The tmux session name "gt-deacon-boot" was causing HasSession("gt-deacon")
to return true due to tmux prefix matching behavior. This made the daemon
think the Deacon was running when only Boot was active, and caused commands
targeting "gt-deacon" to be sent to Boot session instead.
The fix renames Boot session from "gt-deacon-boot" to "gt-boot", which
has no prefix overlap with "gt-deacon".
Fixes: gt-sgzsb
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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