Relay protocol prompt is injected by the relay daemon for every spawn, not needed for minor tasks

[jahala]

Issue

--append-system-prompt relay protocol prompt is injected by the relay daemon for every spawn.

When spawning agents to run very minor tasks where using the messaging etc isn't vital, injecting the system prompt takes both time and tokens.

Solution

Please add a flag that makes the daemon to skip injecting the default prompt when spawning an agent