Prevent csv export injections (#14347)

**Small Security Issue:** CSV exports were vulnerable to formula
injection attacks when users entered values starting with =, +, -, or @.
(only happens if a logged-in user injects corrupted data)

Solution:
- Added ZWJ (Zero-Width Joiner) protection that prefixes dangerous
values with invisible Unicode character
- This is the best way to preserve original data while preventing Excel
from executing formulas
- Added import cleanup to restore original values when re-importing
 
Changes:
- New sanitizeValueForCSVExport() function for security
- Updated all CSV export paths to use both security + formatting
functions
- Added comprehensive tests covering attack vectors and international
characters
- Also added cursor rules for better code consistency

---------

Co-authored-by: Charles Bochet <charlesBochet@users.noreply.github.com>

packages/twenty-front/src/modules/auth/hooks/__tests__/useVerifyLogin.test.ts

@@ -3,8 +3,8 @@ import { I18nProvider } from '@lingui/react';
 import { renderHook } from '@testing-library/react';
 import { RecoilRoot } from 'recoil';
 
+import { AppPath } from '@/types/AppPath';
 import { useSnackBar } from '@/ui/feedback/snack-bar-manager/hooks/useSnackBar';
-import { AppPath } from 'twenty-shared/types';
 import { useNavigateApp } from '~/hooks/useNavigateApp';
 import { useAuth } from '../useAuth';
 import { useVerifyLogin } from '../useVerifyLogin';

packages/twenty-front/src/modules/auth/hooks/useAuth.ts

@@ -1,3 +1,4 @@
+import { AppPath } from '@/types/AppPath';
 import { ApolloError, useApolloClient } from '@apollo/client';
 import { useCallback } from 'react';
 import {
@@ -7,7 +8,6 @@ import {
   useRecoilValue,
   useSetRecoilState,
 } from 'recoil';
-import { AppPath } from 'twenty-shared/types';
 
 import { billingState } from '@/client-config/states/billingState';
 import { clientConfigApiStatusState } from '@/client-config/states/clientConfigApiStatusState';

packages/twenty-front/src/modules/auth/hooks/useVerifyLogin.ts

@@ -1,7 +1,7 @@
 import { useAuth } from '@/auth/hooks/useAuth';
+import { AppPath } from '@/types/AppPath';
 import { useSnackBar } from '@/ui/feedback/snack-bar-manager/hooks/useSnackBar';
 import { useLingui } from '@lingui/react/macro';
-import { AppPath } from 'twenty-shared/types';
 import { useNavigateApp } from '~/hooks/useNavigateApp';
 
 export const useVerifyLogin = () => {