Add capacity overview with host resource history

src/lib/server/hosts/capacity-page.ts

@@ -0,0 +1,10 @@
+import { error } from '@sveltejs/kit';
+import { capacityHistoryReport } from '../reports/index.js';
+import { readCapacityCurrent } from './capacity-overview.js';
+import type { CapacityData, CapacityQuery } from '../../capacity.js';
+
+export async function capacityPage(query: CapacityQuery): Promise<CapacityData> {
+    const current = await readCapacityCurrent(query);
+    if (query.hostId && !current.hostOptions.some(host => host.id === query.hostId)) error(404, 'Host not found.');
+    return { query, current, history: await capacityHistoryReport(query) };
+}