pub fn query_session_scatter(
conn: &Connection,
filter: &AnalyticsFilter,
limit: usize,
) -> AnalyticsResult<Vec<SessionScatterPoint>>Expand description
Query per-session (message_count, api_tokens_total) points for Explorer
scatter plots.
Uses conversations + messages as the primary source and prefers
message_metrics API-token columns when available. Falls back to
token_usage.total_tokens, then conversation rollups.