Function scheduled_time_from_ctx 

pub fn scheduled_time_from_ctx(
    query_ctx: &QueryContextRef,
) -> Option<DateTime<Utc>>

Best-effort helper: extract scheduled time from a [QueryContextRef] as a DateTime<Utc>.

Errors are silently swallowed, returning None; use parse_scheduled_time_datetime at call sites that need to reject malformed scheduled time.