Add host temperature telemetry and history

tests/unit/ui-host-overview.test.ts

@@ -9,6 +9,7 @@ import {
     stableHostOrder
 } from '../../src/lib/ui/host-overview.js';
 import HostList from '../../src/lib/ui/components/HostList.svelte';
+import HostTemperatures from '../../src/lib/ui/components/HostTemperatures.svelte';
 
 const now = Date.parse('2026-10-06T12:00:00Z');
 function host(id = 'ec-1', changes: Partial<Host> = {}): Host {
@@ -43,6 +44,40 @@ function host(id = 'ec-1', changes: Partial<Host> = {}): Host {
     };
 }
 
+it('shows CPU temperature with stale status and keeps sensor details expandable', () => {
+    const target = host('ec-2', {
+        connected: false,
+        inventory: {
+            cpuUsagePercent: 25,
+            temperatures: [
+                {
+                    id: 'cpu',
+                    kind: 'cpu-package',
+                    device: 'coretemp',
+                    label: 'Package id 0',
+                    celsius: 65
+                }
+            ]
+        }
+    });
+    const list = render(HostList, {
+        props: {
+            hosts: [{ ...target, serverCount: 0, playerCount: 0, unreportedInstances: 0 }],
+            now
+        }
+    }).body;
+    expect(list).toContain('CPU temp: 65 °C');
+    expect(list).toContain('Resource readings stale');
+    const detail = render(HostTemperatures, { props: { host: target } }).body;
+    expect(detail).toContain('(last reported)');
+    expect(detail).toContain('Temperature sensors');
+    expect(detail).toContain('CPU package 0');
+    expect(detail).not.toMatch(/<details[^>]*open/);
+    const missing = render(HostTemperatures, { props: { host: host() } }).body;
+    expect(missing).toContain('Unavailable');
+    expect(missing).not.toContain('0 °C');
+});
+
 it('does not show an old Ready state as available when the heartbeat becomes stale', () => {
     expect(hostListStatus(host(), now).label).toBe('Ready');
     expect(hostReadingsStale(host(), now + 90_001)).toBe(true);