feat(desktop-client/wangyihao): harden token capture and draft submit flow

Inject the YiDun guardian client to obtain ursToken without relying on
window.neg, fetch the publish detail (wemediaId/onlineState/...) before
saving drafts so 100002 "参数错误" stops blocking submit, downgrade
markdown tables to paragraph rows like Baijiahao, and surface friendlier
errors for token, draft and publish-click failures.

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

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

@@ -2,9 +2,13 @@ import { describe, expect, it } from "vitest";
 
 import {
   QIEHAO_REAL_NAME_AUTH_MESSAGE,
+  WANGYIHAO_DRAFT_SAVE_PARAMETER_MESSAGE,
+  WANGYIHAO_PUBLISH_CLICK_MESSAGE,
+  WANGYIHAO_TOKEN_MISSING_MESSAGE,
   isQiehaoRealNameAuthError,
   normalizePublisherErrorMessage,
   normalizeQiehaoPublishErrorMessage,
+  normalizeWangyihaoPublishErrorMessage,
 } from "./publisher-errors";
 
 describe("publisher error normalization", () => {
@@ -19,6 +23,31 @@ describe("publisher error normalization", () => {
     expect(normalizeQiehaoPublishErrorMessage("publish rejected", -5022)).toBe(QIEHAO_REAL_NAME_AUTH_MESSAGE);
   });
 
+  it("normalizes Wangyihao token missing failures", () => {
+    expect(normalizePublisherErrorMessage("wangyihao_token_missing")).toBe(WANGYIHAO_TOKEN_MISSING_MESSAGE);
+    expect(normalizeWangyihaoPublishErrorMessage("Error: wangyihao_token_missing")).toBe(
+      WANGYIHAO_TOKEN_MISSING_MESSAGE,
+    );
+  });
+
+  it("normalizes Wangyihao draft parameter failures", () => {
+    expect(normalizePublisherErrorMessage("wangyihao_draft_save_failed:wangyihao_error_100002")).toBe(
+      WANGYIHAO_DRAFT_SAVE_PARAMETER_MESSAGE,
+    );
+    expect(normalizeWangyihaoPublishErrorMessage("wangyihao_draft_save_failed:参数错误")).toBe(
+      WANGYIHAO_DRAFT_SAVE_PARAMETER_MESSAGE,
+    );
+  });
+
+  it("normalizes Wangyihao publish click failures", () => {
+    expect(normalizePublisherErrorMessage("wangyihao_publish_click_failed")).toBe(
+      WANGYIHAO_PUBLISH_CLICK_MESSAGE,
+    );
+    expect(normalizeWangyihaoPublishErrorMessage("wangyihao_publish_click_failed:未找到发布按钮")).toBe(
+      WANGYIHAO_PUBLISH_CLICK_MESSAGE,
+    );
+  });
+
   it("leaves unknown publisher errors unchanged", () => {
     expect(normalizePublisherErrorMessage("qiehao_publish_failed")).toBe("qiehao_publish_failed");
   });