Slice 3: Chat History Review (Polish)

## Overview Add chat transcript review capability for ended sessions. Operators and admins can review past chat conversations. ## Verification (How to test after deployment) 1. View any ended session with chat messages 2. See "Chat History" collapsible section below timeline 3. Expand to see full conversation 4. Messages show participant name, content, and timestamp 5. (Optional) Click export to download transcript ## Implementation Scope ### 1. Session Detail Component Update Add new collapsible card section: ```haml .card.bg-base-200.mt-2 .card-body %button.card-title.cursor-pointer{ data-action: "click->ui-animate#toggle" } История чата %span.badge.badge-sm= @session.support_session_messages.count .chat-history{ data-ui-animate-target: "content" } - if @session.support_session_messages.any? - @session.support_session_messages.chronological.each do |msg| .chat{ class: msg.operator? ? 'chat-end' : 'chat-start' } .chat-header = msg.participant_name %time.text-xs.opacity-50= l(msg.created_at, format: :short) .chat-bubble{ class: msg.operator? ? 'chat-bubble-primary' : '' } = msg.content - else .text-center.text-base-content.opacity-50.py-4 Нет сообщений в этой сессии ``` ### 2. (Optional) Export Functionality Add transcript export: - Plain text format - JSON format option - Download via button ```ruby def export_chat @session = SupportSession.find(params[:id]) authorize! @session, to: :show?, with: RemoteSupportPolicy messages = @session.support_session_messages.chronological respond_to do |format| format.text { render plain: format_as_text(messages) } format.json { render json: messages.map(&:to_broadcast_payload) } end end ``` ## Files to Modify - `app/components/remote_support/session_detail_component.rb` (add messages helper) - `app/components/remote_support/session_detail_component.html.haml` (add section) - `app/controllers/remote_support_sessions_controller.rb` (optional export) - `config/routes.rb` (optional export route) - `spec/components/remote_support/session_detail_component_spec.rb`