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/components/VerifyLoginTokenEffect.tsx

@@ -4,8 +4,8 @@ import { useSearchParams } from 'react-router-dom';
 import { useIsLogged } from '@/auth/hooks/useIsLogged';
 import { useVerifyLogin } from '@/auth/hooks/useVerifyLogin';
 import { clientConfigApiStatusState } from '@/client-config/states/clientConfigApiStatusState';
+import { AppPath } from '@/types/AppPath';
 import { useRecoilValue } from 'recoil';
-import { AppPath } from 'twenty-shared/types';
 import { isDefined } from 'twenty-shared/utils';
 import { useNavigateApp } from '~/hooks/useNavigateApp';