Fix native provisioning scheduling and progress reporting

src/lib/server/pipeline/activity.ts

@@ -0,0 +1,16 @@
+import type { WorkerActivity } from '../../provisioning-detail.js';
+
+const active = new Map<string, WorkerActivity>();
+let sequence = 0;
+
+/** Live diagnostics only. Durable operation milestones belong in provisioning history. */
+export function workerActivity(): WorkerActivity[] {
+    return [...active.values()].map(value => ({ ...value }));
+}
+
+export async function trackActivity<T>(key: string, label: string, work: () => Promise<T>): Promise<T> {
+    if (active.has(key)) key = `${key}:${++sequence}`;
+    active.set(key, { key, label, startedAt: new Date().toISOString() });
+    try { return await work(); }
+    finally { active.delete(key); }
+}