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）。

Result: {"status":"keep","total_issues":56,"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}

pkg/render/openresty/render.go

@@ -14,6 +14,7 @@ import (
 	"path"
 	"regexp"
 	"sort"
+	"strconv"
 	"strings"
 )
 
@@ -168,32 +169,32 @@ func DedupeSupportFiles(files []SupportFile) []SupportFile {
 func renderMainConfigTemplate(templateText string, cfg ConfigSnapshot, limitReqRates []string) string {
 	replacer := strings.NewReplacer(
 		"{{OpenRestyWorkerProcesses}}", cfg.WorkerProcesses,
-		"{{OpenRestyWorkerConnections}}", fmt.Sprintf("%d", cfg.WorkerConnections),
-		"{{OpenRestyWorkerRlimitNofile}}", fmt.Sprintf("%d", cfg.WorkerRlimitNofile),
+		"{{OpenRestyWorkerConnections}}", strconv.Itoa(cfg.WorkerConnections),
+		"{{OpenRestyWorkerRlimitNofile}}", strconv.Itoa(cfg.WorkerRlimitNofile),
 		"{{OpenRestyConnectionUpgradeMap}}", renderConnectionUpgradeMap(),
 		"{{OpenRestyDefaultServerBlock}}", renderDefaultServerBlock(cfg.DefaultServerReturnStatus, cfg.HTTP3Enabled),
 		"{{OpenRestyAccessLogPath}}", AccessLogPlaceholder,
 		"{{OpenRestyErrorLogPath}}", ErrorLogPlaceholder,
 		"{{OpenRestyEventsUseDirective}}", renderTemplateDirective(cfg.EventsUse != "", fmt.Sprintf("use %s;", cfg.EventsUse)),
 		"{{OpenRestyEventsMultiAcceptDirective}}", renderTemplateDirective(cfg.EventsMultiAcceptEnabled, "multi_accept on;"),
-		"{{OpenRestyKeepaliveTimeout}}", fmt.Sprintf("%d", cfg.KeepaliveTimeout),
-		"{{OpenRestyKeepaliveRequests}}", fmt.Sprintf("%d", cfg.KeepaliveRequests),
-		"{{OpenRestyClientHeaderTimeout}}", fmt.Sprintf("%d", cfg.ClientHeaderTimeout),
-		"{{OpenRestyClientBodyTimeout}}", fmt.Sprintf("%d", cfg.ClientBodyTimeout),
+		"{{OpenRestyKeepaliveTimeout}}", strconv.Itoa(cfg.KeepaliveTimeout),
+		"{{OpenRestyKeepaliveRequests}}", strconv.Itoa(cfg.KeepaliveRequests),
+		"{{OpenRestyClientHeaderTimeout}}", strconv.Itoa(cfg.ClientHeaderTimeout),
+		"{{OpenRestyClientBodyTimeout}}", strconv.Itoa(cfg.ClientBodyTimeout),
 		"{{OpenRestyClientMaxBodySize}}", cfg.ClientMaxBodySize,
 		"{{OpenRestyLargeClientHeaderBuffers}}", cfg.LargeClientHeaderBuffers,
-		"{{OpenRestySendTimeout}}", fmt.Sprintf("%d", cfg.SendTimeout),
-		"{{OpenRestyProxyConnectTimeout}}", fmt.Sprintf("%d", cfg.ProxyConnectTimeout),
-		"{{OpenRestyProxySendTimeout}}", fmt.Sprintf("%d", cfg.ProxySendTimeout),
-		"{{OpenRestyProxyReadTimeout}}", fmt.Sprintf("%d", cfg.ProxyReadTimeout),
+		"{{OpenRestySendTimeout}}", strconv.Itoa(cfg.SendTimeout),
+		"{{OpenRestyProxyConnectTimeout}}", strconv.Itoa(cfg.ProxyConnectTimeout),
+		"{{OpenRestyProxySendTimeout}}", strconv.Itoa(cfg.ProxySendTimeout),
+		"{{OpenRestyProxyReadTimeout}}", strconv.Itoa(cfg.ProxyReadTimeout),
 		"{{OpenRestyProxyRequestBuffering}}", onOff(cfg.ProxyRequestBuffering),
 		"{{OpenRestyProxyBuffering}}", onOff(cfg.ProxyBufferingEnabled),
 		"{{OpenRestyProxyBuffers}}", cfg.ProxyBuffers,
 		"{{OpenRestyProxyBufferSize}}", cfg.ProxyBufferSize,
 		"{{OpenRestyProxyBusyBuffersSize}}", cfg.ProxyBusyBuffersSize,
 		"{{OpenRestyGzip}}", onOff(cfg.GzipEnabled),
-		"{{OpenRestyGzipMinLength}}", fmt.Sprintf("%d", cfg.GzipMinLength),
-		"{{OpenRestyGzipCompLevel}}", fmt.Sprintf("%d", cfg.GzipCompLevel),
+		"{{OpenRestyGzipMinLength}}", strconv.Itoa(cfg.GzipMinLength),
+		"{{OpenRestyGzipCompLevel}}", strconv.Itoa(cfg.GzipCompLevel),
 		"{{OpenRestyResolverDirective}}", renderTemplateDirective(cfg.Resolvers != "", fmt.Sprintf("resolver %s;", cfg.Resolvers)),
 		"{{OpenRestyCacheBlock}}", renderOpenRestyCacheTemplateBlock(cfg, limitReqRates),
 		"{{OpenRestyRouteConfigInclude}}", RouteConfigPlaceholder,
@@ -765,7 +766,7 @@ func renderDefaultServerBlock(statusCode int, http3Enabled bool) string {
 		"    }",
 		"",
 		"    server {",
-		fmt.Sprintf("        listen 443 ssl default_server;%s", h3Default),
+		"        listen 443 ssl default_server;" + h3Default,
 		"        server_name _;",
 		"",
 		"        ssl_reject_handshake on;",
@@ -946,7 +947,7 @@ func buildPathPrefixMatchPattern(rules []string) string {
 			parts = append(parts, "/")
 			continue
 		}
-		parts = append(parts, fmt.Sprintf("%s(?:/|$)", regexp.QuoteMeta(trimmed)))
+		parts = append(parts, regexp.QuoteMeta(trimmed)+"(?:/|$)")
 	}
 	return fmt.Sprintf("^(?:%s)", strings.Join(parts, "|"))
 }

pkg/render/openresty/status_codes.go

@@ -4,6 +4,7 @@
 package openresty
 
 import (
+	"errors"
 	"fmt"
 	"sort"
 	"strconv"
@@ -22,7 +23,7 @@ const (
 func ParseStatusCodeTag(tag string) (lo, hi int, err error) {
 	tag = strings.TrimSpace(tag)
 	if tag == "" {
-		return 0, 0, fmt.Errorf("状态码标签不能为空")
+		return 0, 0, errors.New("状态码标签不能为空")
 	}
 	if before, after, ok := strings.Cut(tag, "-"); ok {
 		lo, err = strconv.Atoi(before)