feat(desktop-client): validate qiehao session via detected account

The 企鹅号 console returns 200 even when the session is silently expired,
so probe/silent-refresh/console-open now require detect() to return an
account whose identity matches the bound one. Surface a localized
"授权已过期" prompt in the renderer when the new
desktop_account_session_expired error bubbles up.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop-client/src/renderer/lib/client-errors.ts

@@ -96,6 +96,16 @@ function presentClientError(kind: ClientActionKind, error: unknown): ClientError
     };
   }
 
+  if (message.startsWith("desktop_account_session_expired:")) {
+    const platformId = message.split(":")[1] || "当前平台";
+    const platformLabel = platformId === "qiehao" ? "企鹅号" : platformId;
+    return {
+      tone: "warning",
+      title: "授权已过期",
+      content: `${platformLabel} 登录态已失效，请重新授权后再打开工作台。`,
+    };
+  }
+
   if (message === "desktop_account_delete_failed") {
     return {
       tone: "error",