fix(settings): restore wechat and payment config persistence

frontend/src/api/__tests__/settings.wechatConnect.spec.ts

@@ -0,0 +1,21 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  defaultWeChatConnectScopesForMode,
+  normalizeWeChatConnectMode,
+} from "@/api/admin/settings";
+
+describe("admin settings wechat connect helpers", () => {
+  it("normalizes legacy or noisy mode values to the backend contract", () => {
+    expect(normalizeWeChatConnectMode("OPEN")).toBe("open");
+    expect(normalizeWeChatConnectMode(" open_platform ")).toBe("open");
+    expect(normalizeWeChatConnectMode("mp")).toBe("mp");
+    expect(normalizeWeChatConnectMode("official_account")).toBe("mp");
+    expect(normalizeWeChatConnectMode("unknown")).toBe("open");
+  });
+
+  it("maps each mode to the backend default scopes", () => {
+    expect(defaultWeChatConnectScopesForMode("open")).toBe("snsapi_login");
+    expect(defaultWeChatConnectScopesForMode("mp")).toBe("snsapi_userinfo");
+  });
+});