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/page-layout/hooks/usePageLayoutTabCreate.ts

@@ -0,0 +1,45 @@
+import { useRecoilCallback } from 'recoil';
+import { v4 as uuidv4 } from 'uuid';
+import { pageLayoutCurrentLayoutsState } from '../states/pageLayoutCurrentLayoutsState';
+import { pageLayoutDraftState } from '../states/pageLayoutDraftState';
+import { type PageLayoutTab } from '../states/savedPageLayoutsState';
+import { createEmptyTabLayout } from '../utils/createEmptyTabLayout';
+
+export const usePageLayoutTabCreate = () => {
+  const handleCreateTab = useRecoilCallback(
+    ({ snapshot, set }) =>
+      (title?: string): string => {
+        const pageLayoutDraft = snapshot
+          .getLoadable(pageLayoutDraftState)
+          .getValue();
+
+        const newTabId = `tab-${uuidv4()}`;
+        const newTab: PageLayoutTab = {
+          id: newTabId,
+          title: title || `Tab ${pageLayoutDraft.tabs.length + 1}`,
+          position: pageLayoutDraft.tabs.length,
+          pageLayoutId: '',
+          widgets: [],
+          createdAt: new Date().toISOString(),
+          updatedAt: new Date().toISOString(),
+          deletedAt: null,
+        };
+
+        const updatedTabs = [...pageLayoutDraft.tabs, newTab];
+
+        set(pageLayoutDraftState, (prev) => ({
+          ...prev,
+          tabs: updatedTabs,
+        }));
+
+        set(pageLayoutCurrentLayoutsState, (prev) =>
+          createEmptyTabLayout(prev, newTabId),
+        );
+
+        return newTabId;
+      },
+    [],
+  );
+
+  return { handleCreateTab };
+};