Release 3.8.1.1: lighter idle UI poll, core cache, multicore ping.

Reduce idle CPU (cheap PollUI, binary cache, logbuf cap, DOM fingerprint),
speed ping/AWG HostPort, CopyBuffer pool; ship arm64 build and update notes.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/appui/app.js

@@ -202,6 +202,22 @@
       (pings || []).forEach((p) => { pingMap[p.name] = p; });
     }
 
+    let listFP = "";
+
+    function profilesFingerprint(state) {
+      const parts = [
+        state.connected ? "1" : "0",
+        state.active_profile || state.profile || "",
+      ];
+      (state.profiles || []).forEach((p) => {
+        parts.push(p.name + "|" + (p.protocol || "") + "|" + (p.host || ""));
+      });
+      (state.pings || []).forEach((p) => {
+        parts.push(p.name + "|" + (p.ok ? 1 : 0) + "|" + (p.ms || 0) + "|" + (p.error || ""));
+      });
+      return parts.join("\n");
+    }
+
     function fillProfiles(list, active) {
       profiles = list || [];
       const cur = profile.value;
@@ -361,7 +377,11 @@
       btn.disabled = busy;
 
       rememberPings(state.pings || []);
-      fillProfiles(state.profiles || [], state.active_profile || state.profile);
+      const fp = profilesFingerprint(state);
+      if (syncForm || fp !== listFP) {
+        listFP = fp;
+        fillProfiles(state.profiles || [], state.active_profile || state.profile);
+      }
       renderUpdate(state.update, state.version);
       if (typeof state.subscription_url === "string" && !dirty) {
         subUrl.value = state.subscription_url;
@@ -641,5 +661,5 @@
         setMeta(String(e), "err");
       }
     })();
-    setInterval(() => { if (!busy && !modal.classList.contains("open")) refresh().catch(() => {}); }, 2500);
+    setInterval(() => { if (!busy && !modal.classList.contains("open")) refresh().catch(() => {}); }, 4000);
   

internal/appui/index.html

@@ -46,7 +46,7 @@
       <div class="brand-wrap">
         <div class="brand-row">
           <h1 class="brand">Navis</h1>
-          <span class="badge-ver" id="badgeVer">3.8.0</span>
+          <span class="badge-ver" id="badgeVer">3.8.1</span>
         </div>
         <p class="tagline">Быстрый клиент · Naive · Hy2 · AWG · Xray</p>
       </div>