Integrate test code improvements using web_template components

lt-alert:
- Replace custom .stale-banner with lt-alert lt-alert--warning in app.js
  and links.html; remove stale-banner CSS, reuse lt-alert margin rule

lt-progress:
- Replace custom .traffic-bar-track/.traffic-bar-fill in links.html with
  lt-progress from base.css; TX uses default (orange), RX uses --cyan,
  both flip to --red when utilisation >85% (trafficBarClass helper)
- Keep traffic layout classes (.traffic-section/.traffic-row etc.) for structure

Suppression type badges:
- Map target_type to distinct badge colors: host→badge-warning (orange),
  interface→badge-info (cyan), unifi_device→badge-purple (new alias using
  --accent-purple from base.css), all→badge-critical (red)
- Applied in both server-rendered table (Jinja2 dict lookup) and
  renderActiveRows() JS

Topology animated down-wire:
- Add data-host attribute to .topo-v2-wire-10g/.topo-v2-wire-1g elements
- updateTopology() toggles .wire-down class on the 10G drop-wire when
  host.status === 'down'
- .wire-down CSS: animated repeating-linear-gradient dashed red line
  via wire-dash-anim @keyframes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

templates/links.html

@@ -38,6 +38,11 @@ function fmtRateBar(bytesPerSec, linkSpeedMbps) {
   return Math.min(100, (mbps / linkSpeedMbps) * 100);
 }
 
+function trafficBarClass(pct, isTx) {
+  if (pct > 85) return 'lt-progress--red';
+  return isTx ? '' : 'lt-progress--cyan';
+}
+
 function fmtSpeed(mbps) {
   if (mbps === null || mbps === undefined) return '–';
   if (mbps >= 1000) return (mbps/1000).toFixed(0) + ' Gbps';
@@ -226,12 +231,12 @@ function renderIfaceCard(ifaceName, d) {
       <div class="traffic-section">
         <div class="traffic-row">
           <span class="traffic-label">TX</span>
-          <div class="traffic-bar-track"><div class="traffic-bar-fill traffic-tx" style="width:${txPct}%"></div></div>
+          <div class="lt-progress ${trafficBarClass(txPct, true)}"><div class="lt-progress-bar" style="width:${txPct}%"></div></div>
           <span class="traffic-value">${fmtRate(d.tx_bytes_rate)}</span>
         </div>
         <div class="traffic-row">
           <span class="traffic-label">RX</span>
-          <div class="traffic-bar-track"><div class="traffic-bar-fill traffic-rx" style="width:${rxPct}%"></div></div>
+          <div class="lt-progress ${trafficBarClass(rxPct, false)}"><div class="lt-progress-bar" style="width:${rxPct}%"></div></div>
           <span class="traffic-value">${fmtRate(d.rx_bytes_rate)}</span>
         </div>
       </div>
@@ -289,12 +294,12 @@ function renderPortCard(portName, d) {
       <div class="traffic-section">
         <div class="traffic-row">
           <span class="traffic-label">TX</span>
-          <div class="traffic-bar-track"><div class="traffic-bar-fill traffic-tx" style="width:${txPct}%"></div></div>
+          <div class="lt-progress ${trafficBarClass(txPct, true)}"><div class="lt-progress-bar" style="width:${txPct}%"></div></div>
           <span class="traffic-value">${fmtRate(d.tx_bytes_rate)}</span>
         </div>
         <div class="traffic-row">
           <span class="traffic-label">RX</span>
-          <div class="traffic-bar-track"><div class="traffic-bar-fill traffic-rx" style="width:${rxPct}%"></div></div>
+          <div class="lt-progress ${trafficBarClass(rxPct, false)}"><div class="lt-progress-bar" style="width:${rxPct}%"></div></div>
           <span class="traffic-value">${fmtRate(d.rx_bytes_rate)}</span>
         </div>
       </div>
@@ -477,10 +482,12 @@ function checkLinksStale(updatedStr) {
     if (!banner) {
       banner = document.createElement('div');
       banner.id = 'links-stale-banner';
-      banner.className = 'stale-banner';
+      banner.className = 'lt-alert lt-alert--warning';
+      banner.innerHTML = '<span class="lt-alert-icon">⚠</span><div class="lt-alert-body"><div class="lt-alert-msg"></div></div>';
       document.getElementById('links-container').prepend(banner);
     }
-    banner.textContent = `⚠ Link data may be stale — last updated ${Math.floor(age/60)}m ago.`;
+    banner.querySelector('.lt-alert-msg').textContent =
+      `Link data may be stale — last updated ${Math.floor(age/60)}m ago.`;
     banner.style.display = '';
   } else if (banner) {
     banner.style.display = 'none';