feat: 完成P13治理收尾并创建P14执行合同（Issue: P13-1,P13-2,P13-3,P13-4,P13-5,P13-6,P13-7,P13-8,P14-0）

server/tests/unit/verification.provider.test.js

@@ -0,0 +1,12 @@
+const { getProvider } = require("../../src/services/verification");
+
+describe("getProvider", () => {
+  it("uses mock as default provider", () => {
+    expect(getProvider({})).toBe("mock");
+  });
+
+  it("normalizes case and whitespace", () => {
+    expect(getProvider({ verificationProvider: " TAX " })).toBe("tax");
+    expect(getProvider({ verificationProvider: "MoCk" })).toBe("mock");
+  });
+});