chore(per-instance-hook-scoping): archive verified+synced change

Move to openspec/changes/archive/2026-07-09-per-instance-hook-scoping/
(R100 renames preserved). 9 artifacts. Canonical openspec/specs/
service-instance-scoping/ remains. Resolves multi-instance wrong-data bug
(hooks now scope by instance.id; instance switcher re-scopes).
Carry-overs: fetchBackupDashboard untouched (design decision 5); subquery
scoping for runs/alerts (schema asymmetry).

frontend/src/api/backups.ts

@@ -6,7 +6,9 @@ import type {
 	BackupRun,
 } from "../types/backups";
 
-export async function fetchBackupJobs(serviceId?: string): Promise<BackupJob[]> {
+export async function fetchBackupJobs(
+	serviceId?: string,
+): Promise<BackupJob[]> {
 	return get<BackupJob[]>(
 		"/api/backups/jobs",
 		serviceId ? { service_id: serviceId } : undefined,