refactor: remove the deprecated auth options

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

packages/auth/test/plugin.test.ts

@@ -3,7 +3,6 @@ import { createPluginRunner } from "@wrnexus/plugin";
 import { authPlugin } from "../src/plugin.ts";
 import { AUTH_ROUTE_DEFINITIONS } from "../src/routes/definitions.ts";
 import { readFileSync } from "node:fs";
-import { getDefaultAuthRouteOptions } from "../src/runtime.ts";
 
 test("plugin contributes components, runtime, styles, migration, and toolbar", async () => {
   const metadata = new Map<string, unknown>();
@@ -70,28 +69,6 @@ test("config.auth controls route groups and migrations without explicit plugin o
   expect(contributions.routes.some((route) => route.path === "/api/auth/login")).toBe(true);
 });
 
-test("config.auth resolves navigation hooks from the configured engine", async () => {
-  const onSignedIn = () => new Response(null, { status: 204 });
-  const onSignedOut = () => new Response(null, { status: 204 });
-  const runner = createPluginRunner(authPlugin(), {
-    root: process.cwd(),
-    mode: "development",
-    command: "dev",
-    metadata: new Map(),
-    warn() {},
-  });
-
-  await runner.configure({
-    auth: {
-      engine: { onSignedIn, onSignedOut } as never,
-      routes: true,
-    },
-  });
-
-  expect(getDefaultAuthRouteOptions().onSignedIn).toBe(onSignedIn);
-  expect(getDefaultAuthRouteOptions().onSignedOut).toBe(onSignedOut);
-});
-
 test("auth runtime contains built-in browser schemas", async () => {
   const metadata = new Map<string, unknown>();
   const runner = createPluginRunner(authPlugin({ includeMigrations: false }), {