feat: Implémentation authentification NIST SP 800-63B v3.0.8

- Ajout du service PasswordSecurityService conforme NIST SP 800-63B
- Vérification des mots de passe contre la base Have I Been Pwned
- Validation : minimum 8 caractères, maximum 64 caractères
- Pas d'exigences de composition obligatoires (conforme NIST)
- Intégration dans LoginController et UserController
- Génération de mots de passe sécurisés non compromis

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/lib/presentation/widgets/custom_text_field.dart

@@ -6,6 +6,7 @@ class CustomTextField extends StatelessWidget {
   final String label;
   final String? hintText;
   final String? helperText;
+  final int? helperMaxLines;
   final IconData? prefixIcon;
   final Widget? suffixIcon;
   final bool readOnly;
@@ -33,6 +34,7 @@ class CustomTextField extends StatelessWidget {
     required this.label,
     this.hintText,
     this.helperText,
+    this.helperMaxLines,
     this.prefixIcon,
     this.suffixIcon,
     this.readOnly = false,
@@ -79,6 +81,7 @@ class CustomTextField extends StatelessWidget {
           labelText: isRequired ? "$label *" : label,
           hintText: hintText,
           helperText: helperText,
+          helperMaxLines: helperMaxLines,
           prefixIcon: prefixIcon != null ? Icon(prefixIcon) : null,
           suffixIcon: suffixIcon,
           border: const OutlineInputBorder(),
@@ -150,6 +153,7 @@ class CustomTextField extends StatelessWidget {
           decoration: InputDecoration(
             hintText: hintText,
             helperText: helperText,
+            helperMaxLines: helperMaxLines,
             prefixIcon: prefixIcon != null ? Icon(prefixIcon) : null,
             suffixIcon: suffixIcon,
             border: OutlineInputBorder(