feat: add captcha support for sign in/up (#4582)

apps/electron/src/main/ui/challenge.ts

@@ -0,0 +1,7 @@
+import { mintChallengeResponse } from '@affine/native';
+
+export const getChallengeResponse = async (resource: string) => {
+  // 20 bits challenge is a balance between security and user experience
+  // 20 bits challenge cost time is about 1-3s on m2 macbook air
+  return mintChallengeResponse(resource, 20);
+};

apps/electron/src/main/ui/handlers.ts

@@ -4,6 +4,7 @@ import { getLinkPreview } from 'link-preview-js';
 import { isMacOS } from '../../shared/utils';
 import { logger } from '../logger';
 import type { NamespaceHandlers } from '../type';
+import { getChallengeResponse } from './challenge';
 import { getGoogleOauthCode } from './google-auth';
 
 export const uiHandlers = {
@@ -45,6 +46,9 @@ export const uiHandlers = {
   getGoogleOauthCode: async () => {
     return getGoogleOauthCode();
   },
+  getChallengeResponse: async (_, challenge: string) => {
+    return getChallengeResponse(challenge);
+  },
   getBookmarkDataByLink: async (_, link: string) => {
     if (
       (link.startsWith('https://x.com/') ||