#  vector_idx_knowledge_entries_embedding             (embedding) USING ivfflat
+#
+class Captain::AssistantResponse < ApplicationRecord
+  self.table_name = 'captain_assistant_responses'
+
+  belongs_to :assistant, class_name: 'Captain::Assistant'
+  belongs_to :account
+  belongs_to :documentable, polymorphic: true, optional: true
+  has_neighbors :embedding, normalize: true
+
+  validates :question, presence: true
+  validates :answer, presence: true
+
+  before_validation :ensure_account
+  before_validation :ensure_status
+  after_commit :update_response_embedding
+
+  scope :ordered, -> { order(created_at: :desc) }
+  scope :by_account, ->(account_id) { where(account_id: account_id) }
+  scope :by_assistant, ->(assistant_id) { where(assistant_id: assistant_id) }
+  scope :with_document, ->(document_id) { where(document_id: document_id) }
+
+  enum status: { pending: 0, approved: 1 }
+
+  def self.search(query, account_id: nil)
+    embedding = Captain::Llm::EmbeddingService.new(account_id: account_id).get_embedding(query)
+    nearest_neighbors(:embedding, embedding, distance: 'cosine').limit(5)
+  end
+
+  private
+
+  def ensure_status
+    self.status ||= :approved
+  end
+
+  def ensure_account
+    self.account = assistant&.account
+  end
+
+  def update_response_embedding
+    return unless saved_change_to_question? || saved_change_to_answer? || embedding.nil?
+
+    Captain::Llm::UpdateEmbeddingJob.perform_later(self, "#{question}: #{answer}")
+  end
+end