refactor: remove the deprecated auth options

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

packages/auth/src/runtime.ts

@@ -1,4 +1,3 @@
-import type { Context } from "@wrnexus/core";
 import type { AuthEngine } from "./engine.ts";
 import type { AuthPasskeyHttpOptions } from "./http/index.ts";
 import type { AuthSessionVerificationHandler } from "./types.ts";
@@ -8,10 +7,6 @@ export interface DefaultAuthRouteOptions {
   baseUrl?: string;
   csrf?: boolean;
   passkey?: AuthPasskeyHttpOptions;
-
-  onSignedIn?: (ctx: Context, returnTo?: string) => Response | Promise<Response>;
-
-  onSignedOut?: (ctx: Context) => Response | Promise<Response>;
   sessionCookieName?: string;
   onSessionVerification?: AuthSessionVerificationHandler;
 }