Make dashboard alerts short with click-to-expand full details

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app/public/dashboard.html

@@ -166,6 +166,16 @@ a { color: var(--cool); text-decoration: none; }
 .alert-card.sev-unknown { background: var(--paper-dark); border-color: var(--border); }
 .alert-title { font-weight: 700; margin-bottom: 0.15rem; }
 .alert-meta  { font-size: 0.75rem; color: var(--ink-light); }
+.alert-card summary { cursor: pointer; list-style: none; }
+.alert-card summary::-webkit-details-marker { display: none; }
+.alert-summary { margin-top: 0.2rem; line-height: 1.35; }
+.alert-hint { font-size: 0.72rem; color: var(--ink-light); margin-top: 0.2rem; }
+.alert-card details[open] .alert-hint { display: none; }
+.alert-full { margin-top: 0.5rem; white-space: pre-wrap; line-height: 1.45; font-size: 0.82rem; }
+.alert-full h4 { margin: 0.6rem 0 0.15rem; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-light); }
+.ah-row { cursor: pointer; }
+.ah-row .ah-body { display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
+.ah-row.open .ah-body { display: block; white-space: pre-wrap; }
 /* Trend arrows */
 .stat-trend { font-size: 0.85rem; margin-left: 0.25rem; }
 .trend-up { color: #e07848; }
@@ -1326,6 +1336,7 @@ function updateTodayBar(readings) {
 }
 
 // ── NWS Alerts ────────────────────────────────────────────────────────────────
+const esc = s => String(s ?? '').replace(/[&<>"']/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));
 const SEV_CLASS = { Extreme: 'sev-extreme', Severe: 'sev-severe', Moderate: 'sev-moderate', Minor: 'sev-minor' };
 async function loadAlerts() {
   const section = document.getElementById('alertsSection');
@@ -1347,10 +1358,19 @@ async function loadAlerts() {
       const sev = p.severity || 'unknown';
       const cls = SEV_CLASS[sev] || 'sev-unknown';
       const ends = p.ends ? new Date(p.ends).toLocaleString([], { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' }) : '';
-      return `<div class="alert-card ${cls}">
-        <div class="alert-title">${p.event || 'Alert'}</div>
-        <div class="alert-meta">${p.areaDesc || ''}${ends ? ' · until ' + ends : ''}</div>
-      </div>`;
+      const desc = (p.description || '').trim();
+      const firstSentence = (p.headline && !desc) ? p.headline : (desc.replace(/\s+/g, ' ').match(/^.*?[.!?](\s|$)/) || [desc.replace(/\s+/g, ' ')])[0].trim();
+      const short = firstSentence.length > 140 ? firstSentence.slice(0, 137) + '…' : firstSentence;
+      const instr = (p.instruction || '').trim();
+      return `<div class="alert-card ${cls}"><details>
+        <summary>
+          <div class="alert-title">${esc(p.event || 'Alert')}</div>
+          <div class="alert-meta">${esc(p.areaDesc || '')}${ends ? ' · until ' + ends : ''}</div>
+          ${short ? `<div class="alert-summary">${esc(short)}</div>` : ''}
+          <div class="alert-hint">Click for full details ▾</div>
+        </summary>
+        <div class="alert-full">${esc(desc || p.headline || 'No further details.')}${instr ? `<h4>What to do</h4>${esc(instr)}` : ''}</div>
+      </details></div>`;
     }).join('');
   } catch {}
 }
@@ -1410,16 +1430,26 @@ async function loadAlertHistory(days) {
               const badge = `<span class="ah-badge ${isNws ? 'nws' : 'threshold'}">${isNws ? 'NWS' : 'Threshold'}</span>`;
               const label = isNws ? (it.event || 'Alert') : (TAG_LABELS[it.tag] || it.tag || '—');
               const detail = isNws ? (it.headline || '') : (it.body || '');
+              const full = isNws ? [it.headline, it.description, it.instruction && ('What to do: ' + it.instruction)].filter(Boolean).join('\n\n') : detail;
               const time = new Date(it.ts).toLocaleString([], { month: 'short', day: 'numeric', hour: '2-digit', minute: '2-digit' });
-              return `<tr>
+              return `<tr class="ah-row" data-full="${esc(full)}" title="Click to expand">
                 <td style="white-space:nowrap;color:var(--ink-light);font-size:0.78rem">${time}</td>
                 <td>${badge}</td>
                 <td style="font-weight:600">${label}</td>
-                <td><div class="ah-body">${detail}</div></td>
+                <td><div class="ah-body">${esc(detail)}</div></td>
               </tr>`;
             }).join('')}</tbody>
           </table></div>`
       }`;
+    body.querySelectorAll('.ah-row').forEach(row => {
+      row.addEventListener('click', () => {
+        const el = row.querySelector('.ah-body');
+        const open = row.classList.toggle('open');
+        el.textContent = open ? row.dataset.full : el.dataset.short;
+      });
+      const el = row.querySelector('.ah-body');
+      el.dataset.short = el.textContent;
+    });
     body.querySelectorAll('[data-ahdays]').forEach(btn => {
       btn.addEventListener('click', () => loadAlertHistory(parseInt(btn.dataset.ahdays)));
     });

app/server.js

@@ -827,7 +827,7 @@ async function alertWatcherCron() {
       if (alertId && !loggedAlertIds.has(alertId)) {
         loggedAlertIds.add(alertId);
         const p = a.properties || {};
-        recordAlertLog({ type: 'nws', alertId, event: p.event, headline: p.headline, effective: p.effective, expires: p.expires, lat: dashLat, lon: dashLon });
+        recordAlertLog({ type: 'nws', alertId, event: p.event, headline: p.headline, description: p.description, instruction: p.instruction, effective: p.effective, expires: p.expires, lat: dashLat, lon: dashLon });
       }
     }
   }
@@ -853,7 +853,7 @@ async function alertWatcherCron() {
           const alertId = a.id || p.id;
           if (alertId && !loggedAlertIds.has(alertId)) {
             loggedAlertIds.add(alertId);
-            recordAlertLog({ type: 'nws', alertId, event: p.event, headline: p.headline, effective: p.effective, expires: p.expires, lat: sub.lat, lon: sub.lon });
+            recordAlertLog({ type: 'nws', alertId, event: p.event, headline: p.headline, description: p.description, instruction: p.instruction, effective: p.effective, expires: p.expires, lat: sub.lat, lon: sub.lon });
           }
         }
         sub.seenAlertIds = [...new Set([...sub.seenAlertIds, ...newAlerts.map(f => f.id || f.properties?.id)])].slice(-200);