Refactor password validation regex for consistency across application

- Updated password validation regex in ChangePasswordCommandValidator, RegisterCommandValidator, RegisterForm, and ChangePasswordForm to use Unicode property escapes for uppercase letters, ensuring consistent validation rules across both backend and frontend components.

backend/src/PnvPanel.Application/Auth/ChangePassword/ChangePasswordCommandValidator.cs

@@ -10,7 +10,7 @@ public sealed class ChangePasswordCommandValidator : AbstractValidator<ChangePas
         RuleFor(x => x.NewPassword)
             .NotEmpty()
             .MinimumLength(8)
-            .Matches("^(?=.*[A-Z])(?=.*[0-9]).+$")
+            .Matches(@"^(?=.*\p{Lu})(?=.*\d).+$")
             .WithMessage("Пароль должен содержать минимум одну заглавную букву и одну цифру.");
     }
 }

backend/src/PnvPanel.Application/Auth/Register/RegisterCommandValidator.cs

@@ -15,7 +15,7 @@ public sealed class RegisterCommandValidator : AbstractValidator<RegisterCommand
         RuleFor(x => x.Password)
             .NotEmpty()
             .MinimumLength(8)
-            .Matches("^(?=.*[A-Z])(?=.*[0-9]).+$")
+            .Matches(@"^(?=.*\p{Lu})(?=.*\d).+$")
             .WithMessage("Пароль должен содержать минимум одну заглавную букву и одну цифру.");
     }
 }

frontend/src/features/auth/RegisterForm.tsx

@@ -18,7 +18,7 @@ const schema = z.object({
   password: z
     .string()
     .min(8)
-    .regex(/^(?=.*[A-Z])(?=.*[0-9]).+$/),
+    .regex(/^(?=.*\p{Lu})(?=.*\d).+$/u),
 })
 
 type FormValues = z.infer<typeof schema>

frontend/src/features/settings/ChangePasswordForm.tsx

@@ -15,7 +15,7 @@ const schema = z.object({
   newPassword: z
     .string()
     .min(8)
-    .regex(/^(?=.*[A-Z])(?=.*[0-9]).+$/),
+    .regex(/^(?=.*\p{Lu})(?=.*\d).+$/u),
 })
 
 type FormValues = z.infer<typeof schema>