feat(display): add compact QUIC and host health views

web/shared/charts/TimeChart.tsx

@@ -160,6 +160,8 @@ export function TimeChart({ t, series, height = 220, unit = '', zero = true, gap
             (u) => {
               const { ctx } = u
               ctx.save()
+              // Coverage gaps are context only; keep the warm mask subtle so spikes stay prominent.
+              ctx.globalAlpha = 0.16
               ctx.fillStyle = shade
               for (const g of latest.current.gaps) {
                 const x0 = Math.max(u.bbox.left, u.valToPos(g.from / 1000, 'x', true))