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}

pkg/logger/logger.go

@@ -78,25 +78,25 @@ func Init(cfg Config) {
 }
 
 // DebugF 输出 Debug 级别日志
-func DebugF(ctx context.Context, format string, args ...interface{}) {
+func DebugF(ctx context.Context, format string, args ...any) {
 	msg := fmt.Sprintf(format, args...)
 	logger.Ctx(ctx).Debug(msg, getTraceIDFields(ctx)...)
 }
 
 // InfoF 输出 Info 级别日志
-func InfoF(ctx context.Context, format string, args ...interface{}) {
+func InfoF(ctx context.Context, format string, args ...any) {
 	msg := fmt.Sprintf(format, args...)
 	logger.Ctx(ctx).Info(msg, getTraceIDFields(ctx)...)
 }
 
 // WarnF 输出 Warn 级别日志
-func WarnF(ctx context.Context, format string, args ...interface{}) {
+func WarnF(ctx context.Context, format string, args ...any) {
 	msg := fmt.Sprintf(format, args...)
 	logger.Ctx(ctx).Warn(msg, getTraceIDFields(ctx)...)
 }
 
 // ErrorF 输出 Error 级别日志
-func ErrorF(ctx context.Context, format string, args ...interface{}) {
+func ErrorF(ctx context.Context, format string, args ...any) {
 	msg := fmt.Sprintf(format, args...)
 	logger.Ctx(ctx).Error(msg, getTraceIDFields(ctx)...)
 }

pkg/logger/ringbuffer.go

@@ -141,10 +141,7 @@ func (r *LogRingBuffer) Query(cursor int, limit int) ([]LogEntry, bool) {
 	}
 
 	// 返回 cut 之前的最后 limit 条
-	start := cut - limit
-	if start < 0 {
-		start = 0
-	}
+	start := max(cut-limit, 0)
 
 	hasMore := start > 0
 	return ordered[start:cut], hasMore