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/settings/accounts/hooks/__tests__/useTriggerProviderReconnect.test.tsx

@@ -2,7 +2,8 @@ import { act, renderHook } from '@testing-library/react';
 import { type ReactNode } from 'react';
 import { RecoilRoot } from 'recoil';
 
-import { ConnectedAccountProvider, SettingsPath } from 'twenty-shared/types';
+import { SettingsPath } from '@/types/SettingsPath';
+import { ConnectedAccountProvider } from 'twenty-shared/types';
 import {
   CalendarChannelVisibility,
   MessageChannelVisibility,

packages/twenty-front/src/modules/settings/accounts/hooks/useImapSmtpCaldavConnectionForm.ts

@@ -6,8 +6,8 @@ import { useRecoilValue } from 'recoil';
 import { currentWorkspaceMemberState } from '@/auth/states/currentWorkspaceMemberState';
 import { useSnackBar } from '@/ui/feedback/snack-bar-manager/hooks/useSnackBar';
 
+import { SettingsPath } from '@/types/SettingsPath';
 import { t } from '@lingui/core/macro';
-import { SettingsPath } from 'twenty-shared/types';
 import {
   type ConnectionParameters,
   useSaveImapSmtpCaldavAccountMutation,

packages/twenty-front/src/modules/settings/accounts/hooks/useTriggerApiOAuth.ts

@@ -1,8 +1,9 @@
+import { type AppPath } from '@/types/AppPath';
 import { useCallback } from 'react';
-import { type AppPath, ConnectedAccountProvider } from 'twenty-shared/types';
 
 import { useRedirect } from '@/domain-manager/hooks/useRedirect';
 import { CustomError } from '@/error-handler/CustomError';
+import { ConnectedAccountProvider } from 'twenty-shared/types';
 import { REACT_APP_SERVER_BASE_URL } from '~/config';
 import {
   type CalendarChannelVisibility,

packages/twenty-front/src/modules/settings/accounts/hooks/useTriggerProviderReconnect.ts

@@ -1,7 +1,8 @@
 import { useCallback } from 'react';
-import { ConnectedAccountProvider, SettingsPath } from 'twenty-shared/types';
+import { ConnectedAccountProvider } from 'twenty-shared/types';
 
 import { useTriggerApisOAuth } from '@/settings/accounts/hooks/useTriggerApiOAuth';
+import { SettingsPath } from '@/types/SettingsPath';
 import { useNavigateSettings } from '~/hooks/useNavigateSettings';
 
 export const useTriggerProviderReconnect = () => {