refactor: make provisioning own instance lifecycle operations

src/routes/api/betas/[id]/test/+server.ts

@@ -1,4 +1,5 @@
 import { json } from '@sveltejs/kit';
+import { releaseRestartRequest } from '$lib/server/provisioning/index.js';
 import { db } from '$lib/server/db/index.js';
 import { getBeta } from '$lib/server/fleet/beta.js';
 import { activity, currentRun, evidence, readMetrics, saveMetrics, setOutcome, storedPlan } from '$lib/server/fleet/beta-tests.js';
@@ -50,6 +51,8 @@ export async function POST({ params, request }: { params: { id: string }; reques
             if (stored.outcome === 'inconclusive') throw new Error('The testing window ended. Roll back and open a new beta with a longer deadline');
             if (db().prepare("SELECT 1 FROM beta_servers WHERE beta_id = ? AND error LIKE 'deploy:%'").get(id)) throw new Error('Deployment was incomplete. Roll back before opening a fresh beta');
             db().transaction(() => {
+                const servers = db().prepare('SELECT server FROM beta_servers WHERE beta_id = ?').all(id) as { server: string }[];
+                for (const { server } of servers) releaseRestartRequest(server, { kind: 'beta', id: String(id) });
                 db().prepare('UPDATE beta_test_runs SET retired_at = ? WHERE beta_id = ? AND retired_at IS NULL').run(new Date().toISOString(), id);
                 db().prepare("UPDATE beta_servers SET stage = 'awaiting-empty', error = NULL, restarted_at = NULL, healthy_at = NULL WHERE beta_id = ? AND deployed_at IS NOT NULL AND error NOT LIKE 'deploy:%'").run(id);
                 // SQL NULL does not satisfy NOT LIKE.