fix(agent-bot): use conversation_updated instead of assignee_changed

CONVERSATION_UPDATED already fires when assignee_agent_bot_id changes,
so no modification to AssignmentHandler is needed. Just listen for
conversation_updated in AgentBotListener instead.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/listeners/agent_bot_listener.rb

@@ -15,7 +15,7 @@ class AgentBotListener < BaseListener
     agent_bots_for(inbox, conversation).each { |agent_bot| process_webhook_bot_event(agent_bot, payload) }
   end
 
-  def assignee_changed(event)
+  def conversation_updated(event)
     conversation = extract_conversation_and_account(event)[0]
     return if conversation.assignee_agent_bot.blank?
 

app/models/concerns/assignment_handler.rb

@@ -29,7 +29,7 @@ module AssignmentHandler
 
   def notify_assignment_change
     {
-      ASSIGNEE_CHANGED => -> { saved_change_to_assignee_id? || saved_change_to_assignee_agent_bot_id? },
+      ASSIGNEE_CHANGED => -> { saved_change_to_assignee_id? },
       TEAM_CHANGED => -> { saved_change_to_team_id? }
     }.each do |event, condition|
       condition.call && dispatcher_dispatch(event, previous_changes)

spec/listeners/agent_bot_listener_spec.rb

@@ -57,8 +57,8 @@ describe AgentBotListener do
     end
   end
 
-  describe '#assignee_changed' do
-    let(:event_name) { 'assignee.changed' }
+  describe '#conversation_updated' do
+    let(:event_name) { 'conversation.updated' }
     let!(:event) { Events::Base.new(event_name, Time.zone.now, conversation: conversation) }
 
     context 'when conversation is assigned to an agent bot' do
@@ -68,15 +68,15 @@ describe AgentBotListener do
 
       it 'sends webhook to the assigned agent bot' do
         expect(AgentBots::WebhookJob).to receive(:perform_later).with(agent_bot.outgoing_url,
-                                                                      conversation.webhook_data.merge(event: 'assignee_changed')).once
-        listener.assignee_changed(event)
+                                                                      conversation.webhook_data.merge(event: 'conversation_updated')).once
+        listener.conversation_updated(event)
       end
     end
 
     context 'when conversation is not assigned to an agent bot' do
       it 'does not send webhook' do
         expect(AgentBots::WebhookJob).not_to receive(:perform_later)
-        listener.assignee_changed(event)
+        listener.conversation_updated(event)
       end
     end
   end