Show recorded figures for closed campaigns, not the wiped counter

My own sweep created this. Deactivating an ad ZEROES `remaining` on the
network, and for banners — where that column counts UP — zero reads as
"served nothing". So every campaign the sweep closed flipped to 0 served /
2,500 left, despite the ledger correctly recording served=2500,
completed=true.

Closed campaigns now read from what we recorded at the time rather than
re-deriving from a counter that no longer holds anything. Live campaigns
still compute from the network, per placement type.

Also removed the em-dash placeholder that blanked LEFT for stopped rows —
there is a real number to show — and made stop()'s error path assume fully
served rather than fully unserved, since guessing high would refund
impressions that had actually been delivered.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

public/suite-traffic.js

@@ -187,7 +187,14 @@
       var bought = Number(c.bought != null ? c.bought : c.impressions) || 0;
       var rawRem = l.remaining != null ? Number(l.remaining) : null;
       var servedShown, left;
-      if (rawRem == null) { servedShown = Number(served) || 0; left = null; }
+      if (c.completed || c.stopped) {
+        // Once a campaign is closed, trust what we recorded at the time.
+        // Deactivating an ad ZEROES `remaining` on the network — and for a
+        // banner, where that column counts UP, zero reads as "served nothing".
+        // Re-deriving here would wipe a finished campaign back to 0 served.
+        servedShown = Number(c.served != null ? c.served : bought) || 0;
+        left = Math.max(0, bought - servedShown);
+      } else if (rawRem == null) { servedShown = Number(served) || 0; left = null; }
       else if (c.kind === 'text') { left = Math.max(0, Math.min(rawRem, bought)); servedShown = bought - left; }
       else { servedShown = Math.max(0, Math.min(rawRem, bought)); left = bought - servedShown; }
       // "running" with 0 left reads as broken. It is not: banners have no cap on
@@ -211,8 +218,8 @@
       tr.innerHTML = '<td>' + label + '</td>' +
         '<td>' + (c.target.indexOf('/p/') !== -1 ? 'personal page' : 'invite page') + '</td>' +
         '<td>' + Number(c.bought != null ? c.bought : c.impressions).toLocaleString() + '</td>' +
-        '<td><b>' + Number(c.stopped ? (c.served || 0) : servedShown).toLocaleString() + '</b></td>' +
+        '<td><b>' + Number(servedShown).toLocaleString() + '</b></td>' +
-        '<td>' + (c.stopped ? '—' : (left != null ? left.toLocaleString() : '—')) + '</td>' +
+        '<td>' + (left != null ? left.toLocaleString() : '—') + '</td>' +
         '<td>' + (l.hits != null ? l.hits : '—') + '</td>' +
         '<td>' + statusCell + '</td>';
       var act = document.createElement('td');

suite-traffic.js

@@ -238,7 +238,11 @@ async function stop(memberId, adId) {
       served = r.served;
       unserved = r.left;
     }
-  } catch (e) { /* if stats are unavailable, refund nothing rather than guess */ }
+  } catch (e) {
+    // Stats unavailable: refund nothing rather than guess. Guessing high would
+    // hand back impressions that were actually delivered.
+    served = boughtGuess; unserved = 0;
+  }
 
   await callNas({ action: 'deactivate', ad_id: Number(adId) });