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/pages/logics.go

@@ -513,7 +513,7 @@ func pruneProjectDeploymentHistory(ctx context.Context, projectID uint, keepCoun
 	// Two passes: first pass after upload, second pass heals a concurrent race
 	// that inserted another deployment between our list and delete.
 	var lastErr error
-	for pass := 0; pass < 2; pass++ {
+	for range 2 {
 		deleted, err := pruneProjectDeploymentHistoryOnce(ctx, projectID, keepCount, preserveCandidateID)
 		if err != nil {
 			lastErr = err