diff --git a/sundynix-desktop/frontend/src/shell/JarvisSettings.tsx b/sundynix-desktop/frontend/src/shell/JarvisSettings.tsx
index 59b28c3..76fdbab 100644
--- a/sundynix-desktop/frontend/src/shell/JarvisSettings.tsx
+++ b/sundynix-desktop/frontend/src/shell/JarvisSettings.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import { Dialog } from "../ui/Dialog";
 import { Button } from "../ui/Button";
 import { useToast } from "../ui/Toast";
@@ -15,19 +15,31 @@ import {
 
 // 每用户 JARVIS 设置：名字 / 人设 / （高级）自带豆包配置。
 // 名字与人设归用户自己；豆包配置齐全则语音走用户的账号，否则走系统兜底。
-export function JarvisSettings({ open, onClose }: { open: boolean; onClose: () => void }) {
+export function JarvisSettings({
+  open,
+  onClose,
+  onSaved,
+}: {
+  open: boolean;
+  onClose: () => void;
+  onSaved?: () => void; // 保存成功后通知外层刷新（名字要立刻反映到语音坞/HUD，否则看不出生效）
+}) {
   const toast = useToast();
   const [cfg, setCfg] = useState<JarvisConfig | null>(null);
+  const toastRef = useRef(toast); // effect 里用 ref 取最新 toast，避免它进依赖
+  toastRef.current = toast;
   const [saving, setSaving] = useState(false);
   const [advanced, setAdvanced] = useState(false);
 
+  // 只在"打开"时拉一次。toast 不能进依赖——它一变就会重拉配置、把用户正在填的内容覆盖掉。
   useEffect(() => {
     if (!open) return;
     setCfg(null);
     getMyJarvis()
       .then(setCfg)
-      .catch((e) => toast.push("error", (e as Error).message));
-  }, [open, toast]);
+      .catch((e) => toastRef.current.push("error", (e as Error).message));
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [open]);
 
   const set = (k: keyof JarvisConfig, v: string) => setCfg((c) => (c ? { ...c, [k]: v } : c));
 
@@ -43,7 +55,8 @@ export function JarvisSettings({ open, onClose }: { open: boolean; onClose: () =
         tts_resource_id: cfg.tts_resource_id,
         tts_voice_type: cfg.tts_voice_type,
       });
-      toast.push("success", "已保存，下次说话即生效");
+      toast.push("success", `已保存：${cfg.name.trim() || "JARVIS"} · 下次说话即生效`);
+      onSaved?.();
       onClose();
     } catch (e) {
       toast.push("error", (e as Error).message);
@@ -72,6 +85,15 @@ export function JarvisSettings({ open, onClose }: { open: boolean; onClose: () =
         <div className="text-slate-500">加载中…</div>
       ) : (
         <div className="space-y-4">
+          <div className="rounded-md border border-line bg-ink-900/50 px-3 py-2 text-[11px] leading-relaxed text-slate-500">
+            当前生效：助手名 <b className="text-slate-300">{cfg.name.trim() || "JARVIS"}</b>
+            {" · "}人设 <b className="text-slate-300">{cfg.persona.trim() ? "已自定义" : "默认平和"}</b>
+            {" · "}语音走 <b className="text-slate-300">{cfg.has_own_voice ? "你自己的豆包配置" : "系统配置"}</b>
+            <span className="mt-0.5 block">
+              验证是否生效：保存后按住空格问一句「你是谁」，它会用这个名字自称。
+            </span>
+          </div>
+
           <label className="block">
             <span className="text-xs text-slate-400">助手名字</span>
             <input
diff --git a/sundynix-desktop/frontend/src/shell/VoiceDock.tsx b/sundynix-desktop/frontend/src/shell/VoiceDock.tsx
index 0e3623c..754ed46 100644
--- a/sundynix-desktop/frontend/src/shell/VoiceDock.tsx
+++ b/sundynix-desktop/frontend/src/shell/VoiceDock.tsx
@@ -108,12 +108,14 @@ export function VoiceDock({ onTask, onNavigate }: Props) {
   const onNavigateRef = useRef(onNavigate);
   onNavigateRef.current = onNavigate;
 
-  // 助手名：挂载即拉一次（未登录/失败保持默认）。
-  useEffect(() => {
+  // 助手名：挂载即拉一次（未登录/失败保持默认）。设置里保存后也会调它重拉——
+  // 否则改完名字这里还挂着旧的，用户根本看不出配置生效了没。
+  const refreshName = useCallback(() => {
     getMyJarvis()
       .then((j) => setName(j.name || "JARVIS"))
       .catch(() => {});
   }, []);
+  useEffect(refreshName, [refreshName]);
 
   // 懒建客户端（首次点按时，带上用户手势→AudioContext 才能启动）。
   const ensureClient = useCallback((): VoiceClient => {
@@ -439,7 +441,7 @@ export function VoiceDock({ onTask, onNavigate }: Props) {
         {hint}
       </span>
     </div>
-    <JarvisSettings open={settingsOpen} onClose={() => setSettingsOpen(false)} />
+    <JarvisSettings open={settingsOpen} onClose={() => setSettingsOpen(false)} onSaved={refreshName} />
     {fullscreen && (
       <JarvisHud
         name={name}
diff --git a/sundynix-desktop/frontend/src/ui/Toast.tsx b/sundynix-desktop/frontend/src/ui/Toast.tsx
index ffe1d4e..2f917bf 100644
--- a/sundynix-desktop/frontend/src/ui/Toast.tsx
+++ b/sundynix-desktop/frontend/src/ui/Toast.tsx
@@ -1,4 +1,4 @@
-import { createContext, useCallback, useContext, useRef, useState, type ReactNode } from "react";
+import { createContext, useCallback, useContext, useMemo, useRef, useState, type ReactNode } from "react";
 import { CheckCircle2, AlertTriangle, Info, X } from "lucide-react";
 import { cn } from "./cn";
 
@@ -39,8 +39,13 @@ export function ToastProvider({ children }: { children: ReactNode }) {
 
   const dismiss = (id: number) => setToasts((t) => t.filter((x) => x.id !== id));
 
+  // 必须 useMemo：`value={{ push }}` 每次渲染都造新对象，凡是把 useToast() 结果放进
+  // useEffect 依赖的组件（有 7 处）都会在**任意一条 toast 弹出时**重跑 effect。
+  // JarvisSettings 因此边填边被重新拉取覆盖；拉取失败还会 push 错误 toast → 无限循环狂闪。
+  const value = useMemo(() => ({ push }), [push]);
+
   return (
-    <Ctx.Provider value={{ push }}>
+    <Ctx.Provider value={value}>
       {children}
       <div className="pointer-events-none fixed bottom-4 right-4 z-50 flex w-80 flex-col gap-2">
         {toasts.map((t) => {