fix(webapp): sparkline totals keep their threshold colors in System themes

The mono treatment assumes an icon carries the state; sparkline totals have
none, so uncoloring them erased the p95 and throttled warnings entirely.

Author: kathiekiwi

apps/webapp/app/components/primitives/UsageSparkline.tsx

@@ -106,8 +106,10 @@ export function UsageSparkline({
           </BarChart>
         </ResponsiveContainer>
       </div>
+      {/* No system-mono-label on the total: its color is often the only signal
+          (threshold breaches), there is no icon to carry it */}
       {hideTotal ? null : (
-        <span className={cn("-mt-1 text-xs tabular-nums system-mono-label", totalClassName)}>
+        <span className={cn("-mt-1 text-xs tabular-nums", totalClassName)}>
           {formatTotal ? formatTotal(total) : total.toLocaleString()}
         </span>
       )}

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.queues/route.tsx

@@ -1360,7 +1360,7 @@ const QUEUE_HEADER_TILES: QueueHeaderTile[] = [
         points,
         total: worst,
         formatTotal: (v) => (v > 0 ? formatWaitMs(v) : "–"),
-        totalClassName: worst >= 60_000 ? "system-mono-label text-warning" : undefined,
+        totalClassName: worst >= 60_000 ? "text-warning" : undefined,
       };
     },
   },
@@ -1387,7 +1387,7 @@ const QUEUE_HEADER_TILES: QueueHeaderTile[] = [
         points,
         total: pct,
         formatTotal: (v) => `${v}% of current period`,
-        totalClassName: pct > 0 ? "system-mono-label text-warning" : undefined,
+        totalClassName: pct > 0 ? "text-warning" : undefined,
       };
     },
   },