feat(desktop-client): expand publisher error normalization

新增登录态失效与微信公众号外链缺失两类发布错误归一化，
将原本散落在适配器里的中文提示集中到 shared/publisher-errors，
让渲染层与 main 进程共用同一份用户可读文案。

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

apps/desktop-client/src/shared/publisher-errors.test.ts

@@ -1,14 +1,18 @@
 import { describe, expect, it } from "vitest";
 
 import {
+  PUBLISH_ACCOUNT_NOT_LOGGED_IN_MESSAGE,
   QIEHAO_REAL_NAME_AUTH_MESSAGE,
   WANGYIHAO_DRAFT_SAVE_PARAMETER_MESSAGE,
   WANGYIHAO_PUBLISH_CLICK_MESSAGE,
   WANGYIHAO_TOKEN_MISSING_MESSAGE,
+  WEIXIN_GZH_PUBLIC_URL_MISSING_MESSAGE,
   isQiehaoRealNameAuthError,
   normalizePublisherErrorMessage,
+  normalizePublisherLoginErrorMessage,
   normalizeQiehaoPublishErrorMessage,
   normalizeWangyihaoPublishErrorMessage,
+  normalizeWeixinGzhPublishErrorMessage,
 } from "./publisher-errors";
 
 describe("publisher error normalization", () => {
@@ -23,6 +27,24 @@ describe("publisher error normalization", () => {
     expect(normalizeQiehaoPublishErrorMessage("publish rejected", -5022)).toBe(QIEHAO_REAL_NAME_AUTH_MESSAGE);
   });
 
+  it("normalizes publisher login-state failures", () => {
+    expect(normalizePublisherErrorMessage("wangyihao_not_logged_in")).toBe(
+      "网易号账号登录态已失效，请重新登录该平台后再重试。",
+    );
+    expect(normalizePublisherErrorMessage("Error: weixin_gzh_not_logged_in")).toBe(
+      "微信公众号账号登录态已失效，请重新登录该平台后再重试。",
+    );
+    expect(normalizePublisherErrorMessage("qiehao_cookie_missing")).toBe(
+      "企鹅号账号登录态已失效，请重新登录该平台后再重试。",
+    );
+  });
+
+  it("uses a generic Chinese message for unknown publisher login-state failures", () => {
+    expect(normalizePublisherLoginErrorMessage("unknown_platform_not_logged_in")).toBe(
+      PUBLISH_ACCOUNT_NOT_LOGGED_IN_MESSAGE,
+    );
+  });
+
   it("normalizes Wangyihao token missing failures", () => {
     expect(normalizePublisherErrorMessage("wangyihao_token_missing")).toBe(WANGYIHAO_TOKEN_MISSING_MESSAGE);
     expect(normalizeWangyihaoPublishErrorMessage("Error: wangyihao_token_missing")).toBe(
@@ -48,6 +70,15 @@ describe("publisher error normalization", () => {
     );
   });
 
+  it("normalizes Weixin GZH missing public URL failures", () => {
+    expect(normalizePublisherErrorMessage("weixin_gzh_public_url_missing:100000093")).toBe(
+      WEIXIN_GZH_PUBLIC_URL_MISSING_MESSAGE,
+    );
+    expect(normalizeWeixinGzhPublishErrorMessage("Error: weixin_gzh_public_url_missing")).toBe(
+      WEIXIN_GZH_PUBLIC_URL_MISSING_MESSAGE,
+    );
+  });
+
   it("leaves unknown publisher errors unchanged", () => {
     expect(normalizePublisherErrorMessage("qiehao_publish_failed")).toBe("qiehao_publish_failed");
   });