Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/models/enterprise/inbox_agent_availability.rb

@@ -0,0 +1,31 @@
+module Enterprise::InboxAgentAvailability
+  extend ActiveSupport::Concern
+
+  def member_ids_with_assignment_capacity
+    return member_ids unless capacity_filtering_enabled?
+
+    # Get online agents with capacity
+    agents = available_agents
+    agents = filter_by_capacity(agents)
+    agents.map(&:user_id)
+  end
+
+  private
+
+  def filter_by_capacity(inbox_members_scope)
+    return inbox_members_scope unless capacity_filtering_enabled?
+
+    inbox_members_scope.select do |inbox_member|
+      capacity_service.agent_has_capacity?(inbox_member.user, self)
+    end
+  end
+
+  def capacity_filtering_enabled?
+    account.feature_enabled?('assignment_v2') &&
+      account.account_users.joins(:agent_capacity_policy).exists?
+  end
+
+  def capacity_service
+    @capacity_service ||= Enterprise::AutoAssignment::CapacityService.new
+  end
+end