Add queue expansion to internal/mail/router.go following the expandList() pattern:
- Add ErrUnknownQueue error for unknown queue names
- Add expandQueue() method to look up QueueConfig from messaging.json
- Add TestExpandQueue and TestExpandQueueNoTownRoot tests
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add queue address detection following the same pattern as list address
detection. Includes tests in router_test.go.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Implements @group address resolution for mail routing:
- @rig/<rigname>: All agents in a rig
- @town: All town-level agents (mayor, deacon)
- @witnesses, @dogs, @refineries: Role-based groups
- @crew/<rig>, @polecats/<rig>: Role+rig scoped groups
- @overseer: Human operator (uses overseer.json)
Resolution uses `bd list --type=agent` queries with
description filtering. Fan-out at send time creates
individual messages for each resolved recipient.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Implement static mailing list expansion for the mail system:
- Add list:name address syntax (e.g., list:oncall)
- Load lists from ~/gt/config/messaging.json
- Fan-out delivery: each list member gets their own message copy
- Clear error handling for unknown list names
- Add tests for list detection, parsing, and expansion
- Update gt mail send help text with list:name documentation
- Show recipients in output when sending to a list
Example:
gt mail send list:oncall -s "Alert" -m "System down"
# Expands to: mayor/, gastown/witness
# Creates 2 message copies
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
