Compact live visitor panel

server.js

@@ -625,6 +625,7 @@ function updateVisitorContext(conversationId, body) {
 function currentVisitors() {
   const rows = db.prepare(`
     SELECT vs.*, s.site_key,
+      (SELECT c.public_id FROM conversations c WHERE c.site_id = vs.site_id AND c.visitor_token = vs.visitor_token ORDER BY datetime(c.last_message_at) DESC, c.id DESC LIMIT 1) AS last_conversation_id,
       (SELECT COUNT(*) FROM conversations c WHERE c.site_id = vs.site_id AND c.visitor_token = vs.visitor_token) AS visitor_conversation_count
     FROM visitor_sessions vs
     JOIN sites s ON s.id = vs.site_id
@@ -650,6 +651,7 @@ function formatVisitorSession(row) {
     pageCount: new Set(history.map((item) => item.url).filter(Boolean)).size,
     visitCount: Math.max(1, history.length),
     conversationCount: row.visitor_conversation_count || 0,
+    lastConversationId: row.last_conversation_id,
     device,
     language: row.language,
     timezone: row.timezone,