feat(desktop): add Wenxin monitoring adapter and surface platform risk control

Introduces the Wenxin (文心一言) monitoring adapter and registers it in
the runtime controller and adapter index. Adds a new risk_control
failure classification with custom classifiers for Doubao and Wenxin
that recognize rate-limit, 频控 and 访问环境异常 signals, and propagates
this state through account-health, runtime activity alerts, and the
renderer views so users see "触发风控" instead of a generic challenge
message on the Home, Accounts, and AI Platforms screens.

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

apps/desktop-client/src/main/platform-auth-adapters.test.ts

@@ -0,0 +1,24 @@
+import { beforeAll, describe, expect, it, vi } from "vitest";
+
+vi.mock("./account-binder", () => ({
+  probePublishAccountSession: vi.fn(),
+  silentRefreshPublishAccountSession: vi.fn(),
+}));
+
+let getPlatformAdapter: typeof import("./platform-auth-adapters").getPlatformAdapter;
+
+beforeAll(async () => {
+  ({ getPlatformAdapter } = await import("./platform-auth-adapters"));
+});
+
+describe("platform auth adapters", () => {
+  it("classifies Wenxin environment abnormal messages as risk control", () => {
+    const adapter = getPlatformAdapter("wenxin");
+
+    expect(
+      adapter.classifyFailure({
+        message: "当前访问环境存在异常，请更换浏览器再尝试提问",
+      }),
+    ).toBe("risk_control");
+  });
+});