发布候选：整合桌面端界面与发布稳定化里程碑

frontend/src/views/Login.test.ts

@@ -95,4 +95,16 @@ describe("Login protocol agreement", () => {
     expect(source).toContain("width: clamp(480px, 34vw, 560px);");
     expect(source).toContain("max-width: calc(100vw - 40px);");
   });
+
+  it("uses only server-configured email domains on web and desktop", () => {
+    const source = readLoginView();
+
+    expect(source).toContain('fetchEmailDomains()');
+    expect(source).toContain(':disabled="availableEmailDomains.length === 0"');
+    expect(source).toContain("const availableEmailDomains = computed(() => configuredEmailDomains.value)");
+    expect(source).toContain("configuredEmailDomains.value.includes(domain)");
+    expect(source).not.toContain("preservedEmailDomain");
+    expect(source).not.toContain("showDomainSelect");
+    expect(source).not.toContain("email-domain-input");
+  });
 });