Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/services/captain/llm/embedding_service.rb

@@ -0,0 +1,38 @@
+class Captain::Llm::EmbeddingService
+  include Integrations::LlmInstrumentation
+
+  class EmbeddingsError < StandardError; end
+
+  def initialize(account_id: nil)
+    Llm::Config.initialize!
+    @account_id = account_id
+    @embedding_model = InstallationConfig.find_by(name: 'CAPTAIN_EMBEDDING_MODEL')&.value.presence || LlmConstants::DEFAULT_EMBEDDING_MODEL
+  end
+
+  def self.embedding_model
+    InstallationConfig.find_by(name: 'CAPTAIN_EMBEDDING_MODEL')&.value.presence || LlmConstants::DEFAULT_EMBEDDING_MODEL
+  end
+
+  def get_embedding(content, model: @embedding_model)
+    return [] if content.blank?
+
+    instrument_embedding_call(instrumentation_params(content, model)) do
+      RubyLLM.embed(content, model: model).vectors
+    end
+  rescue RubyLLM::Error => e
+    Rails.logger.error "Embedding API Error: #{e.message}"
+    raise EmbeddingsError, "Failed to create an embedding: #{e.message}"
+  end
+
+  private
+
+  def instrumentation_params(content, model)
+    {
+      span_name: 'llm.captain.embedding',
+      model: model,
+      input: content,
+      feature_name: 'embedding',
+      account_id: @account_id
+    }
+  end
+end