Added a util helper to remove accent and case to improve search logic (#14533)

# [WIP] Make Local Search Non-Accent-Sensitive

fixes(#14468)

---

**Description:**  
This PR adds accent- and case-insensitive search for the
**SettingsWorkspaceMembers** component’s local search. It ensures that
searching for names or emails works correctly even if the user types
letters without accents.

**Implementation:**  
- Added a helper util: `removeAccentsAndCase(text: string)`  
- This util:
  - Normalizes text to NFD form
  - Removes diacritics (accents)
  - Converts text to lowercase
- Replaced current `.includes(searchFilter)` logic with a normalized
comparison:


---

### Video ->

[Screencast from 2025-09-16
16-42-50.webm](https://github.com/user-attachments/assets/7035906c-9c5d-414d-81e5-74e53803628a)


---

Opening a draft pr for initial strategy review before extending it to
other components.

---------

Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-front/src/utils/__tests__/normalizeSearchText.test.ts

@@ -0,0 +1,70 @@
+import { normalizeSearchText } from '../normalizeSearchText';
+
+describe('normalizeSearchText', () => {
+  it('should handle basic ASCII text', () => {
+    expect(normalizeSearchText('Hello World')).toBe('hello world');
+    expect(normalizeSearchText('TEST')).toBe('test');
+    expect(normalizeSearchText('MixedCase123')).toBe('mixedcase123');
+  });
+
+  it('should remove accents from various languages', () => {
+    expect(normalizeSearchText('café')).toBe('cafe');
+    expect(normalizeSearchText('naïve')).toBe('naive');
+    expect(normalizeSearchText('résumé')).toBe('resume');
+    expect(normalizeSearchText('Zürich')).toBe('zurich');
+    expect(normalizeSearchText('Müller')).toBe('muller');
+    expect(normalizeSearchText('niño')).toBe('nino');
+    expect(normalizeSearchText('España')).toBe('espana');
+    expect(normalizeSearchText('São Paulo')).toBe('sao paulo');
+    expect(normalizeSearchText('João')).toBe('joao');
+    expect(normalizeSearchText('Åse')).toBe('ase');
+    expect(normalizeSearchText('Øyvind')).toBe('oyvind');
+  });
+
+  it('should handle Nordic and Germanic special characters', () => {
+    expect(normalizeSearchText('Øyvind')).toBe('oyvind');
+    expect(normalizeSearchText('Åse')).toBe('ase');
+    expect(normalizeSearchText('Æther')).toBe('aether');
+    expect(normalizeSearchText('Straße')).toBe('strasse');
+    expect(normalizeSearchText('Łódź')).toBe('lodz');
+    expect(normalizeSearchText('Œuvre')).toBe('oeuvre');
+  });
+
+  it('should handle mixed case with accents', () => {
+    expect(normalizeSearchText('CAFÉ')).toBe('cafe');
+    expect(normalizeSearchText('NaÏvE')).toBe('naive');
+    expect(normalizeSearchText('ZÜRICH')).toBe('zurich');
+  });
+
+  it('should handle null and undefined gracefully', () => {
+    expect(normalizeSearchText(null)).toBe('');
+    expect(normalizeSearchText(undefined)).toBe('');
+  });
+
+  it('should handle empty strings', () => {
+    expect(normalizeSearchText('')).toBe('');
+    expect(normalizeSearchText('   ')).toBe('   ');
+  });
+
+  it('should handle special characters and numbers', () => {
+    expect(normalizeSearchText('user@example.com')).toBe('user@example.com');
+    expect(normalizeSearchText('123-456-7890')).toBe('123-456-7890');
+    expect(normalizeSearchText('Café #1')).toBe('cafe #1');
+  });
+
+  it('should handle complex Unicode combinations', () => {
+    expect(normalizeSearchText('e\u0301')).toBe('e');
+    expect(normalizeSearchText('a\u0300\u0301')).toBe('a');
+    expect(normalizeSearchText('é')).toBe('e');
+    expect(normalizeSearchText('e\u0301')).toBe('e');
+  });
+
+  it('should be consistent for search matching', () => {
+    const searchTerm = 'cafe';
+    const names = ['Café', 'CAFE', 'cafe', 'Cafe'];
+
+    names.forEach((name) => {
+      expect(normalizeSearchText(name)).toContain(searchTerm);
+    });
+  });
+});

packages/twenty-front/src/utils/normalizeSearchText.ts

@@ -0,0 +1,17 @@
+export const normalizeSearchText = (
+  text: string | null | undefined,
+): string => {
+  if (!text) return '';
+  return text
+    .normalize('NFD')
+    .replace(/\p{Diacritic}/gu, '')
+    .replace(/[øØ]/g, 'o')
+    .replace(/[åÅ]/g, 'a')
+    .replace(/[æÆ]/g, 'ae')
+    .replace(/[ßẞ]/g, 'ss')
+    .replace(/[ðÐ]/g, 'd')
+    .replace(/[þÞ]/g, 'th')
+    .replace(/[łŁ]/g, 'l')
+    .replace(/[œŒ]/g, 'oe')
+    .toLowerCase();
+};