Function usage_from_estimates_with_context 

pub fn usage_from_estimates_with_context(
    session_id: &str,
    command: &str,
    path: Option<String>,
    query: Option<String>,
    estimated_without_projectatlas: usize,
    estimated_with_projectatlas: usize,
    token_savings_bucket: &str,
    baseline_kind: &str,
    confidence: &str,
) -> UsageEvent

Create a usage event from token estimates and explicit baseline semantics.