add persistent proxy/visitor store with CRUD API and web UI (#5188)

web/frps/src/components/ClientCard.vue

@@ -13,6 +13,9 @@
         <span v-if="client.hostname" class="hostname-badge">{{
           client.hostname
         }}</span>
+        <el-tag v-if="client.version" size="small" type="success"
+          >v{{ client.version }}</el-tag
+        >
       </div>
 
       <div class="card-meta">

web/frps/src/components/Traffic.vue

@@ -86,7 +86,7 @@ const processData = (trafficIn: number[], trafficOut: number[]) => {
 
   // Calculate dates (last 7 days ending today)
   const dates: string[] = []
-  let d = new Date()
+  const d = new Date()
   d.setDate(d.getDate() - 6)
 
   for (let i = 0; i < 7; i++) {