fixes on search (#11955)

In this PR
- enable search by email
- search with ' ' (spaces) string and special characters do not throw
entry error

closes https://github.com/twentyhq/twenty/issues/11447 &
https://github.com/twentyhq/core-team-issues/issues/860

packages/twenty-server/src/engine/core-modules/search/services/search.service.ts

@@ -1,5 +1,6 @@
 import { Injectable } from '@nestjs/common';
 
+import { isNonEmptyString } from '@sniptt/guards';
 import { FieldMetadataType } from 'twenty-shared/types';
 import { getLogoUrlFromDomainName } from 'twenty-shared/utils';
 import { Brackets, ObjectLiteral } from 'typeorm';
@@ -96,7 +97,7 @@ export class SearchService {
       ...(imageIdentifierField ? [imageIdentifierField] : []),
     ].map((field) => `"${field}"`);
 
-    const searchQuery = searchTerms
+    const searchQuery = isNonEmptyString(searchTerms)
       ? queryBuilder
           .select(fieldsToSelect)
           .addSelect(

packages/twenty-server/src/engine/core-modules/search/utils/format-search-terms.ts

@@ -2,12 +2,12 @@ export const formatSearchTerms = (
   searchTerm: string,
   operator: 'and' | 'or' = 'and',
 ) => {
-  if (searchTerm === '') {
+  if (searchTerm.trim() === '') {
     return '';
   }
   const words = searchTerm.trim().split(/\s+/);
   const formattedWords = words.map((word) => {
-    const escapedWord = word.replace(/[\\:'&|!()]/g, '\\$&');
+    const escapedWord = word.replace(/[\\:'&|!()@<>]/g, '\\$&');
 
     return `${escapedWord}:*`;
   });