modernize 37→5（-32）：interface{}→any、内置 max/min、slices/maps 辅助、strings.Cut/SplitSeq、strings.Builder（修复 mail.go O(n²) 拼接）。逐 hunk 核对语义等价；omitzero 冲突修复被自动跳过（wire 格式不变）；手动清 4 处遗留 sort import + 2 处 QF1012。

Result: {"status":"keep","total_issues":74,"golint_canonicalheader":8,"golint_errname":1,"golint_errorlint":12,"golint_forcetypeassert":3,"golint_gosec":0,"golint_intrange":3,"golint_modernize":5,"golint_nilnil":3,"golint_perfsprint":18,"golint_prealloc":3,"golint_recvcheck":7,"golint_usestdlibvars":3,"golint_wastedassign":7,"golint_total":73,"eslint_problems":1,"eslint_errors":0,"eslint_warnings":1,"tsc_errors":0,"measure_s":38}

internal/apps/openflare/zone/stats.go

@@ -183,10 +183,7 @@ func emptyStatsSeries(since, until time.Time, bucketMinutes int) []StatsPoint {
 	}
 	// Cap points to keep chart readable.
 	maxPoints := 120
-	capacity := int(end.Sub(start)/bucket) + 1
-	if capacity > maxPoints {
-		capacity = maxPoints
-	}
+	capacity := min(int(end.Sub(start)/bucket)+1, maxPoints)
 	points := make([]StatsPoint, 0, capacity)
 	for cursor := start; !cursor.After(end) && len(points) < maxPoints; cursor = cursor.Add(bucket) {
 		points = append(points, StatsPoint{BucketStartedAt: cursor})