resolveByName() only checked config-based queues/channels, missing
beads-native ones (gt:queue, gt:channel). Added lookup for both.
Also added LookupQueueByName to beads package for parity with
LookupChannelByName.
Fixes: gt-l5qbi3
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>