fix: unblock add-node API and improve online status detection

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

panel/static/app.js

@@ -90,23 +90,38 @@ if (cancelBtn) {
   cancelBtn.addEventListener("click", () => modal.classList.add("hidden"));
 }
 
+function setButtonBusy(btn, busy, busyText) {
+  if (!btn) return;
+  if (busy) {
+    if (!btn.dataset.label) btn.dataset.label = btn.textContent;
+    btn.textContent = busyText;
+    btn.disabled = true;
+  } else {
+    btn.textContent = btn.dataset.label || btn.textContent;
+    btn.disabled = false;
+  }
+}
+
 if (confirmAddBtn) {
   confirmAddBtn.addEventListener("click", async () => {
     const name = nodeName.value.trim() || "新节点";
-    confirmAddBtn.disabled = true;
+    setButtonBusy(confirmAddBtn, true, "创建中…");
+    if (cancelBtn) cancelBtn.disabled = true;
     try {
       const res = await fetch(apiUrl("/api/nodes"), {
         method: "POST",
+        credentials: "same-origin",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({ name }),
       });
       const data = await res.json();
       if (!res.ok) throw new Error(data.error || "创建失败");
-      location.reload();
+      toast("节点已创建，配置生效中…");
+      setTimeout(() => location.reload(), 600);
     } catch (err) {
-      toast(err.message);
-    } finally {
-      confirmAddBtn.disabled = false;
+      toast(err.message || "创建失败");
+      setButtonBusy(confirmAddBtn, false);
+      if (cancelBtn) cancelBtn.disabled = false;
     }
   });
 }
@@ -115,15 +130,19 @@ document.querySelectorAll(".delete-btn").forEach((btn) => {
   btn.addEventListener("click", async () => {
     const id = btn.dataset.id;
     if (!confirm("确定删除该节点？删除后对应链接将失效。")) return;
-    btn.disabled = true;
+    setButtonBusy(btn, true, "删除中…");
     try {
-      const res = await fetch(apiUrl(`/api/nodes/${id}`), { method: "DELETE" });
+      const res = await fetch(apiUrl(`/api/nodes/${id}`), {
+        method: "DELETE",
+        credentials: "same-origin",
+      });
       const data = await res.json();
       if (!res.ok) throw new Error(data.error || "删除失败");
-      location.reload();
+      toast("已删除，配置生效中…");
+      setTimeout(() => location.reload(), 600);
     } catch (err) {
-      toast(err.message);
-      btn.disabled = false;
+      toast(err.message || "删除失败");
+      setButtonBusy(btn, false);
     }
   });
 });