feat: unify recovery, updates, and schedules under Maintenance

src/lib/server/maintenance/index.ts

@@ -0,0 +1,13 @@
+import { maintenancePolicies } from './policies.js';
+import { watchdogOverview, watchdogTick } from './recovery.js';
+import { maintenanceTick, plutoniumStatus } from './runtime.js';
+import type { MaintenanceOverview } from '../../maintenance.js';
+
+export function maintenanceOverview(): MaintenanceOverview {
+    return { policies: maintenancePolicies(), recovery: watchdogOverview(), runtime: plutoniumStatus() };
+}
+export async function runMaintenance(): Promise<void> {
+    // One failing observer must not prevent the other capabilities from reconciling.
+    const results = await Promise.allSettled([maintenanceTick(), watchdogTick()]);
+    for (const result of results) if (result.status === 'rejected') console.error('[maintenance]', result.reason);
+}