wastedassign 7→0：删除 7 处死初始化（snapshot.go 三连、push 三件套 content、format.go numStr），改 var 声明，零行为变化。

Result: {"status":"keep","total_issues":38,"golint_canonicalheader":0,"golint_errname":1,"golint_errorlint":12,"golint_forcetypeassert":3,"golint_gosec":0,"golint_intrange":3,"golint_modernize":5,"golint_nilnil":3,"golint_perfsprint":0,"golint_prealloc":3,"golint_recvcheck":7,"golint_usestdlibvars":0,"golint_wastedassign":0,"golint_total":37,"eslint_problems":1,"eslint_errors":0,"eslint_warnings":1,"tsc_errors":0,"measure_s":47}

.auto/log.jsonl

@@ -3,3 +3,4 @@
 {"run":2,"commit":"f1f6bb8","metric":106,"metrics":{"golint_canonicalheader":8,"golint_errname":1,"golint_errorlint":12,"golint_forcetypeassert":3,"golint_gosec":0,"golint_intrange":3,"golint_modernize":37,"golint_nilnil":3,"golint_perfsprint":18,"golint_prealloc":3,"golint_recvcheck":7,"golint_usestdlibvars":3,"golint_wastedassign":7,"golint_total":105,"eslint_problems":1,"eslint_errors":0,"eslint_warnings":1,"tsc_errors":0,"measure_s":38},"status":"keep","description":"修复 internal/apps/edge/observability/linux.go 的 2 个 gosec G115 整数溢出转换：helper 改为接收 int64 b，用 gosec 认可的饱和乘法模式（uint64 域乘积 + 上界比较），去掉原 //nolint:gosec，语义不变（Bsize 恒为正）。repo 自带 gate 首次全绿。","timestamp":1786872064145,"segment":0,"confidence":null,"asi":{"hypothesis":"修复 gosec G115：multiplyUint64ToInt64 改为 accept int64 b 并采用 gosec 认可的饱和乘法模式","insight":"gosec G115 不接受分支上界证明（a > MaxInt64/b），但接受先算 uint64 乘积再 if v > MaxInt64 饱和的模式，无需 nolint","next_action_hint":"下一步批量清理 modernize(37)/perfsprint(18) 等自动可修复类别，用 golangci-lint --fix 后人工核对 diff"}}
 {"run":3,"commit":"b76f707","metric":74,"metrics":{"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},"status":"keep","description":"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。","timestamp":1786872502383,"segment":0,"confidence":17,"asi":{"hypothesis":"批量应用 modernize 自动修复（interface{}→any、max/min、slices.Sort/Contains、strings.Cut/SplitSeq、maps.Copy、strings.Builder）","insight":"golangci-lint --fix 会把 omitempty→omitzero 的冲突修复跳过（2个文件保留原 tag，wire 格式不变，好）；但 fixer 会遗留未使用的 sort import，需手动清 4 处；mail.go 的 Builder 迁移附带暴露 2 个 QF1012，顺手用 fmt.Fprintf 修复。全部修复语义等价，已逐项核对 diff","next_action_hint":"剩余 modernize=5 应为 omitzero 冲突文件；下轮先处理 perfsprint(18)：先看 --fix 是否安全再决定"}}
 {"run":4,"commit":"699e95f","metric":56,"metrics":{"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":0,"golint_prealloc":3,"golint_recvcheck":7,"golint_usestdlibvars":3,"golint_wastedassign":7,"golint_total":55,"eslint_problems":1,"eslint_errors":0,"eslint_warnings":1,"tsc_errors":0,"measure_s":47},"status":"keep","description":"perfsprint 18→0：strconv.Itoa/FormatInt/FormatUint/FormatBool 替代 fmt.Sprintf、无动词 fmt.Errorf→errors.New、纯字符串拼接。全部语义等价（已核对 diff）。修正 fixer 遗留的 import 问题（引入 goimports 统一整理）。","timestamp":1786872884713,"segment":0,"confidence":3.0588235294117645,"asi":{"hypothesis":"perfsprint --fix：%d→strconv.Itoa/FormatInt、%t→FormatBool、%s+const→拼接、无动词 Errorf→errors.New","insight":"重要：golangci-lint v2 fixer 的 import 管理不可靠（删除/添加 import 会出错，53 个文件中 5 处报 undefined）+ 遗留未用 import。已安装 goimports（repo make format 本来就需要它），对改动文件统一 goimports -w 修复。后续只要用 --fix 就要记得跑 goimports -w","next_action_hint":"剩余大头：errorlint(12)、canonicalheader(8)（usestdlibvars 同类）、recvcheck(7)、wastedassign(7)。errorlint 需手工逐处判断；先做 canonicalheader+usestdlibvars（自动可修复但要核对）"}}
+{"run":5,"commit":"d0414b4","metric":45,"metrics":{"golint_canonicalheader":0,"golint_errname":1,"golint_errorlint":12,"golint_forcetypeassert":3,"golint_gosec":0,"golint_intrange":3,"golint_modernize":5,"golint_nilnil":3,"golint_perfsprint":0,"golint_prealloc":3,"golint_recvcheck":7,"golint_usestdlibvars":0,"golint_wastedassign":7,"golint_total":44,"eslint_problems":1,"eslint_errors":0,"eslint_warnings":1,"tsc_errors":0,"measure_s":38},"status":"keep","description":"canonicalheader 8→0 + usestdlibvars 3→0：header key 改为 Go 规范大小写（wire 格式本就如此，纯代码修正）、HTTP 方法常量替代字符串字面量。","timestamp":1786873098921,"segment":0,"confidence":2.1724137931034484,"asi":{"hypothesis":"canonicalheader+usestdlibvars --fix：Header key 统一规范大小写、GET/OPTIONS 等方法常量","insight":"GitHub header 修正前后的 wire 格式完全一致（Go 在 Set 时本来就会规范化），纯代码层面修正，零行为风险；下次遇到同类 100% 安全","next_action_hint":"剩余：errorlint(12) 需逐处人工判断（其中 3 处 err != context.Canceled、2 处 %v wrap、若干 ==/类型断言）；recvcheck(7) 是模型接收者一致性；wastedassign(7) 删 TODO 赋值；intrange(3)/modernize(5)/nilnil(3)/prealloc(3)/forcetypeassert(3)/errname(1)/eslint(1)"}}

internal/apps/openflare/config_version/snapshot.go

@@ -200,9 +200,7 @@ func buildCurrentConfigBundle(ctx context.Context, requireRoutes bool) (*configB
 		return nil, err
 	}
 
-	mainConfig := ""
-	routeConfig := ""
-	checksum := ""
+	var mainConfig, routeConfig, checksum string
 	supportFiles := []SupportFile(nil)
 
 	rendered, renderErr := renderSnapshotConfig(string(snapshotJSON), certificateFiles)

pkg/push/email.go

@@ -41,7 +41,7 @@ func (p *EmailPusher) Send(ctx context.Context, cfg Config, target string, body
 		title = t
 	}
 
-	content := ""
+	var content string
 	if c, ok := body["content"].(string); ok && c != "" {
 		content = c
 	} else {

pkg/push/lark.go

@@ -160,7 +160,7 @@ func (p *LarkPusher) Send(ctx context.Context, cfg Config, _ string, body map[st
 			title = t
 		}
 
-		content := ""
+		var content string
 		if c, ok := body["content"].(string); ok && c != "" {
 			content = c
 		} else {

pkg/push/telegram.go

@@ -60,7 +60,7 @@ func (p *TelegramPusher) Send(ctx context.Context, cfg Config, target string, bo
 	if t, ok := body["title"].(string); ok && t != "" {
 		title = t
 	}
-	content := ""
+	var content string
 	if c, ok := body["content"].(string); ok && c != "" {
 		content = c
 	} else {

pkg/util/format.go

@@ -22,7 +22,7 @@ const (
 
 // Bytes2Size converts a byte count to a human-readable string with unit (B, KB, MB, GB).
 func Bytes2Size(num int64) string {
-	numStr := ""
+	var numStr string
 	unit := "B"
 	switch {
 	case num/int64(sizeGB) >= 1: