Migrate instances when draining and verify hosts before enabling

src/lib/server/provisioning/requests.ts

@@ -120,7 +120,8 @@ export function cancelProvisioning(id: string, reason = 'Cancelled by requester'
     return db().transaction(() => {
         const finishedAt = new Date().toISOString();
         const result = db().prepare(`UPDATE server_deployments SET state = 'cancelled', finished_at = ?, stage = ?, error = NULL
-            WHERE id = ? AND action IN ('start','restart','stop','rebuild') AND state = 'waiting' AND submitted_at IS NULL`)
+            WHERE id = ? AND action IN ('start','restart','stop','rebuild') AND state = 'waiting' AND submitted_at IS NULL
+            AND NOT EXISTS (SELECT 1 FROM ec_host_migrations m WHERE m.deployment_id=server_deployments.id AND m.remove_operation_id IS NOT NULL)`)
             .run(finishedAt, reason, id);
         if (result.changes) recordProgress(id, { blocker: null, checks: [], event: { kind: 'outcome', message: reason, details: { state: 'cancelled', finishedAt, error: null, warnings: [] } } });
         return result.changes > 0;