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ECHO — fewer than three finishers suppresses the rating update

Scoring system: ECHO    α (blend factor): 0.25
Per the IS guide sample SI 12: "Handicaps shall not be adjusted after a race
in which two or less boats finish." Four boats race; only two finish (the
others DNF). Engine must not advance any handicap; every boat's new_H equals
its starting handicap. Aggregates report `updateSuppressed: true`.

Race results (corrected times, ranks, points) still compute normally — the
gate is on the handicap update only, not on race scoring.

Race 1

Gun time: 12:00:00   α: 0.25   Finishers: 2   ΣHS: 2.020   Σ(1/TE): 0.00053419   Rating update suppressed (fewer than 3 finishers)
RankNameSail # Finish timeTE1/TE Starting HCTPIadjNew H Points
1 Alpha 1 13:00:00 60m 00s 0.00027778 1.0000 60m 00s 1.0504 +0.0000 1.0000 1
2 Bravo 2 13:05:00 65m 00s 0.00025641 1.0200 66m 18s 0.9696 +0.0000 1.0200 2
Charlie 3 DNF 1.0500 1.0500 5
Delta 4 DNF 0.9800 0.9800 5

Series standings

RankNameSail #R1TotalNet
1 Alpha 1 1 1 1
2 Bravo 2 2 2 2
3 Charlie 3 DNF 5 5
3 Delta 4 DNF 5 5