expire method
Extends the TTL for a task status entry.
Implementation
@override
/// Extends the TTL for a task status entry.
Future<void> expire(String taskId, Duration ttl) async {
final entry = _entries[taskId];
if (entry == null) return;
entry.expiresAt = stemNow().add(ttl);
_scheduleExpiry(taskId, ttl);
}