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/cache/ram/manager.go

@@ -6,6 +6,7 @@ package ram
 import (
 	"context"
 	"errors"
+	"maps"
 	"sync"
 	"time"
 )
@@ -119,9 +120,7 @@ func Set(item CacheItem) {
 	currentMap, ok := managerCache.GetIfPresent(item.Type)
 	newMap := make(map[string]cacheEntry)
 	if ok {
-		for k, v := range currentMap {
-			newMap[k] = v
-		}
+		maps.Copy(newMap, currentMap)
 	}
 
 	var expireAt time.Time