From 6324e5f3ca3edf3f43f624a4fba08dfd003c1825 Mon Sep 17 00:00:00 2001
From: Claude <developers@lethean.io>
Date: Tue, 24 Feb 2026 16:19:31 +0000
Subject: [PATCH] chore: use slices.Contains for linear search

Replace manual loop-and-break index search with slices.IndexFunc.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 wallet/builder.go | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/wallet/builder.go b/wallet/builder.go
index ef05301..52532a7 100644
--- a/wallet/builder.go
+++ b/wallet/builder.go
@@ -164,13 +164,9 @@ func (b *V1Builder) buildInput(src *Transfer) (types.TxInputToKey, inputMeta, er
 	})
 
 	// Find real index after sorting.
-	realIdx := -1
-	for j, m := range ring {
-		if m.GlobalIndex == src.GlobalIndex {
-			realIdx = j
-			break
-		}
-	}
+	realIdx := slices.IndexFunc(ring, func(m RingMember) bool {
+		return m.GlobalIndex == src.GlobalIndex
+	})
 	if realIdx < 0 {
 		return types.TxInputToKey{}, inputMeta{}, errors.New("real output not found in ring")
 	}