fix: multi-node online stats, per-node Hy2 ports, and panel reload stability

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

panel/static/app.js

@@ -102,6 +102,33 @@ function setButtonBusy(btn, busy, busyText) {
   }
 }
 
+async function readJson(res) {
+  const text = await res.text();
+  try {
+    return JSON.parse(text);
+  } catch {
+    throw new Error(res.ok ? "响应格式错误" : `HTTP ${res.status}`);
+  }
+}
+
+async function reloadPanel(maxWaitMs = 15000) {
+  const url = `${panelBase()}/`;
+  const started = Date.now();
+  while (Date.now() - started < maxWaitMs) {
+    await new Promise((r) => setTimeout(r, 1500));
+    try {
+      const res = await fetch(url, { credentials: "same-origin" });
+      if (res.ok) {
+        location.href = url;
+        return;
+      }
+    } catch {
+      /* sing-box 重启期间可能短暂不可用，继续重试 */
+    }
+  }
+  location.href = url;
+}
+
 if (confirmAddBtn) {
   confirmAddBtn.addEventListener("click", async () => {
     const name = nodeName.value.trim() || "新节点";
@@ -114,10 +141,11 @@ if (confirmAddBtn) {
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({ name }),
       });
-      const data = await res.json();
+      const data = await readJson(res);
       if (!res.ok) throw new Error(data.error || "创建失败");
       toast("节点已创建，配置生效中…");
-      setTimeout(() => location.reload(), 600);
+      modal.classList.add("hidden");
+      reloadPanel();
     } catch (err) {
       toast(err.message || "创建失败");
       setButtonBusy(confirmAddBtn, false);
@@ -136,10 +164,10 @@ document.querySelectorAll(".delete-btn").forEach((btn) => {
         method: "DELETE",
         credentials: "same-origin",
       });
-      const data = await res.json();
+      const data = await readJson(res);
       if (!res.ok) throw new Error(data.error || "删除失败");
       toast("已删除，配置生效中…");
-      setTimeout(() => location.reload(), 600);
+      reloadPanel();
     } catch (err) {
       toast(err.message || "删除失败");
       setButtonBusy(btn, false);