[#325] Corrections diverses (!26)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|         #325         |       Corrections diverses          |

## Description de la PR

## Modification du .env

## Check list

- [x] Pas de régression
- [ ] TU/TI/TF rédigée
- [x] TU/TI/TF OK
- [x] CHANGELOG modifié

Reviewed-on: #26
Reviewed-by: Autin <tristan@yuno.malio.fr>
Co-authored-by: kevin <kevin@yuno.malio.fr>
Co-committed-by: kevin <kevin@yuno.malio.fr>

src/State/UserPasswordProcessor.php

@@ -21,8 +21,12 @@ final class UserPasswordProcessor implements ProcessorInterface
     public function process(mixed $data, Operation $operation, array $uriVariables = [], array $context = []): mixed
     {
         if ($data instanceof User) {
-            $plain = $data->getPassword();
-            if ('' !== $plain) {
+            $plain    = $data->getPassword();
+            $previous = $context['previous_data'] ?? null;
+            if ($previous instanceof User && $plain === $previous->getPassword()) {
+                // Password not changed in payload: keep existing hash.
+                $data->setPassword($previous->getPassword());
+            } elseif ('' !== $plain) {
                 $data->setPassword($this->hasher->hashPassword(
                     $data,
                     $plain