Replace z.any() with z.custom<T>() for WebAuthn types

Use proper TypeScript types from @simplewebauthn/types instead of
z.any() for WebAuthn-related schemas:
- PublicKeyCredentialCreationOptionsJSON
- PublicKeyCredentialRequestOptionsJSON
- RegistrationResponseJSON
- AuthenticationResponseJSON

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/api-contract/src/contract.ts

@@ -1,3 +1,9 @@
+import type {
+  AuthenticationResponseJSON,
+  PublicKeyCredentialCreationOptionsJSON,
+  PublicKeyCredentialRequestOptionsJSON,
+  RegistrationResponseJSON,
+} from "@simplewebauthn/types";
 import { oc } from "@orpc/contract";
 import * as z from "zod";
 import {
@@ -72,28 +78,28 @@ export const contract = oc.router({
         .output(
           z.object({
             challengeId: z.number(),
-            options: z.any(), // PublicKeyCredentialCreationOptionsJSON
+            options: z.custom<PublicKeyCredentialCreationOptionsJSON>(),
           }),
         ),
       verifyRegistration: oc
         .input(
           z.object({
             challengeId: z.number(),
-            response: z.any(), // RegistrationResponseJSON
+            response: z.custom<RegistrationResponseJSON>(),
           }),
         )
         .output(z.void()),
       createAuthenticationOptions: oc.output(
         z.object({
           challengeId: z.number(),
-          options: z.any(), // PublicKeyCredentialRequestOptionsJSON
+          options: z.custom<PublicKeyCredentialRequestOptionsJSON>(),
         }),
       ),
       verifyAuthentication: oc
         .input(
           z.object({
             challengeId: z.number(),
-            response: z.any(), // AuthenticationResponseJSON
+            response: z.custom<AuthenticationResponseJSON>(),
           }),
         )
         .output(z.void()),
@@ -113,7 +119,7 @@ export const contract = oc.router({
     createPasskey: oc.input(z.object({ name: z.string() })).output(
       z.object({
         challengeId: z.number(),
-        options: z.any(), // PublicKeyCredentialCreationOptionsJSON
+        options: z.custom<PublicKeyCredentialCreationOptionsJSON>(),
       }),
     ),
     renamePasskey: oc