fix(ui): normalise status panel timing bars against slowest task not totalMs

Tasks run in parallel so any individual task time can exceed the wall-clock
total, causing all bars to render at 100%. Normalise against the maximum
individual task time so bars correctly show relative response times.

public/app.js

@@ -704,8 +704,9 @@ function renderStatusPanel(data, panel) {
       <div class="status-card status-card-wide">
         <div class="status-card-title">Last Poll (${lp.totalMs}ms total, ${pollAge}s ago)</div>
         <div class="status-timings">`;
+    const maxTaskMs = lp.tasks.reduce((max, t) => Math.max(max, t.ms), 1);
     for (const t of lp.tasks) {
-      const barWidth = lp.totalMs > 0 ? Math.max(2, (t.ms / lp.totalMs) * 100) : 0;
+      const barWidth = Math.max(2, (t.ms / maxTaskMs) * 100);
       html += `
           <div class="timing-row">
             <span class="timing-label">${escapeHtml(t.label)}</span>