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/developers/components/SettingsDevelopersWebhookForm.tsx

@@ -6,6 +6,7 @@ import { SettingsPageContainer } from '@/settings/components/SettingsPageContain
 import { SettingsSkeletonLoader } from '@/settings/components/SettingsSkeletonLoader';
 import { type WebhookFormMode } from '@/settings/developers/constants/WebhookFormMode';
 import { useWebhookForm } from '@/settings/developers/hooks/useWebhookForm';
+import { SettingsPath } from '@/types/SettingsPath';
 import { Select } from '@/ui/input/components/Select';
 import { SettingsTextInput } from '@/ui/input/components/SettingsTextInput';
 import { TextArea } from '@/ui/input/components/TextArea';
@@ -15,9 +16,7 @@ import { SubMenuTopBarContainer } from '@/ui/layout/page/components/SubMenuTopBa
 import { useIsMobile } from '@/ui/utilities/responsive/hooks/useIsMobile';
 import styled from '@emotion/styled';
 import { Trans, useLingui } from '@lingui/react/macro';
-import { SettingsPath } from 'twenty-shared/types';
 import {
-  getSettingsPath,
   getUrlHostnameOrThrow,
   isDefined,
   isValidUrl,
@@ -33,6 +32,7 @@ import {
 import { Button, IconButton, type SelectOption } from 'twenty-ui/input';
 import { Section } from 'twenty-ui/layout';
 import { useNavigateSettings } from '~/hooks/useNavigateSettings';
+import { getSettingsPath } from '~/utils/navigation/getSettingsPath';
 
 const OBJECT_DROPDOWN_WIDTH = 340;
 const ACTION_DROPDOWN_WIDTH = 140;