DL-188
The @compass reserved alias is FROZEN as the system-sender mechanism for ANY system-level message sender (not just the root-manager Setup thread), requiring reserved-handle validation at account creation; case-1 root-manager boot (a Compass-authored initial Setup thread in the manager’s home channel) uses it and is scoped OUT to follow-up RIG-1820, which owes only the sender representation + Setup flow; ratified in shape here so the interim can never revive a prompt field
Status: Active (Matt, 2026-08-10)