Function suppress_inactive_queue_additions 

pub fn suppress_inactive_queue_additions(
    diff: &str,
    current_content: &str,
) -> String

Return a copy of diff with user-added lines inside the current agent:queue component removed.

Inactive queue bodies are document state, not fresh prompt input. Callers use this before extracting prompt targets, slash commands, presets, and imperative directives when queue activation has not resolved true.