feat(tickets): INC | CRQ dataset sub-tabs

Add a sub-tab bar under the Tickets tab (INC | CRQ). A DS dataset variable repoints
the dashboard/search/filter-options calls to /webhook/${DS}-* and updates the overview
/ map / legend labels; switching resets the per-dataset dropdowns + explorer and
reloads. Map, SLA legend, popups and the vehicle overlay are dataset-agnostic, so CRQ
renders "just like INC" off reporting.fn_crq_* (fleettickets migration 16).

NOT pushed yet — pushing staging auto-deploys; holding until the CRQ API + DB land.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/index.html

@@ -99,6 +99,18 @@
   }
   .tab:hover { color: var(--text); }
   .tab.active { background: var(--accent); color: #1a1009; }
+  /* Tickets dataset sub-tabs (INC | CRQ) — same look as the header tabs. */
+  .subtabs {
+    display: inline-flex; gap: 4px; background: var(--bg);
+    border: 1px solid var(--border); border-radius: 8px; padding: 3px; margin-bottom: 10px;
+  }
+  .subtab {
+    background: transparent; color: var(--muted); border: 0; border-radius: 6px;
+    padding: 6px 16px; font-size: 12.5px; font-weight: 700; letter-spacing: .3px;
+    cursor: pointer; white-space: nowrap;
+  }
+  .subtab:hover { color: var(--text); }
+  .subtab.active { background: var(--accent); color: #1a1009; }
 
   /* ── Tabbed views ────────────────────────────────────────────────────── */
   .view { display: none; }
@@ -391,11 +403,15 @@
   </section>
 
   <section class="view" id="view-tickets">
+  <div class="subtabs" id="tk-subtabs" role="tablist">
+    <button class="subtab active" data-ds="inc" type="button">INC</button>
+    <button class="subtab" data-ds="crq" type="button">CRQ</button>
+  </div>
   <main id="tk-main">
     <div class="card span12">
       <div class="tk-overview-row">
         <div class="tk-overview-metrics">
-          <h2>INC overview <span class="count" id="tk-fresh"></span></h2>
+          <h2><span id="tk-ds-ov">INC</span> overview <span class="count" id="tk-fresh"></span></h2>
           <div class="metric-row" id="tk-metrics"><div class="empty">Loading…</div></div>
         </div>
         <div class="tk-filters">
@@ -425,7 +441,7 @@
     </div>
 
     <div class="card span12">
-      <h2>Live INC map <span class="count">open (SLA-coloured) · closed (faded same colour) · ISP vehicles</span></h2>
+      <h2>Live <span id="tk-ds-map">INC</span> map <span class="count">open (SLA-coloured) · closed (faded same colour) · ISP vehicles</span></h2>
       <div class="map-wrap">
         <div id="tk-map"></div>
         <div id="tk-layers" class="map-ctl collapsed">
@@ -894,6 +910,34 @@ function switchTab(name) {
 document.querySelectorAll('.tab').forEach(b =>
   b.addEventListener('click', () => switchTab(b.dataset.tab)));
 
+// ── Tickets dataset sub-tabs (INC | CRQ) ────────────────────────────────────
+// Same dashboard machinery, different source dataset: flips DS, which repoints the
+// /webhook/${DS}-dashboard|search|filter-options calls, then resets the per-dataset
+// dropdowns + explorer and reloads. The map/legend/popups are dataset-agnostic.
+function resetSelect(id) {                       // keep only the first (placeholder) option
+  const el = $(id); if (!el) return;
+  while (el.options.length > 1) el.remove(1);
+  el.selectedIndex = 0;
+}
+function setDataset(ds) {
+  if (ds === DS) return;
+  DS = ds;
+  document.querySelectorAll('.subtab').forEach(b => b.classList.toggle('active', b.dataset.ds === ds));
+  const U = ds.toUpperCase();
+  $('tk-ds-ov').textContent = U;
+  $('tk-ds-map').textContent = U;
+  // per-dataset dropdowns + explorer results are stale → clear and re-init
+  incDropdownsInit = false; incFilterOptionsInit = false;
+  ['tk-cluster', 'tk-status', 'tk-x-eng', 'tk-x-cluster'].forEach(resetSelect);
+  $('tk-x-id').value = ''; $('tk-x-id-list').innerHTML = '';
+  $('tk-x-count').textContent = '';
+  $('tk-x-wrap').innerHTML = '<div class="empty">Search by ticket id, engineer, cluster, state and time.</div>';
+  loadInc();                 // reload metrics + map for the new dataset
+  loadIncFilterOptions();    // refill explorer pulldowns for the new dataset
+}
+document.querySelectorAll('.subtab').forEach(b =>
+  b.addEventListener('click', () => setDataset(b.dataset.ds)));
+
 // ============================================================================
 // TICKETS — INC operations dashboard (open layer + windowed closed overlay)
 // ============================================================================
@@ -963,6 +1007,7 @@ const tkMarkers = new Map();                            // imei → maplibregl.M
 const tkLayerState = { open: true, closed: true, vehicles: true };
 let tkOwnerFilter = null;   // when set, the closed layer is filtered to this engineer (drill-down)
 let incData = null, incDropdownsInit = false, vehCount = 0;
+let DS = 'inc';   // active Tickets dataset (inc | crq) — drives /webhook/${DS}-* endpoints + labels
 let tkLoadedDay = null;   // EAT calendar day of the last INC load — drives the midnight auto-rollover
 const eatDay = () => new Date().toLocaleDateString('en-CA', { timeZone: 'Africa/Nairobi' });
 
@@ -1224,7 +1269,7 @@ let incFilterOptionsInit = false;
 async function loadIncFilterOptions() {
   if (incFilterOptionsInit) return;
   try {
-    const o = await api('/webhook/inc-filter-options');
+    const o = await api(`/webhook/${DS}-filter-options`);
     incFilterOptionsInit = true;
     const eng = $('tk-x-eng'); (o.owners || []).forEach((n) => eng.add(new Option(n, n)));
     const cl = $('tk-x-cluster'); (o.clusters || []).forEach((c) => cl.add(new Option(c, c)));
@@ -1235,7 +1280,7 @@ async function loadIncSearch() {
   const wrap = $('tk-x-wrap');
   wrap.innerHTML = '<div class="empty">Searching…</div>';
   try {
-    const j = await api(`/webhook/inc-search?${incSearchQs()}`);
+    const j = await api(`/webhook/${DS}-search?${incSearchQs()}`);
     tkSearchRows = (j && j.rows) || [];
     const count = (j && j.count) || 0;
     $('tk-x-count').textContent = j ? (j.truncated ? `(first ${tkSearchRows.length} of ${intg(count)})` : `(${intg(count)})`) : '';
@@ -1287,7 +1332,7 @@ function initIncDropdowns(m) {
 async function loadInc() {
   $('tk-main').classList.add('loading');
   try {
-    const j = await api(`/webhook/inc-dashboard?${incQs()}`);
+    const j = await api(`/webhook/${DS}-dashboard?${incQs()}`);
     incData = j;
     tkLoadedDay = eatDay();
     if (!incDropdownsInit && j.metrics) { initIncDropdowns(j.metrics); incDropdownsInit = true; }
@@ -1296,7 +1341,7 @@ async function loadInc() {
     buildIncLayers();
   } catch (e) {
     console.error(e);
-    $('tk-metrics').innerHTML = `<div class="banner error">${e.message || 'Failed to load the INC dashboard. Is the API reachable?'}</div>`;
+    $('tk-metrics').innerHTML = `<div class="banner error">${e.message || `Failed to load the ${DS.toUpperCase()} dashboard. Is the API reachable?`}</div>`;
   } finally {
     $('tk-main').classList.remove('loading');
   }
@@ -1389,8 +1434,8 @@ function showIncPopup(f, closed) {
 function buildIncLayers() {
   const m = (incData && incData.metrics) || {};
   const rows = [
-    { id: 'open',     label: 'Open INC',   color: SLA_COLORS.breached,    n: m.open_now ?? 0 },
-    { id: 'closed',   label: 'Closed INC', color: pastel(CLOSED_COLOR),   n: m.closed_in_window ?? 0 },
+    { id: 'open',     label: `Open ${DS.toUpperCase()}`,   color: SLA_COLORS.breached,    n: m.open_now ?? 0 },
+    { id: 'closed',   label: `Closed ${DS.toUpperCase()}`, color: pastel(CLOSED_COLOR),   n: m.closed_in_window ?? 0 },
     { id: 'vehicles', label: 'ISP vehicles', color: '#E8954A',            n: vehCount },
   ];
   let html = rows.map((r) =>