feat: make Cases tab rows clickable in KPI dashboard

renderCasesTable rows now have onclick="openCaseDetail(cid)" and
cursor:pointer. Clicking any case row navigates to /case?cid=<id>
(the standard IRIS case detail page). Also exposes openCaseDetail
on window for the inline onclick handler.

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

iris-web/ui/src/pages/kpi_dashboard.js

@@ -266,14 +266,15 @@ function renderCasesTable(cases) {
     return;
   }
   body.innerHTML = cases.map(c => {
+    const cid = c.case_id ?? '';
     const owner = (c.owner || {}).user_name || '—';
     const stateName = (c.state || {}).state_name || '—';
     const closed = c.close_date ? fmtDate(c.close_date) : '—';
-    return `<tr>
+    return `<tr style="cursor:pointer" onclick="openCaseDetail(${cid})">
       <td></td>
       <td>${statusDot({status_name: stateName})}</td>
       <td>${owner}</td>
-      <td>${c.case_id ?? ''}</td>
+      <td>${cid}</td>
       <td>${c.case_name || '—'}</td>
       <td>${c.case_soc_id || '—'}</td>
       <td>—</td>
@@ -292,6 +293,11 @@ function openAlertDetail(alertId, event) {
   window.location.href = `/alerts?alert_ids=${alertId}&cid=1`;
 }
 
+function openCaseDetail(caseId) {
+  if (!caseId) return;
+  window.location.href = `/case?cid=${caseId}`;
+}
+
 function refreshActive() {
   activeTab === 'alerts' ? loadAlerts() : loadCases();
 }
@@ -312,3 +318,4 @@ window.nextPage = nextPage;
 window.sortBy = sortBy;
 window.switchTab = switchTab;
 window.openAlertDetail = openAlertDetail;
+window.openCaseDetail = openCaseDetail;