Function is_noise_param 

pub fn is_noise_param(key: &str) -> bool

Parameter keys that are infrastructure/plumbing noise, omitted from the human-facing summary. Session plumbing (session_id, chars, wait deadlines) is not noise: exec_session_param_detail folds it into one identity row instead. Search strings (query) are content, never plumbing: they hide only when the headline consumed them.