Implement complete e-commerce functionality with shipping and order management

Features Added:
- Standard e-commerce properties (Price, Weight, shipping fields)
- Order management with Create/Edit views and shipping information
- ShippingRates system for weight-based shipping calculations
- Comprehensive test coverage with JWT authentication tests
- Sample data seeder with 5 orders demonstrating full workflow
- Photo upload functionality for products
- Multi-cryptocurrency payment support (BTC, XMR, USDT, etc.)

Database Changes:
- Added ShippingRates table
- Added shipping fields to Orders (Name, Address, City, PostCode, Country)
- Renamed properties to standard names (BasePrice to Price, ProductWeight to Weight)
- Added UpdatedAt timestamps to models

UI Improvements:
- Added Create/Edit views for Orders
- Added ShippingRates management UI
- Updated navigation menu with Shipping option
- Enhanced Order Details view with shipping information

Sample Data:
- 3 Categories (Electronics, Clothing, Books)
- 5 Products with various prices
- 5 Shipping rates (Royal Mail options)
- 5 Orders in different statuses (Pending to Delivered)
- 3 Crypto payments demonstrating payment flow

Security:
- All API endpoints secured with JWT authentication
- No public endpoints - client apps must authenticate
- Privacy-focused design with minimal data collection

Generated with Claude Code

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

LittleShop/Areas/Admin/Controllers/DashboardController.cs

@@ -0,0 +1,38 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using LittleShop.Services;
+
+namespace LittleShop.Areas.Admin.Controllers;
+
+[Area("Admin")]
+[Authorize(Policy = "AdminOnly")]
+public class DashboardController : Controller
+{
+    private readonly IOrderService _orderService;
+    private readonly IProductService _productService;
+    private readonly ICategoryService _categoryService;
+
+    public DashboardController(
+        IOrderService orderService,
+        IProductService productService,
+        ICategoryService categoryService)
+    {
+        _orderService = orderService;
+        _productService = productService;
+        _categoryService = categoryService;
+    }
+
+    public async Task<IActionResult> Index()
+    {
+        var orders = await _orderService.GetAllOrdersAsync();
+        var products = await _productService.GetAllProductsAsync();
+        var categories = await _categoryService.GetAllCategoriesAsync();
+
+        ViewData["TotalOrders"] = orders.Count();
+        ViewData["TotalProducts"] = products.Count();
+        ViewData["TotalCategories"] = categories.Count();
+        ViewData["TotalRevenue"] = orders.Where(o => o.PaidAt.HasValue).Sum(o => o.TotalAmount);
+
+        return View();
+    }
+}