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/Controllers/CatalogController.cs

@@ -0,0 +1,62 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using LittleShop.DTOs;
+using LittleShop.Services;
+
+namespace LittleShop.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Authorize(AuthenticationSchemes = "Bearer")]
+public class CatalogController : ControllerBase
+{
+    private readonly ICategoryService _categoryService;
+    private readonly IProductService _productService;
+
+    public CatalogController(ICategoryService categoryService, IProductService productService)
+    {
+        _categoryService = categoryService;
+        _productService = productService;
+    }
+
+    [HttpGet("categories")]
+    public async Task<ActionResult<IEnumerable<CategoryDto>>> GetCategories()
+    {
+        var categories = await _categoryService.GetAllCategoriesAsync();
+        return Ok(categories.Where(c => c.IsActive));
+    }
+
+    [HttpGet("categories/{id}")]
+    public async Task<ActionResult<CategoryDto>> GetCategory(Guid id)
+    {
+        var category = await _categoryService.GetCategoryByIdAsync(id);
+        if (category == null || !category.IsActive)
+        {
+            return NotFound();
+        }
+
+        return Ok(category);
+    }
+
+    [HttpGet("products")]
+    public async Task<ActionResult<IEnumerable<ProductDto>>> GetProducts([FromQuery] Guid? categoryId = null)
+    {
+        var products = categoryId.HasValue 
+            ? await _productService.GetProductsByCategoryAsync(categoryId.Value)
+            : await _productService.GetAllProductsAsync();
+            
+        return Ok(products);
+    }
+
+    [HttpGet("products/{id}")]
+    public async Task<ActionResult<ProductDto>> GetProduct(Guid id)
+    {
+        var product = await _productService.GetProductByIdAsync(id);
+        if (product == null || !product.IsActive)
+        {
+            return NotFound();
+        }
+
+        return Ok(product);
+    }
+}