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/router/middlewares.go

@@ -63,7 +63,7 @@ func loggerMiddleware() gin.HandlerFunc {
 
 func logRequest(ctx context.Context, c *gin.Context, path string, start, end time.Time, latency time.Duration) {
 	format := "[LoggerMiddleware] %s %s\nStartTime: %s\nEndTime: %s\nLatency: %d\nClientIP: %s\nResponse: %d %d"
-	args := []interface{}{
+	args := []any{
 		c.Request.Method,
 		path,
 		start.Format(time.RFC3339),
@@ -89,8 +89,8 @@ func isOriginAllowed(ctx context.Context, origin string) bool {
 	if err != nil || sc.Value == "" {
 		return false
 	}
-	allowedOrigins := strings.Split(sc.Value, ",")
-	for _, allowed := range allowedOrigins {
+	allowedOrigins := strings.SplitSeq(sc.Value, ",")
+	for allowed := range allowedOrigins {
 		allowed = strings.TrimRight(strings.TrimSpace(allowed), "/")
 		if allowed != "" && strings.EqualFold(allowed, origin) {
 			return true