sdyl405w4: Remove the sign-out feature and the Minnect revoke call

tests/session-refresh.test.ts

@@ -1,6 +1,5 @@
 import { describe, expect, it, vi } from "vitest";
 import {
-  endSession,
   ensureFreshSession,
   refreshSession,
 } from "@/lib/session-refresh";
@@ -113,27 +112,3 @@ describe("refreshSession failure", () => {
     expect(getSession(id)).toBeNull();
   });
 });
-
-describe("endSession", () => {
-  it("revokes the refresh token and deletes the session", async () => {
-    const id = seedSession(Date.now() + 60 * 60_000);
-    const fetchImpl = vi.fn(async (_input: RequestInfo | URL) => json({ data: { success: true } }));
-
-    await endSession(id, { fetchImpl: fetchImpl as unknown as typeof fetch });
-
-    expect(fetchImpl.mock.calls.some(([u]) => String(u).endsWith("/api/v4/auth/revoke-token"))).toBe(true);
-    expect(getSession(id)).toBeNull();
-  });
-
-  it("still deletes the session when revoke throws", async () => {
-    const id = seedSession(Date.now() + 60 * 60_000);
-    const fetchImpl = vi.fn(async (_input: RequestInfo | URL): Promise<Response> => {
-      throw new Error("revoke down");
-    });
-
-    await expect(
-      endSession(id, { fetchImpl: fetchImpl as unknown as typeof fetch }),
-    ).resolves.toBeUndefined();
-    expect(getSession(id)).toBeNull();
-  });
-});