fix(growth): harden deterministic report evidence

2026-08-21 00:32:21 +03:30
parent 1d8d4edf92
commit 6c80f71847
11 changed files with 369 additions and 103 deletions
--- a/internal/growth/peer.go
+++ b/internal/growth/peer.go
@@ -47,12 +47,14 @@ func EvaluatePeer(input PeerInput) PeerResult {
 	slices.Sort(values)
 	result.State = PeerReady
 	result.MedianPaidSessions = median(values)
-	var atOrBelow int64
+	var below, equal int64
 	for _, value := range values {
-		if input.MerchantPaidSessions >= value {
-			atOrBelow++
+		if input.MerchantPaidSessions > value {
+			below++
+		} else if input.MerchantPaidSessions == value {
+			equal++
 		}
 	}
-	result.PercentileBPS = atOrBelow * 10_000 / int64(len(values))
+	result.PercentileBPS = (2*below + equal) * 5_000 / int64(len(values))
 	return result
 }