refactor(models,web): Update JSON serialization and formatting utilities

- Modify RequestLog struct to use PascalCase JSON tags
- Enhance formatBytes function to handle undefined or NaN inputs
- Update formatDate to return full datetime and handle empty inputs
- Add null/NaN checks to formatLatency for more robust display

internal/models/request.go

@@ -7,12 +7,12 @@ import (
 
 // RequestLog 请求日志
 type RequestLog struct {
-	Time      time.Time `json:"time"`
-	Path      string    `json:"path"`
-	Status    int       `json:"status"`
-	Latency   int64     `json:"latency"`
-	BytesSent int64     `json:"bytes_sent"`
-	ClientIP  string    `json:"client_ip"`
+	Time      time.Time `json:"Time"`
+	Path      string    `json:"Path"`
+	Status    int       `json:"Status"`
+	Latency   int64     `json:"Latency"`
+	BytesSent int64     `json:"BytesSent"`
+	ClientIP  string    `json:"ClientIP"`
 }
 
 // PathMetrics 路径指标

web/app/dashboard/page.tsx

@@ -279,7 +279,7 @@ export default function DashboardPage() {
 }
 
 function formatBytes(bytes: number) {
-  if (bytes === 0) return "0 B"
+  if (!bytes || isNaN(bytes)) return "0 B"
   const k = 1024
   const sizes = ["B", "KB", "MB", "GB"]
   const i = Math.floor(Math.log(bytes) / Math.log(k))
@@ -287,11 +287,13 @@ function formatBytes(bytes: number) {
 }
 
 function formatDate(dateStr: string) {
+  if (!dateStr) return "-"
   const date = new Date(dateStr)
-  return date.toLocaleTimeString()
+  return date.toLocaleString()
 }
 
 function formatLatency(nanoseconds: number) {
+  if (!nanoseconds || isNaN(nanoseconds)) return "-"
   if (nanoseconds < 1000) {
     return nanoseconds + " ns"
   } else if (nanoseconds < 1000000) {