feat(roles): add role form page for create/edit

- Unified form for both create and edit operations
- Form validation with Yup schema
- Auto-populate fields in edit mode
- Proper navigation and loading states
- Persian validation messages

src/pages/roles/role-form/RoleFormPage.tsx

@@ -0,0 +1,149 @@
+import { useEffect } from "react";
+import { useNavigate, useParams } from "react-router-dom";
+import { useForm } from "react-hook-form";
+import { yupResolver } from "@hookform/resolvers/yup";
+import * as yup from "yup";
+import { useRole, useCreateRole, useUpdateRole } from "../core/_hooks";
+import { Button } from "@/components/ui/Button";
+import { Input } from "@/components/ui/Input";
+import { LoadingSpinner } from "@/components/ui/LoadingSpinner";
+import { RoleFormData } from "../core/_models";
+import { ArrowRight } from "lucide-react";
+
+const roleSchema = yup.object({
+    title: yup
+        .string()
+        .required("نام نقش الزامی است")
+        .min(2, "نام نقش باید حداقل ۲ کاراکتر باشد"),
+    description: yup
+        .string()
+        .required("توضیحات الزامی است")
+        .min(5, "توضیحات باید حداقل ۵ کاراکتر باشد"),
+});
+
+const RoleFormPage = () => {
+    const navigate = useNavigate();
+    const { id } = useParams();
+    const isEdit = !!id;
+
+    const { data: role, isLoading: roleLoading } = useRole(id || "");
+    const { mutate: createRole, isPending: creating } = useCreateRole();
+    const { mutate: updateRole, isPending: updating } = useUpdateRole();
+
+    const {
+        register,
+        handleSubmit,
+        formState: { errors, isValid },
+        reset,
+    } = useForm<RoleFormData>({
+        resolver: yupResolver(roleSchema),
+        mode: 'onChange',
+    });
+
+    useEffect(() => {
+        if (isEdit && role) {
+            reset({
+                title: role.title,
+                description: role.description,
+            });
+        }
+    }, [isEdit, role, reset]);
+
+    const onSubmit = (data: RoleFormData) => {
+        if (isEdit && id) {
+            updateRole({
+                id: parseInt(id),
+                ...data,
+            }, {
+                onSuccess: () => {
+                    navigate('/roles');
+                }
+            });
+        } else {
+            createRole(data, {
+                onSuccess: () => {
+                    navigate('/roles');
+                }
+            });
+        }
+    };
+
+    if (isEdit && roleLoading) {
+        return <LoadingSpinner />;
+    }
+
+    const isLoading = creating || updating;
+
+    return (
+        <div className="p-6">
+            <div className="mb-6">
+                <div className="flex items-center gap-4 mb-4">
+                    <Button
+                        variant="secondary"
+                        onClick={() => navigate('/roles')}
+                        className="flex items-center gap-2"
+                    >
+                        <ArrowRight className="h-4 w-4" />
+                        بازگشت
+                    </Button>
+                    <h1 className="text-2xl font-bold text-gray-900 dark:text-gray-100">
+                        {isEdit ? 'ویرایش نقش' : 'ایجاد نقش جدید'}
+                    </h1>
+                </div>
+            </div>
+
+            <div className="max-w-2xl">
+                <div className="bg-white dark:bg-gray-800 rounded-lg shadow-md p-6">
+                    <form onSubmit={handleSubmit(onSubmit)} className="space-y-6">
+                        <Input
+                            label="نام نقش"
+                            type="text"
+                            placeholder="نام نقش را وارد کنید"
+                            error={errors.title?.message}
+                            {...register('title')}
+                        />
+
+                        <div className="space-y-1">
+                            <label className="block text-sm font-medium text-gray-700 dark:text-gray-300">
+                                توضیحات
+                            </label>
+                            <textarea
+                                placeholder="توضیحات نقش را وارد کنید"
+                                className={`w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-primary-500 resize-none h-24 ${errors.description
+                                        ? 'border-red-500 focus:ring-red-500 focus:border-red-500'
+                                        : 'border-gray-300 dark:border-gray-600'
+                                    } dark:bg-gray-700 dark:text-gray-100`}
+                                {...register('description')}
+                            />
+                            {errors.description && (
+                                <p className="text-sm text-red-600 dark:text-red-400">
+                                    {errors.description.message}
+                                </p>
+                            )}
+                        </div>
+
+                        <div className="flex justify-end gap-3 pt-4">
+                            <Button
+                                type="button"
+                                variant="secondary"
+                                onClick={() => navigate('/roles')}
+                            >
+                                انصراف
+                            </Button>
+                            <Button
+                                type="submit"
+                                variant="primary"
+                                loading={isLoading}
+                                disabled={!isValid}
+                            >
+                                {isEdit ? 'به‌روزرسانی' : 'ایجاد'}
+                            </Button>
+                        </div>
+                    </form>
+                </div>
+            </div>
+        </div>
+    );
+};
+
+export default RoleFormPage;