diff --git a/call-client/package.json b/call-client/package.json
index f07d421..e0163c7 100644
--- a/call-client/package.json
+++ b/call-client/package.json
@@ -1,7 +1,7 @@
 {
   "name": "call-client",
   "private": true,
-  "version": "0.1.3",
+  "version": "0.1.4",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/call-client/src-tauri/Cargo.lock b/call-client/src-tauri/Cargo.lock
index 2cff125..9175349 100644
--- a/call-client/src-tauri/Cargo.lock
+++ b/call-client/src-tauri/Cargo.lock
@@ -392,7 +392,7 @@ dependencies = [
 
 [[package]]
 name = "call-client"
-version = "0.1.3"
+version = "0.1.4"
 dependencies = [
  "chrono",
  "fs2",
diff --git a/call-client/src-tauri/Cargo.toml b/call-client/src-tauri/Cargo.toml
index 24e6304..40040eb 100644
--- a/call-client/src-tauri/Cargo.toml
+++ b/call-client/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "call-client"
-version = "0.1.3"
+version = "0.1.4"
 description = "A Tauri App"
 authors = ["you"]
 edition = "2021"
diff --git a/call-client/src-tauri/src/commands/config.rs b/call-client/src-tauri/src/commands/config.rs
index 15ad6cd..7ddd669 100644
--- a/call-client/src-tauri/src/commands/config.rs
+++ b/call-client/src-tauri/src/commands/config.rs
@@ -3,6 +3,7 @@ use std::{
     env,
     fs,
     path::{Path, PathBuf},
+    sync::{Mutex, OnceLock},
 };
 
 use serde_json::{Map, Value};
@@ -72,6 +73,15 @@ fn write_config(value: &Value) -> Result<(), String> {
     fs::write(path, content).map_err(|error| format!("写入配置文件失败: {error}"))
 }
 
+static CONFIG_IO_MUTEX: OnceLock<Mutex<()>> = OnceLock::new();
+
+fn lock_config_io() -> Result<std::sync::MutexGuard<'static, ()>, String> {
+    let mutex = CONFIG_IO_MUTEX.get_or_init(|| Mutex::new(()));
+    mutex
+        .lock()
+        .map_err(|_| "配置文件锁异常（poisoned）".to_string())
+}
+
 fn merge_value(target: &mut Value, patch: Value) {
     match (target, patch) {
         (Value::Object(target_map), Value::Object(patch_map)) => {
@@ -91,6 +101,7 @@ fn merge_value(target: &mut Value, patch: Value) {
 
 #[tauri::command]
 pub fn config_get_all() -> Result<BTreeMap<String, Value>, String> {
+    let _guard = lock_config_io()?;
     let value = read_config()?;
     let Value::Object(map) = value else {
         return Ok(BTreeMap::new());
@@ -99,8 +110,18 @@ pub fn config_get_all() -> Result<BTreeMap<String, Value>, String> {
     Ok(map.into_iter().collect())
 }
 
+/// 与 `config_merge` 相同磁盘语义，供后台线程等非 invoke 路径调用；带全局锁避免与前端合并写交错。
+pub fn merge_config_disk(partial: Value) -> Result<(), String> {
+    let _guard = lock_config_io()?;
+    let mut current = read_config()?;
+    merge_value(&mut current, partial);
+    write_config(&current)?;
+    Ok(())
+}
+
 #[tauri::command]
 pub fn config_merge(partial: Value) -> Result<BTreeMap<String, Value>, String> {
+    let _guard = lock_config_io()?;
     let mut current = read_config()?;
     merge_value(&mut current, partial);
     write_config(&current)?;
diff --git a/call-client/src-tauri/src/commands/update.rs b/call-client/src-tauri/src/commands/update.rs
index 17c3552..f2e299a 100644
--- a/call-client/src-tauri/src/commands/update.rs
+++ b/call-client/src-tauri/src/commands/update.rs
@@ -1,9 +1,8 @@
 use serde::Serialize;
 #[cfg(target_os = "linux")]
 use std::process::Command;
-use tauri::AppHandle;
-#[cfg(target_os = "linux")]
-use tauri::Manager;
+use tauri::{AppHandle, Manager};
+use serde_json::json;
 
 use super::logger::app_log;
 
@@ -214,6 +213,14 @@ pub fn check_apt_update(
     _app: AppHandle,
     package_name: String,
     current_version: String,
+) -> Result<AptUpdateCheckResult, String> {
+    check_apt_update_internal(package_name, current_version)
+}
+
+/// 供 `check_apt_update` 命令与启动后台线程复用。
+pub(crate) fn check_apt_update_internal(
+    package_name: String,
+    current_version: String,
 ) -> Result<AptUpdateCheckResult, String> {
     let _ = app_log(
         "info".to_string(),
@@ -412,6 +419,61 @@ pub fn check_apt_update(
     }
 }
 
+/// 与前端 `listen('pending-call-client-update-synced')` 一致：后台 apt 检测已落盘 config 后广播。
+pub const PENDING_CALL_CLIENT_UPDATE_SYNCED_EVENT: &str = "pending-call-client-update-synced";
+
+/// 将 `check_apt_update` 结果同步到 `pending_call_client_update`（与前端约定一致）。
+pub fn apply_pending_call_client_update_config(r: &AptUpdateCheckResult) -> Result<(), String> {
+    if r.has_update && r.source_available {
+        super::config::merge_config_disk(json!({
+            "pending_call_client_update": {
+                "candidateVersion": r.candidate_version
+            }
+        }))
+    } else if r.source_available {
+        super::config::merge_config_disk(json!({
+            "pending_call_client_update": null
+        }))
+    } else {
+        Ok(())
+    }
+}
+
+/// 启动后后台执行 apt 检测并写 config，不阻塞 UI；完成后 `emit_all` 便于登录页刷新角标。
+pub fn spawn_background_pending_call_client_update_sync(app: AppHandle) {
+    std::thread::spawn(move || {
+        let version = app.package_info().version.to_string();
+        match check_apt_update_internal("call-client".to_string(), version) {
+            Ok(r) => match apply_pending_call_client_update_config(&r) {
+                Ok(()) => {
+                    let _ = app_log(
+                        "info".to_string(),
+                        "[update-badge] 后台 apt 检查已完成并写入 config（如需）".to_string(),
+                    );
+                    let payload = json!({
+                        "hasUpdate": r.has_update,
+                        "sourceAvailable": r.source_available,
+                        "candidateVersion": r.candidate_version,
+                    });
+                    let _ = app.emit_all(PENDING_CALL_CLIENT_UPDATE_SYNCED_EVENT, payload);
+                }
+                Err(e) => {
+                    let _ = app_log(
+                        "error".to_string(),
+                        format!("[update-badge] 后台同步 pending 配置失败: {e}"),
+                    );
+                }
+            },
+            Err(msg) => {
+                let _ = app_log(
+                    "debug".to_string(),
+                    format!("[update-badge] 后台 apt 检查未执行: {msg}"),
+                );
+            }
+        }
+    });
+}
+
 /// 首次配置：写入紫云 apt 源并执行 `apt-get update`（需图形环境 `pkexec` 授权）。
 #[tauri::command]
 pub fn setup_zyyun_apt_source(app: AppHandle, deb_line: String) -> Result<(), String> {
diff --git a/call-client/src-tauri/src/lib.rs b/call-client/src-tauri/src/lib.rs
index 9944253..3ddcf4d 100644
--- a/call-client/src-tauri/src/lib.rs
+++ b/call-client/src-tauri/src/lib.rs
@@ -12,7 +12,10 @@ use commands::{
     logger::{app_log, get_log_paths},
     session::{session_clear, session_get, session_set},
     sync::{cleanup_screen_sync, start_screen_sync, stop_screen_sync},
-    update::{check_apt_update, setup_zyyun_apt_source, upgrade_call_client_via_apt},
+    update::{
+        check_apt_update, setup_zyyun_apt_source,
+        spawn_background_pending_call_client_update_sync, upgrade_call_client_via_apt,
+    },
     window::{
         close_taxer_info_window, close_ticket_window, ensure_main_window, focus_window,
         open_login_window, open_main_window, open_taxer_info_window, open_ticket_window, quit_app,
@@ -107,6 +110,7 @@ pub fn run() {
             }
 
             ensure_main_window(app.handle())?;
+            spawn_background_pending_call_client_update_sync(app.handle());
             Ok(())
         })
         .invoke_handler(tauri::generate_handler![
diff --git a/call-client/src-tauri/tauri.conf.json b/call-client/src-tauri/tauri.conf.json
index 501e3f5..758d6ad 100644
--- a/call-client/src-tauri/tauri.conf.json
+++ b/call-client/src-tauri/tauri.conf.json
@@ -2,7 +2,7 @@
   "$schema": "../node_modules/@tauri-apps/cli/schema.json",
   "package": {
     "productName": "call-client",
-    "version": "0.1.3"
+    "version": "0.1.4"
   },
   "build": {
     "beforeDevCommand": "npm run dev",
diff --git a/call-client/src/host/types.ts b/call-client/src/host/types.ts
index 59838b1..77c7e49 100644
--- a/call-client/src/host/types.ts
+++ b/call-client/src/host/types.ts
@@ -63,4 +63,12 @@ export interface TaxerTicketContextPayload {
 
 export type AppConfig = Record<string, JsonValue>;
 
+/**
+ * 登录页「有新版本」角标持久化项，写入 `config.json` 的 `pending_call_client_update`。
+ * 后台探测到可升级候选版本时写入；无更新或升级成功后清除。
+ */
+export interface PendingCallClientUpdateStored {
+  candidateVersion: string;
+}
+
 export type LogLevel = "debug" | "info" | "warn" | "error";
diff --git a/call-client/src/views/LoginView.vue b/call-client/src/views/LoginView.vue
index ddfe9dd..580b94b 100644
--- a/call-client/src/views/LoginView.vue
+++ b/call-client/src/views/LoginView.vue
@@ -1,5 +1,11 @@
 <script setup lang="ts">
-import { Close, Lock, Minus, User } from "@element-plus/icons-vue";
+import {
+  Close,
+  Lock,
+  Minus,
+  User,
+  WarningFilled,
+} from "@element-plus/icons-vue";
 import { ElDialog, ElForm, ElMessage, ElProgress } from "element-plus";
 // 报错统一走 host/dialog 原生 message，勿用 ElMessage.error
 import { getVersion } from "@tauri-apps/api/app";
@@ -7,11 +13,16 @@ import { listen } from "@tauri-apps/api/event";
 import { invoke } from "@tauri-apps/api/tauri";
 import { computed, onMounted, onUnmounted, reactive, ref } from "vue";
 import { api } from "../api";
-import { confirmNative, showErrorNative, showInfoNative, showWarningNative } from "../host/dialog";
 import { getAllConfig, mergeConfig } from "../host/config";
+import {
+  confirmNative,
+  showErrorNative,
+  showInfoNative,
+  showWarningNative,
+} from "../host/dialog";
 import { log } from "../host/logger";
 import { setSession } from "../host/session";
-import type { SessionState } from "../host/types";
+import type { AppConfig, JsonValue, SessionState } from "../host/types";
 import {
   closeWindow,
   minimizeWindow,
@@ -19,6 +30,13 @@ import {
   startWindowDragging,
 } from "../host/window";
 
+/** `config.json` 中持久化「有待升级的 call-client 候选版本」 */
+const PENDING_CALL_CLIENT_UPDATE_KEY = "pending_call_client_update";
+
+/** 与 Rust `commands::update::PENDING_CALL_CLIENT_UPDATE_SYNCED_EVENT` 一致 */
+const PENDING_CALL_CLIENT_UPDATE_SYNCED_EVENT =
+  "pending-call-client-update-synced";
+
 /** el-form 需要稳定引用，勿使用每次渲染新建的 `{ username, password }` 对象 */
 const loginForm = reactive({
   username: "admin",
@@ -32,6 +50,9 @@ const selectedWin = ref("");
 const cachedWinKey = ref("");
 const options = ref<Array<{ label: string; value: string }>>([]);
 const appVersion = ref("0.1.0");
+/** 与 config / apt 检查结果同步：有可升级的候选版本时为 true（仅 UI 提示） */
+const newVersionBadgeVisible = ref(false);
+const newVersionCandidateText = ref("");
 const checkingUpdate = ref(false);
 const ZYYUN_APT_SETUP_PROGRESS_EVENT = "zyyun-apt-setup-progress";
 
@@ -39,7 +60,9 @@ const aptSetupDialogVisible = ref(false);
 const aptSetupPercent = ref(0);
 const aptSetupHint = ref("");
 const aptSetupFinished = ref(false);
-const aptSetupProgressStatus = ref<"success" | "exception" | undefined>(undefined);
+const aptSetupProgressStatus = ref<"success" | "exception" | undefined>(
+  undefined,
+);
 
 /** 默认紫云 apt 源行；可通过配置项 apt_source_deb_line 覆盖（见 ~/.config/com.ziyun.callclient/config.json） */
 const DEFAULT_APT_SOURCE_DEB_LINE =
@@ -61,6 +84,89 @@ interface AptSetupProgressPayload {
   message: string;
 }
 
+interface PendingCallClientUpdateSyncedPayload {
+  hasUpdate?: boolean;
+  sourceAvailable?: boolean;
+  candidateVersion?: string;
+}
+
+/** Rust 后台 apt 检测落盘 config 后广播，用于刷新角标（与页面生命周期无关） */
+function applyBadgeFromPendingSyncEvent(
+  p: PendingCallClientUpdateSyncedPayload | null | undefined,
+): void {
+  if (p == null || p.sourceAvailable !== true) {
+    return;
+  }
+  if (p.hasUpdate === true) {
+    const v =
+      typeof p.candidateVersion === "string" ? p.candidateVersion.trim() : "";
+    if (v) {
+      newVersionBadgeVisible.value = true;
+      newVersionCandidateText.value = v;
+      return;
+    }
+  }
+  clearNewVersionBadge();
+}
+
+const unlistenPendingUpdateSynced = ref<(() => void) | undefined>(undefined);
+
+function syncNewVersionBadgeFromResult(r: AptUpdateCheckResult): void {
+  const show = Boolean(r.hasUpdate && r.sourceAvailable);
+  newVersionBadgeVisible.value = show;
+  newVersionCandidateText.value = show ? r.candidateVersion : "";
+}
+
+function clearNewVersionBadge(): void {
+  newVersionBadgeVisible.value = false;
+  newVersionCandidateText.value = "";
+}
+
+/** 与 apt 结果同步角标，并在「源可用」时写入或清除 config 中的待升级记录 */
+async function syncBadgeAndPersistPendingFromResult(
+  r: AptUpdateCheckResult,
+): Promise<void> {
+  syncNewVersionBadgeFromResult(r);
+  if (r.hasUpdate && r.sourceAvailable) {
+    await persistPendingUpdateToConfig(r.candidateVersion);
+  } else if (r.sourceAvailable) {
+    await clearPendingUpdateInConfig();
+  }
+}
+
+function readPendingCandidateFromConfig(config: AppConfig): string | null {
+  const raw = config[PENDING_CALL_CLIENT_UPDATE_KEY];
+  if (raw && typeof raw === "object" && !Array.isArray(raw)) {
+    const c = (raw as Record<string, JsonValue>).candidateVersion;
+    if (typeof c === "string" && c.trim() !== "") {
+      return c.trim();
+    }
+  }
+  return null;
+}
+
+function applyPendingUpdateBadgeFromConfig(config: AppConfig): void {
+  const candidate = readPendingCandidateFromConfig(config);
+  if (candidate) {
+    newVersionBadgeVisible.value = true;
+    newVersionCandidateText.value = candidate;
+  }
+}
+
+async function persistPendingUpdateToConfig(
+  candidateVersion: string,
+): Promise<void> {
+  await mergeConfig({
+    [PENDING_CALL_CLIENT_UPDATE_KEY]: { candidateVersion },
+  });
+}
+
+async function clearPendingUpdateInConfig(): Promise<void> {
+  await mergeConfig({
+    [PENDING_CALL_CLIENT_UPDATE_KEY]: null,
+  });
+}
+
 let sessionState: SessionState = {
   empUid: null,
   winUid: null,
@@ -137,7 +243,10 @@ async function handleLogin(): Promise<void> {
         "warn",
         `登录失败: 接口未返回有效 queueToken, user=${loginForm.username}`,
       );
-      await showErrorNative("登录失败：服务器未返回有效凭据，请稍后重试。", "登录");
+      await showErrorNative(
+        "登录失败：服务器未返回有效凭据，请稍后重试。",
+        "登录",
+      );
       return;
     }
 
@@ -235,7 +344,9 @@ async function handleWindowLogin(): Promise<void> {
       const resolvedWinUid =
         Number.isFinite(callerWin) && callerWin > 0 ? callerWin : winUid;
       const callerEmp = Number(callerInit.empUid);
-      const resolvedEmpUid = Number.isFinite(callerEmp) ? callerEmp : Number(sessionState.empUid ?? -1);
+      const resolvedEmpUid = Number.isFinite(callerEmp)
+        ? callerEmp
+        : Number(sessionState.empUid ?? -1);
 
       sessionState = {
         ...sessionState,
@@ -331,22 +442,32 @@ function handleInputFocus(event: Event): void {
 /**
  * 自动写入紫云 apt 源并 apt-get update；Rust 通过事件推送进度。
  */
-async function runZyyunAptSourceSetupWithProgress(debLine: string): Promise<void> {
+async function runZyyunAptSourceSetupWithProgress(
+  debLine: string,
+): Promise<void> {
   aptSetupDialogVisible.value = true;
   aptSetupFinished.value = false;
   aptSetupPercent.value = 0;
   aptSetupHint.value = "准备中…";
   aptSetupProgressStatus.value = undefined;
 
-  const unlisten = await listen<AptSetupProgressPayload>(ZYYUN_APT_SETUP_PROGRESS_EVENT, (e) => {
-    const p = e.payload;
-    aptSetupPercent.value = Math.min(100, Math.max(0, Number(p.percent) || 0));
-    aptSetupHint.value = typeof p.message === "string" ? p.message : "";
-  });
+  const unlisten = await listen<AptSetupProgressPayload>(
+    ZYYUN_APT_SETUP_PROGRESS_EVENT,
+    (e) => {
+      const p = e.payload;
+      aptSetupPercent.value = Math.min(
+        100,
+        Math.max(0, Number(p.percent) || 0),
+      );
+      aptSetupHint.value = typeof p.message === "string" ? p.message : "";
+    },
+  );
 
   const trimmed = debLine.trim();
   const debPreview =
-    trimmed.length > 220 ? `${trimmed.slice(0, 220)}…(共 ${trimmed.length} 字符)` : trimmed;
+    trimmed.length > 220
+      ? `${trimmed.slice(0, 220)}…(共 ${trimmed.length} 字符)`
+      : trimmed;
   await log(
     "info",
     `[apt-setup][前端] 即将 invoke setup_zyyun_apt_source, debLen=${trimmed.length}, debPreview=${debPreview}`,
@@ -355,11 +476,17 @@ async function runZyyunAptSourceSetupWithProgress(debLine: string): Promise<void
   try {
     await invoke("setup_zyyun_apt_source", { debLine: trimmed });
     aptSetupProgressStatus.value = "success";
-    await log("info", "[apt-setup][前端] setup_zyyun_apt_source invoke 成功结束");
+    await log(
+      "info",
+      "[apt-setup][前端] setup_zyyun_apt_source invoke 成功结束",
+    );
   } catch (error) {
     aptSetupProgressStatus.value = "exception";
     const message = error instanceof Error ? error.message : String(error);
-    await log("error", `[apt-setup][前端] setup_zyyun_apt_source invoke 失败: ${message}`);
+    await log(
+      "error",
+      `[apt-setup][前端] setup_zyyun_apt_source invoke 失败: ${message}`,
+    );
     throw error;
   } finally {
     unlisten();
@@ -368,9 +495,9 @@ async function runZyyunAptSourceSetupWithProgress(debLine: string): Promise<void
 }
 
 /**
- * 检查 apt 仓库中是否有新版本；配源与升级均在应用内由固定 Rust 脚本 + pkexec 完成，不向用户暴露可手写的 shell 命令。
+ * 点击「有新版本」角标：配源、确认并执行 apt 升级（原「检查更新」流程）。
  */
-async function handleCheckUpdate(): Promise<void> {
+async function handleUpgradeBadgeClick(): Promise<void> {
   if (checkingUpdate.value) {
     return;
   }
@@ -405,8 +532,9 @@ async function handleCheckUpdate(): Promise<void> {
         );
         await showWarningNative(
           "本机已自动配置过紫云软件源，但 apt 仍无法解析候选版本。请联系管理员检查内网仓库、网络或密钥文件；勿在终端自行执行来源不明的更新脚本。",
-          "检查更新",
+          "升级",
         );
+        await syncBadgeAndPersistPendingFromResult(result);
         return;
       }
 
@@ -421,17 +549,21 @@ async function handleCheckUpdate(): Promise<void> {
         await log("info", "检查更新(前端): 用户在「配置更新源」对话框选择取消");
         await showInfoNative(
           [
-            "未执行自动配置。稍后可再次点击「检查更新」，在提示中选择「开始配置」并输入管理员密码，",
+            "未执行自动配置。稍后可再次点击登录页上的「有新版本」提示，在对话框中选择「开始配置」并输入管理员密码，",
             "由本程序自动完成软件源与索引更新。",
             "",
             "请勿在终端自行编写或执行未经验证的更新命令；若仍无法使用，请联系管理员。",
           ].join("\n"),
           "更新源未配置",
         );
+        await syncBadgeAndPersistPendingFromResult(result);
         return;
       }
 
-      await log("info", "检查更新(前端): 用户确认自动配置 apt 源，开始 runZyyunAptSourceSetupWithProgress");
+      await log(
+        "info",
+        "检查更新(前端): 用户确认自动配置 apt 源，开始 runZyyunAptSourceSetupWithProgress",
+      );
       await runZyyunAptSourceSetupWithProgress(aptSourceDebLine.value);
       await mergeConfig({ zyyun_apt_source_configured: true });
       await log("info", "已写入配置: zyyun_apt_source_configured=true");
@@ -449,17 +581,23 @@ async function handleCheckUpdate(): Promise<void> {
             "自动配置已完成，但 apt 仍无法解析候选版本。",
             "请联系管理员检查内网 apt 仓库、GPG 与网络；请勿在终端自行执行未经验证的安装脚本。",
             "",
-            "您可稍后再次点击「检查更新」重试。",
+            "您可稍后再次点击「有新版本」重试。",
           ].join("\n"),
           "更新源不可用",
           { logActions: "file" },
         );
+        await syncBadgeAndPersistPendingFromResult(result);
         return;
       }
     }
 
+    await syncBadgeAndPersistPendingFromResult(result);
+
     if (!result.hasUpdate) {
-      await log("info", `检查更新提示: 当前已是最新版本, version=${result.installedVersion}`);
+      await log(
+        "info",
+        `检查更新提示: 当前已是最新版本, version=${result.installedVersion}`,
+      );
       showMessage("success", `当前已是最新版本（${result.installedVersion}）`);
       return;
     }
@@ -476,6 +614,9 @@ async function handleCheckUpdate(): Promise<void> {
         "",
         "升级将由本程序在授权后固定执行（更新索引并仅升级 call-client），需在弹出框中输入管理员密码。",
         "请勿在终端自行编写或执行更新脚本。",
+        "",
+        "说明：升级完成后 apt 会更新磁盘上的程序，但当前进程仍是旧版本。",
+        "请在本提示升级流程结束后，完全退出并重新打开本客户端，新版本才会生效。",
       ].join("\n"),
       okLabel: "应用内升级",
       cancelLabel: "稍后再说",
@@ -496,13 +637,23 @@ async function handleCheckUpdate(): Promise<void> {
     } catch {
       // 忽略版本读取失败
     }
-    showMessage(
-      "success",
-      `升级已执行。界面显示版本：${appVersion.value}。若仍为旧版本，请重启本客户端后再试。`,
+    await showInfoNative(
+      [
+        "应用内升级命令已执行完成。",
+        "",
+        "apt 已更新本机安装的 call-client 安装包，但当前正在运行的客户端进程仍为旧版本，无法在不退出进程的情况下自动切换为新程序。",
+        "",
+        "请现在完全退出本客户端（关闭所有窗口，必要时从托盘退出），然后重新打开，新版本才会生效。",
+        "",
+        `界面当前显示的版本号为：${appVersion.value}（来自当前进程，在重启前可能仍显示旧版本，属正常现象。）`,
+      ].join("\n"),
+      "升级完成",
     );
+    await clearPendingUpdateInConfig();
+    clearNewVersionBadge();
   } catch (error) {
     const message = error instanceof Error ? error.message : String(error);
-    await showErrorNative(`检查更新失败：${message}`, "检查更新", {
+    await showErrorNative(`升级失败：${message}`, "升级", {
       logActions: "file",
     });
     await log("error", `检查更新失败: ${message}`);
@@ -536,10 +687,19 @@ onMounted(async () => {
     selectedWin.value = config.selected_win_key;
   }
   window.addEventListener("keydown", handleKeyPress);
+  applyPendingUpdateBadgeFromConfig(config);
+  unlistenPendingUpdateSynced.value = await listen<PendingCallClientUpdateSyncedPayload>(
+    PENDING_CALL_CLIENT_UPDATE_SYNCED_EVENT,
+    (event) => {
+      applyBadgeFromPendingSyncEvent(event.payload);
+    },
+  );
 });
 
 onUnmounted(() => {
   window.removeEventListener("keydown", handleKeyPress);
+  unlistenPendingUpdateSynced.value?.();
+  unlistenPendingUpdateSynced.value = undefined;
 });
 </script>
 
@@ -700,16 +860,25 @@ onUnmounted(() => {
 
           <div class="version-info">
             <div class="version-row">
-              <div class="version">版本号：V{{ appVersion }}</div>
-              <el-button
-                text
-                type="primary"
-                size="small"
-                :loading="checkingUpdate"
-                @click="handleCheckUpdate"
-              >
-                检查更新
-              </el-button>
+              <div class="version">
+                <span class="version-number-label">版本号：V{{ appVersion }}</span>
+                <span
+                  v-if="newVersionBadgeVisible"
+                  role="button"
+                  tabindex="0"
+                  class="version-update-badge version-update-badge-red version-update-badge-clickable"
+                  :title="`可升级至 ${newVersionCandidateText}，点击执行升级`"
+                  :aria-busy="checkingUpdate"
+                  @click="handleUpgradeBadgeClick"
+                  @keydown.enter.prevent="handleUpgradeBadgeClick"
+                  @keydown.space.prevent="handleUpgradeBadgeClick"
+                >
+                  <el-icon class="version-update-icon">
+                    <WarningFilled />
+                  </el-icon>
+                  <span class="version-update-text">有新版本</span>
+                </span>
+              </div>
             </div>
             <div class="copyright">© 2023 紫云科技 版权所有</div>
           </div>
@@ -717,23 +886,23 @@ onUnmounted(() => {
       </div>
     </div>
 
-      <el-dialog
-        v-model="aptSetupDialogVisible"
-        title="正在配置更新源"
-        width="440px"
-        class="apt-setup-dialog"
-        :close-on-click-modal="false"
-        :close-on-press-escape="aptSetupFinished"
-        :show-close="aptSetupFinished"
-      >
-        <el-progress
-          :percentage="aptSetupPercent"
-          :status="aptSetupProgressStatus"
-          :stroke-width="16"
-        />
-        <p class="apt-setup-hint">{{ aptSetupHint }}</p>
-      </el-dialog>
-    </div>
+    <el-dialog
+      v-model="aptSetupDialogVisible"
+      title="正在配置更新源"
+      width="440px"
+      class="apt-setup-dialog"
+      :close-on-click-modal="false"
+      :close-on-press-escape="aptSetupFinished"
+      :show-close="aptSetupFinished"
+    >
+      <el-progress
+        :percentage="aptSetupPercent"
+        :status="aptSetupProgressStatus"
+        :stroke-width="16"
+      />
+      <p class="apt-setup-hint">{{ aptSetupHint }}</p>
+    </el-dialog>
+  </div>
 </template>
 
 <style lang="scss" scoped>
@@ -912,6 +1081,7 @@ onUnmounted(() => {
   display: flex;
   align-items: center;
   justify-content: center;
+  flex-wrap: wrap;
   gap: 6px;
 }
 
@@ -919,6 +1089,52 @@ onUnmounted(() => {
   margin-bottom: 0;
 }
 
+.version-number-label {
+  color: inherit;
+}
+
+.version-update-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 3px;
+  margin-left: 6px;
+  vertical-align: middle;
+}
+
+.version-update-badge-red {
+  color: #f56c6c;
+}
+
+.version-update-badge-clickable {
+  cursor: pointer;
+  border-radius: 4px;
+  padding: 2px 4px;
+
+  &:hover {
+    background: rgba(245, 108, 108, 0.12);
+  }
+
+  &:focus-visible {
+    outline: 2px solid rgba(245, 108, 108, 0.55);
+    outline-offset: 2px;
+  }
+
+  &[aria-busy="true"] {
+    cursor: wait;
+    pointer-events: none;
+  }
+}
+
+.version-update-icon {
+  font-size: 15px;
+}
+
+.version-update-text {
+  font-size: 12px;
+  font-weight: 600;
+  letter-spacing: 0.02em;
+}
+
 .copyright {
   margin-top: 5px;
 }