feat: Add Telegram chat ID to ShopModel for automatic invoice sending

chore: Update Dockerfile to install WeasyPrint dependencies

feat: Enhance ShopOrderModelAdmin with invoice download buttons

feat: Implement invoice generation for OrderModel and ShopOrderModel

feat: Send invoice to shop's Telegram chat upon ShopOrderModel creation

feat: Create Celery task to send shop order invoice via Telegram

feat: Add invoice download endpoints for OrderModel and ShopOrderModel

feat: Implement views for downloading order and shop order invoices

chore: Update requirements.txt to include necessary packages for PDF generation

feat: Create HTML templates for order and shop order invoices

backend/account/migrations/0034_add_telegram_chat_id_to_shop.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.1.2 on 2025-12-28 08:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('account', '0033_shopmodel_commission_percent'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='shopmodel',
+            name='telegram_chat_id',
+            field=models.CharField(blank=True, help_text='برای ارسال خودکار فاکتورها به تلگرام', max_length=100, null=True, verbose_name='شناسه چت تلگرام'),
+        ),
+    ]

backend/account/models.py

@@ -143,6 +143,7 @@ class ShopModel(models.Model):
     shop_name = models.CharField(max_length=100, verbose_name='نام فروشگاه')
     shop_description = models.TextField(verbose_name='توضیحات فروشگاه')
     commission_percent = models.DecimalField(max_digits=5, decimal_places=2, verbose_name='درصد کمیسیون')
+    telegram_chat_id = models.CharField(max_length=100, blank=True, null=True, verbose_name='شناسه چت تلگرام', help_text='برای ارسال خودکار فاکتورها به تلگرام')
 
     def __str__(self):
         return f"{self.user.phone} - {self.shop_name}"