async fn remove_helper(
state: &AppState,
connection: &str,
block: &str,
) -> Result<(), String>Expand description
Remove AgentMux’s helper from SSH host connection (Remotes, §4.9 of
SPEC_REMOTES_PANE_2026_10_05.md), once the user confirms in the window of
pane block, naming the sessions that will end.