feat: add launch readiness features for OMS

- Implement VAT tax calculation on order creation based on EU country rates
- Add post-order hooks: customer stats update, cart clear, email confirmation
- Create shop order history page with pagination and status badges
- Create shop order detail page with order items and addresses
- Add order_confirmation email templates in 4 languages (en, fr, de, lb)

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/api/v1/shop/orders.py

@@ -12,6 +12,7 @@ Customer Context: get_current_customer_api returns Customer directly
 """
 
 import logging
+from datetime import UTC, datetime
 
 from fastapi import APIRouter, Depends, Path, Query, Request
 from sqlalchemy.orm import Session
@@ -19,7 +20,10 @@ from sqlalchemy.orm import Session
 from app.api.deps import get_current_customer_api
 from app.core.database import get_db
 from app.exceptions import VendorNotFoundException
+from app.services.cart_service import cart_service
+from app.services.email_service import EmailService
 from app.services.order_service import order_service
+from app.utils.money import cents_to_euros
 from models.database.customer import Customer
 from models.schema.order import (
     OrderCreate,
@@ -81,9 +85,53 @@ def place_order(
         },
     )
 
-    # TODO: Update customer stats
-    # TODO: Clear cart
-    # TODO: Send order confirmation email
+    # Update customer stats
+    customer.total_orders = (customer.total_orders or 0) + 1
+    customer.total_spent = (customer.total_spent or 0) + order.total_amount
+    customer.last_order_date = datetime.now(UTC)
+    db.flush()
+
+    logger.debug(
+        f"Updated customer stats: total_orders={customer.total_orders}, "
+        f"total_spent={customer.total_spent}"
+    )
+
+    # Clear cart (get session_id from request cookies or headers)
+    session_id = request.cookies.get("cart_session_id") or request.headers.get(
+        "X-Cart-Session-Id"
+    )
+    if session_id:
+        try:
+            cart_service.clear_cart(db, vendor.id, session_id)
+            logger.debug(f"Cleared cart for session {session_id}")
+        except Exception as e:
+            logger.warning(f"Failed to clear cart: {e}")
+
+    # Send order confirmation email
+    try:
+        email_service = EmailService(db)
+        email_service.send_template(
+            template_code="order_confirmation",
+            to_email=customer.email,
+            to_name=customer.full_name,
+            language=customer.preferred_language or "en",
+            variables={
+                "customer_name": customer.first_name or customer.full_name,
+                "order_number": order.order_number,
+                "order_total": f"€{order.total_amount:.2f}",
+                "order_items_count": len(order.items),
+                "order_date": order.order_date.strftime("%d.%m.%Y")
+                if order.order_date
+                else "",
+                "shipping_address": f"{order.ship_address_line_1}, {order.ship_postal_code} {order.ship_city}",
+            },
+            vendor_id=vendor.id,
+            related_type="order",
+            related_id=order.id,
+        )
+        logger.info(f"Sent order confirmation email to {customer.email}")
+    except Exception as e:
+        logger.warning(f"Failed to send order confirmation email: {e}")
 
     return OrderResponse.model_validate(order)