update viewers page

server.cjs

@@ -797,10 +797,10 @@ function viewerDashboard() {
   const activityLocationRows = db.prepare(`
     select
       date(occurred_at) as date,
-      country,
-      city,
-      region,
-      timezone,
+      coalesce(nullif(country, ''), '') as country,
+      coalesce(nullif(city, ''), '') as city,
+      coalesce(nullif(region, ''), '') as region,
+      coalesce(nullif(timezone, ''), '') as timezone,
       count(distinct visitor_id) as visitors
     from viewer_events
     where occurred_at >= ?
@@ -810,7 +810,7 @@ function viewerDashboard() {
         or region != ''
         or (timezone != '' and timezone != 'Not shared')
       )
-    group by date(occurred_at), country, city, region, timezone
+    group by date(occurred_at), coalesce(nullif(country, ''), ''), coalesce(nullif(city, ''), ''), coalesce(nullif(region, ''), ''), coalesce(nullif(timezone, ''), '')
     order by date asc, visitors desc
   `).all(thirtyDaysSince)
 
@@ -821,7 +821,7 @@ function viewerDashboard() {
       .join(', ')
     if (!label) continue
     const current = locationsByDate.get(row.date) || []
-    if (current.length < 4) current.push({ label, visitors: row.visitors || 0 })
+    current.push({ label, visitors: row.visitors || 0 })
     locationsByDate.set(row.date, current)
   }