fix: restore reviewable migration evidence

logger/model.go

@@ -0,0 +1,24 @@
+package logger
+
+import "time"
+
+// LogEntry 表示一次代理请求的完整记录。
+type LogEntry struct {
+	RequestID         string
+	Method            string
+	Path              string
+	Query             string
+	ClientIP          string
+	RequestHeaders    []byte // JSON
+	RequestBody       []byte
+	RequestTruncated  bool
+	StatusCode        int
+	ResponseHeaders   []byte // JSON
+	ResponseBody      []byte
+	ResponseTruncated bool
+	IsStream          bool
+	LatencyMS         int64
+	StartedAt         time.Time
+	FinishedAt        time.Time
+	Error             string
+}