优化 pwa 文案

components/pwa-controls.tsx

@@ -73,6 +73,13 @@ export function PwaControls() {
   const [notificationState, setNotificationState] =
     useState<NotificationState>("checking");
   const [notice, setNotice] = useState<string | null>(null);
+  const isInstalled = hasInstalledHint || isStandalone;
+  const notificationLabel =
+    notificationState === "enabled"
+      ? "消息提醒已开启"
+      : notificationState === "blocked"
+        ? "通知权限已被拒绝"
+        : "消息提醒未开启";
 
   useEffect(() => {
     let active = true;
@@ -309,48 +316,56 @@ export function PwaControls() {
   return (
     <section className="rounded-[28px] border border-white/80 bg-white/88 p-5 shadow-[0_22px_55px_rgba(53,84,141,0.12)]">
       <p className="text-sm font-medium tracking-[0.18em] text-[var(--copper)] uppercase">
-        快捷设置
+        {isInstalled ? "桌面版" : "快捷设置"}
       </p>
       <h2 className="mt-2 font-[family-name:var(--font-display)] text-2xl text-[var(--ink)]">
-        安装到桌面，随时收到长辈的消息
+        {isInstalled
+          ? isStandalone
+            ? "已从桌面版打开"
+            : "这台设备已添加到主屏幕"
+          : "安装到桌面，随时收到长辈的消息"}
       </h2>
       <p className="mt-3 text-sm leading-7 text-[var(--muted)]">
-        安装后打开更快，开启提醒后，长辈每次留言都能立刻收到通知。
+        {isInstalled
+          ? notificationState === "enabled"
+            ? "新留言会直接推送到这台设备。"
+            : "如需新留言提醒，可在下方开启通知。"
+          : "安装后打开更快，开启提醒后，长辈每次留言都能立刻收到通知。"}
       </p>
 
       <div className="mt-4 flex flex-wrap gap-3 text-sm text-[var(--muted)]">
+        {isInstalled ? (
+          <span className="rounded-full border border-[var(--line)] bg-[var(--paper-soft)] px-4 py-2">
+            {isStandalone ? "桌面版运行中" : "已添加到主屏幕"}
+          </span>
+        ) : (
+          <>
+            <span className="rounded-full border border-[var(--line)] bg-[var(--paper-soft)] px-4 py-2">
+              {isStandalone ? "当前正以桌面应用方式运行" : "当前正以浏览器方式运行"}
+            </span>
+            <span className="rounded-full border border-[var(--line)] bg-[var(--paper-soft)] px-4 py-2">
+              {hasInstalledHint ? "这台设备已有主屏幕安装记录" : "暂未检测到主屏幕安装记录"}
+            </span>
+          </>
+        )}
         <span className="rounded-full border border-[var(--line)] bg-[var(--paper-soft)] px-4 py-2">
-          {isStandalone ? "当前正以桌面应用方式运行" : "当前正以浏览器方式运行"}
-        </span>
-        <span className="rounded-full border border-[var(--line)] bg-[var(--paper-soft)] px-4 py-2">
-          {hasInstalledHint ? "这台设备已有主屏幕安装记录" : "暂未检测到主屏幕安装记录"}
-        </span>
-        <span className="rounded-full border border-[var(--line)] bg-[var(--paper-soft)] px-4 py-2">
-          {notificationState === "enabled"
-            ? "消息提醒已开启"
-            : notificationState === "blocked"
-              ? "通知权限已被拒绝"
-              : "消息提醒未开启"}
+          {notificationLabel}
         </span>
       </div>
 
       <div className="mt-5 flex flex-wrap gap-3">
-        <button
-          type="button"
-          onClick={() => {
-            void installApp();
-          }}
-          disabled={installing || isStandalone}
-          className="inline-flex h-12 items-center justify-center rounded-full bg-[var(--ink)] px-5 text-sm font-semibold text-white transition hover:bg-[var(--ink-soft)] disabled:cursor-not-allowed disabled:opacity-60"
-        >
-          {isStandalone
-            ? "已从桌面版打开"
-            : installing
-              ? "正在呼起安装"
-              : hasInstalledHint
-                ? "查看安装说明"
-                : "安装到桌面"}
-        </button>
+        {!isInstalled ? (
+          <button
+            type="button"
+            onClick={() => {
+              void installApp();
+            }}
+            disabled={installing || isStandalone}
+            className="inline-flex h-12 items-center justify-center rounded-full bg-[var(--ink)] px-5 text-sm font-semibold text-white transition hover:bg-[var(--ink-soft)] disabled:cursor-not-allowed disabled:opacity-60"
+          >
+            {installing ? "正在呼起安装" : "安装到桌面"}
+          </button>
+        ) : null}
 
         {notificationState === "enabled" ? (
           <button