From 33a0b57d72ec13d4d76d451895ef29ff5c400df7 Mon Sep 17 00:00:00 2001
From: Claude <developers@lethean.io>
Date: Tue, 24 Feb 2026 16:14:08 +0000
Subject: [PATCH] chore: use range-over-integer (Go 1.22+)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 chain/difficulty.go   | 2 +-
 consensus/pow.go      | 2 +-
 p2p/handshake.go      | 2 +-
 p2p/relay.go          | 2 +-
 tui/explorer_model.go | 2 +-
 types/address.go      | 4 ++--
 wallet/mnemonic.go    | 2 +-
 wire/decoder.go       | 2 +-
 8 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/chain/difficulty.go b/chain/difficulty.go
index 2f4dac9..2862346 100644
--- a/chain/difficulty.go
+++ b/chain/difficulty.go
@@ -48,7 +48,7 @@ func (c *Chain) NextDifficulty(height uint64, forks []config.HardFork) (uint64,
 	timestamps := make([]uint64, count)
 	cumulDiffs := make([]*big.Int, count)
 
-	for i := 0; i < count; i++ {
+	for i := range count {
 		meta, err := c.getBlockMeta(startHeight + uint64(i))
 		if err != nil {
 			// Fewer blocks than expected — use what we have.
diff --git a/consensus/pow.go b/consensus/pow.go
index 76053f6..16586fd 100644
--- a/consensus/pow.go
+++ b/consensus/pow.go
@@ -27,7 +27,7 @@ func CheckDifficulty(hash types.Hash, difficulty uint64) bool {
 	// Convert hash to big.Int (little-endian as per CryptoNote convention).
 	// Reverse to big-endian for big.Int.
 	var be [32]byte
-	for i := 0; i < 32; i++ {
+	for i := range 32 {
 		be[i] = hash[31-i]
 	}
 	hashInt := new(big.Int).SetBytes(be[:])
diff --git a/p2p/handshake.go b/p2p/handshake.go
index c0737ff..a6f29cc 100644
--- a/p2p/handshake.go
+++ b/p2p/handshake.go
@@ -79,7 +79,7 @@ type PeerlistEntry struct {
 func DecodePeerlist(blob []byte) []PeerlistEntry {
 	n := len(blob) / PeerlistEntrySize
 	entries := make([]PeerlistEntry, n)
-	for i := 0; i < n; i++ {
+	for i := range n {
 		off := i * PeerlistEntrySize
 		entries[i] = PeerlistEntry{
 			IP:       binary.LittleEndian.Uint32(blob[off : off+4]),
diff --git a/p2p/relay.go b/p2p/relay.go
index ed436ca..b184fde 100644
--- a/p2p/relay.go
+++ b/p2p/relay.go
@@ -252,7 +252,7 @@ func (r *ResponseChainEntry) Decode(data []byte) error {
 func splitHashes(blob []byte, size int) [][]byte {
 	n := len(blob) / size
 	out := make([][]byte, n)
-	for i := 0; i < n; i++ {
+	for i := range n {
 		out[i] = blob[i*size : (i+1)*size]
 	}
 	return out
diff --git a/tui/explorer_model.go b/tui/explorer_model.go
index 5914fd8..fab64e7 100644
--- a/tui/explorer_model.go
+++ b/tui/explorer_model.go
@@ -362,7 +362,7 @@ func (m *ExplorerModel) loadBlocks() {
 	}
 
 	rows := make([]blockRow, count)
-	for i := 0; i < count; i++ {
+	for i := range count {
 		h := height - 1 - uint64(i)
 		blk, meta, err := m.chain.GetBlockByHeight(h)
 		if err != nil {
diff --git a/types/address.go b/types/address.go
index cfe878a..d9a2f25 100644
--- a/types/address.go
+++ b/types/address.go
@@ -170,7 +170,7 @@ func base58Encode(data []byte) string {
 	fullBlocks := len(data) / 8
 	lastBlockSize := len(data) % 8
 
-	for i := 0; i < fullBlocks; i++ {
+	for i := range fullBlocks {
 		block := data[i*8 : (i+1)*8]
 		encoded := encodeBlock(block, 11)
 		result = append(result, encoded...)
@@ -227,7 +227,7 @@ func base58Decode(s string) ([]byte, error) {
 
 	var result []byte
 
-	for i := 0; i < fullBlocks; i++ {
+	for i := range fullBlocks {
 		blockStr := s[i*11 : (i+1)*11]
 		decoded, err := decodeBlock(blockStr, 8)
 		if err != nil {
diff --git a/wallet/mnemonic.go b/wallet/mnemonic.go
index 91856c0..2bc1fff 100644
--- a/wallet/mnemonic.go
+++ b/wallet/mnemonic.go
@@ -49,7 +49,7 @@ func MnemonicDecode(phrase string) ([32]byte, error) {
 
 	n := uint32(numWords)
 
-	for i := 0; i < 8; i++ {
+	for i := range 8 {
 		w1, ok1 := wordIndex[words[i*3]]
 		w2, ok2 := wordIndex[words[i*3+1]]
 		w3, ok3 := wordIndex[words[i*3+2]]
diff --git a/wire/decoder.go b/wire/decoder.go
index d9c824b..94b5987 100644
--- a/wire/decoder.go
+++ b/wire/decoder.go
@@ -55,7 +55,7 @@ func (d *Decoder) ReadVarint() uint64 {
 	}
 	var val uint64
 	var shift uint
-	for i := 0; i < MaxVarintLen; i++ {
+	for range MaxVarintLen {
 		_, d.err = io.ReadFull(d.r, d.buf[:1])
 		if d.err != nil {
 			return 0