feat(admin): implement symptoms management in admin panel product form

backend/src/admin/admin.service.ts

@@ -101,7 +101,7 @@ export class AdminService {
       const [data, total] = await Promise.all([
         this.prisma.product.findMany({ 
           where, skip, take: limit, orderBy: { createdAt: 'desc' },
-          include: { category: true }
+          include: { category: true, symptoms: true }
         }),
         this.prisma.product.count({ where })
       ]);
@@ -114,7 +114,7 @@ export class AdminService {
   }
 
   async createProduct(data: any) {
-    return this.prisma.product.create({
+    const product = await this.prisma.product.create({
       data: {
         artNo: data.artNo,
         nameFa: data.nameFa,
@@ -138,10 +138,21 @@ export class AdminService {
         slug: data.slug || data.artNo,
       }
     });
+
+    if (data.symptoms && Array.isArray(data.symptoms)) {
+      await this.prisma.productSymptom.createMany({
+        data: data.symptoms.map((s: string) => ({
+          productId: product.id,
+          symptom: s.trim()
+        })).filter((s: any) => s.symptom.length > 0)
+      });
+    }
+
+    return product;
   }
 
   async updateProduct(id: string, data: any) {
-    return this.prisma.product.update({
+    const product = await this.prisma.product.update({
       where: { id },
       data: {
         artNo: data.artNo,
@@ -166,6 +177,20 @@ export class AdminService {
         slug: data.slug || data.artNo,
       }
     });
+
+    if (data.symptoms !== undefined && Array.isArray(data.symptoms)) {
+      await this.prisma.productSymptom.deleteMany({ where: { productId: id } });
+      if (data.symptoms.length > 0) {
+        await this.prisma.productSymptom.createMany({
+          data: data.symptoms.map((s: string) => ({
+            productId: id,
+            symptom: s.trim()
+          })).filter((s: any) => s.symptom.length > 0)
+        });
+      }
+    }
+
+    return product;
   }
 
   async deleteProduct(id: string) {

frontend/admin-panel/src/pages/Products.tsx

@@ -43,7 +43,8 @@ export default function Products() {
     metaDescription: '',
     keywords: '',
     canonicalUrl: '',
-    slug: ''
+    slug: '',
+    symptoms: [] as string[]
   });
 
   const fetchData = async () => {
@@ -104,14 +105,16 @@ export default function Products() {
         metaDescription: product.metaDescription || '',
         keywords: product.keywords || '',
         canonicalUrl: product.canonicalUrl || '',
-        slug: product.slug || ''
+        slug: product.slug || '',
+        symptoms: product.symptoms ? product.symptoms.map((s: any) => s.symptom) : []
       });
     } else {
       setEditingProduct(null);
       setFormData({
         artNo: '', nameFa: '', nameEn: '', scientificTagline: '', description: '', shortDescription: '', categoryId: '',
         priceValue: 0, priceDisplay: '', unit: '', packageSize: 0, dosageLogic: '', suitableFor: 'سگ و گربه',
-        imageUrl: '', metaTitle: '', metaDescription: '', keywords: '', canonicalUrl: '', slug: ''
+        imageUrl: '', metaTitle: '', metaDescription: '', keywords: '', canonicalUrl: '', slug: '',
+        symptoms: []
       });
     }
     setActiveTab('general');
@@ -335,12 +338,52 @@ export default function Products() {
                       <label className="text-sm font-bold text-gray-700">توضیحات کامل</label>
                       <textarea rows={5} value={formData.description} onChange={(e) => setFormData({...formData, description: e.target.value})} className="w-full px-4 py-3 rounded-xl border border-gray-200 focus:border-purple-500 outline-none"></textarea>
                     </div>
-                    <div className="space-y-2 md:col-span-2">
-                      <label className="text-sm font-bold text-gray-700">منطق دوز مصرفی (Dosage Logic)</label>
-                      <textarea rows={2} value={formData.dosageLogic} onChange={(e) => setFormData({...formData, dosageLogic: e.target.value})} className="w-full px-4 py-3 rounded-xl border border-gray-200 focus:border-purple-500 outline-none"></textarea>
-                    </div>
-                  </div>
-                </div>
+                     <div className="space-y-2 md:col-span-2">
+                       <label className="text-sm font-bold text-gray-700">منطق دوز مصرفی (Dosage Logic)</label>
+                       <textarea rows={2} value={formData.dosageLogic} onChange={(e) => setFormData({...formData, dosageLogic: e.target.value})} className="w-full px-4 py-3 rounded-xl border border-gray-200 focus:border-purple-500 outline-none"></textarea>
+                     </div>
+                     <div className="space-y-2 md:col-span-2">
+                       <label className="text-sm font-bold text-gray-700">علائم درمانی مرتبط (Symptom Tags)</label>
+                       <div className="flex flex-wrap gap-2 p-3 bg-white border border-gray-200 rounded-xl min-h-[50px] items-center focus-within:border-purple-500 focus-within:ring-2 focus-within:ring-purple-200 transition-all">
+                         {formData.symptoms && formData.symptoms.map((symptom, idx) => (
+                           <span key={idx} className="inline-flex items-center gap-1.5 px-3 py-1 rounded-full text-xs font-bold bg-purple-50 border border-purple-200 text-purple-700">
+                             {symptom}
+                             <button
+                               type="button"
+                               onClick={() => {
+                                 const newSymptoms = formData.symptoms.filter((_, i) => i !== idx);
+                                 setFormData({ ...formData, symptoms: newSymptoms });
+                               }}
+                               className="text-purple-400 hover:text-purple-600 focus:outline-none transition-colors"
+                             >
+                               <X className="w-3.5 h-3.5" />
+                             </button>
+                           </span>
+                         ))}
+                         <input
+                           type="text"
+                           placeholder="تایپ و اینتر کنید..."
+                           className="flex-1 bg-transparent border-none outline-none text-sm min-w-[150px] text-right font-vazir"
+                           onKeyDown={(e) => {
+                             if (e.key === 'Enter') {
+                               e.preventDefault();
+                               const input = e.currentTarget;
+                               const value = input.value.trim();
+                               if (value && !formData.symptoms.includes(value)) {
+                                 setFormData({
+                                   ...formData,
+                                   symptoms: [...(formData.symptoms || []), value]
+                                 });
+                                 input.value = '';
+                               }
+                             }
+                           }}
+                         />
+                       </div>
+                       <p className="text-[11px] text-gray-400 font-medium">پس از نوشتن هر علامت درمانی (مثلاً «درد مفاصل»)، کلید Enter را فشار دهید.</p>
+                     </div>
+                   </div>
+                 </div>
 
                 {/* Pricing Tab */}
                 <div className={activeTab === 'pricing' ? 'block space-y-4' : 'hidden'}>