Find every optimal electional rule-relaxation combination by exact omission budget

Evaluates caller-selected predicates once on a fixed 15, 30, or 60 minute UTC grid of at most seven days, then exhaustively projects every criterion subset. For each exact omission count it returns every tied combination maximizing observed matching samples, with exact sample witnesses. This is transparent sampled-set arithmetic, not astrological quality scoring, continuous-time proof, weighting, recommendation, interpretation, prediction, probability, or statistical confidence. No licensed catalog, new dependency, or request-time network source is used. One standard quota unit per admitted request; failed or timed-out admitted attempts are not refunded. Do not automatically retry. Historical mode uses an explicit BCE/CE date object and UT1 conventions. Its response is the versioned historical envelope, not the modern UTC envelope. Read result for calculation fields and metadata for limits and uncertainty.