docs(gateway): gateway 剩余文件注释改中文（逐行 1:1，代码零字节改动）

主人 2026-10-03 拍板「注释一律中文」；gateway 至此整包注释中文化完成（本会话共 3 批：
已推库 16 个文件 + 本批剩余文件）。
校验：机械校验（非注释改动行）= 空；剥注释后代码文本逐行比对全等（不一致文件数 0）；
全树 go test ./... 58 包 ok / 0 FAIL；交叉编译绿。

internal/services/gateway/observability_logs.go

@@ -11,16 +11,16 @@ import (
 	"git.yeij.top/AskaEth/Cyrene_v2/internal/logger"
 )
 
-// Log-tail endpoint tuning. Compile-time constants (project rule §10).
+// 日志尾部端点的调参。编译期常量（项目规范 §10）。
 const (
 	defaultLogLimit = 200
 	maxLogLimit     = 1000
 )
 
-// AdminLogEntry is the wire shape of one entry in
-// GET /api/v1/admin/observability/logs: {time,level,source,msg}. `time` is
-// RFC3339 UTC (matching trace/audit); `level` ∈ debug|info|warn|error; `source`
-// is the record's provenance tag, empty when the record carried none.
+// AdminLogEntry 是 GET /api/v1/admin/observability/logs 中一个条目的
+// 线上结构：{time,level,source,msg}。`time` 是
+// RFC3339 UTC（与 trace/audit 一致）；`level` ∈ debug|info|warn|error；`source`
+// 是记录的来源标签，记录未携带时为空。
 type AdminLogEntry struct {
 	Time   string `json:"time"`
 	Level  string `json:"level"`
@@ -28,10 +28,10 @@ type AdminLogEntry struct {
 	Msg    string `json:"msg"`
 }
 
-// SetLogBuffer injects the process-wide log ring buffer behind
-// GET /api/v1/admin/observability/logs. The composition root calls it once the
-// gateway exists (the logger is built before the gateway); until then the
-// endpoint answers 501. It is safe to call concurrently.
+// SetLogBuffer 注入 GET /api/v1/admin/observability/logs 背后的
+// 进程级日志环形缓冲。组合根在网关存在后调用它
+// （logger 先于网关构建）；在那之前该
+// 端点返回 501。并发调用是安全的。
 func (s *Server) SetLogBuffer(buf *logger.RingBuffer) {
 	if s == nil || s.obs == nil {
 		return
@@ -39,7 +39,7 @@ func (s *Server) SetLogBuffer(buf *logger.RingBuffer) {
 	s.obs.logBuf.Store(buf)
 }
 
-// logBuffer returns the injected log ring buffer, or nil when none was injected.
+// logBuffer 返回已注入的日志环形缓冲，未注入时为 nil。
 func (s *Server) logBuffer() *logger.RingBuffer {
 	if s == nil || s.obs == nil {
 		return nil
@@ -47,10 +47,10 @@ func (s *Server) logBuffer() *logger.RingBuffer {
 	return s.obs.logBuf.Load()
 }
 
-// adminObservabilityLogs returns the most recent backend log records, newest
-// first, optionally filtered to a minimum level (admin read). It is the backend
-// behind the panel's log tail: the records come from the logger's own ring
-// buffer and nothing is re-rendered or fabricated.
+// adminObservabilityLogs 返回最近的后端日志记录，最新
+// 优先，可选按最低级别过滤（管理读）。它是面板日志
+// 尾部背后的后端：记录来自 logger 自身的环形
+// 缓冲，没有任何东西被重新渲染或编造。
 func (s *Server) adminObservabilityLogs(w http.ResponseWriter, r *http.Request) {
 	minLevel, filtered, ok := parseLogLevel(r.URL.Query().Get("level"))
 	if !ok {
@@ -85,7 +85,7 @@ func (s *Server) adminObservabilityLogs(w http.ResponseWriter, r *http.Request)
 	writeJSON(w, http.StatusOK, out)
 }
 
-// adminLogOf maps a captured log entry to the camelCase admin wire shape.
+// adminLogOf 把捕获的日志条目映射为驼峰式管理线上结构。
 func adminLogOf(e logger.Entry) AdminLogEntry {
 	return AdminLogEntry{
 		Time:   e.Time.UTC().Format(time.RFC3339),
@@ -95,9 +95,9 @@ func adminLogOf(e logger.Entry) AdminLogEntry {
 	}
 }
 
-// parseLogLevel resolves the ?level= filter. An empty value disables filtering
-// (filtered=false); debug/info/warn/error select that level and above; anything
-// else is rejected with ok=false so the handler answers 400.
+// parseLogLevel 解析 ?level= 过滤器。空值关闭过滤
+// （filtered=false）；debug/info/warn/error 选中该级别及以上；其他任何
+// 取值都以 ok=false 拒绝，使 handler 返回 400。
 func parseLogLevel(raw string) (min slog.Level, filtered, ok bool) {
 	switch strings.ToLower(strings.TrimSpace(raw)) {
 	case "":
@@ -115,8 +115,8 @@ func parseLogLevel(raw string) (min slog.Level, filtered, ok bool) {
 	}
 }
 
-// parseLogLimit parses the ?limit= query param, clamping to [1, maxLogLimit] and
-// selecting defaultLogLimit when absent or invalid.
+// parseLogLimit 解析 ?limit= 查询参数，夹取到 [1, maxLogLimit] 并在
+// 缺失或非法时选用 defaultLogLimit。
 func parseLogLimit(r *http.Request) int {
 	n, err := strconv.Atoi(r.URL.Query().Get("limit"))
 	if err != nil || n <= 0 {