Initial commit of LittleShop project (excluding large archives)

- BTCPay Server integration
- TeleBot Telegram bot
- Review system
- Admin area
- Docker deployment configuration

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

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

LittleShop.Tests/Unit/CategoryServiceTests.cs

@@ -193,9 +193,10 @@ public class CategoryServiceTests : IDisposable
         // Assert
         result.Should().BeTrue();
 
-        // Verify in database
+        // Verify in database - soft delete means IsActive = false
         var dbCategory = await _context.Categories.FindAsync(categoryId);
-        dbCategory.Should().BeNull();
+        dbCategory.Should().NotBeNull();
+        dbCategory!.IsActive.Should().BeFalse();
     }
 
     [Fact]
@@ -212,7 +213,7 @@ public class CategoryServiceTests : IDisposable
     }
 
     [Fact]
-    public async Task DeleteCategoryAsync_WithProductsAttached_ThrowsException()
+    public async Task DeleteCategoryAsync_WithProductsAttached_SoftDeletesCategory()
     {
         // Arrange
         var categoryId = Guid.NewGuid();
@@ -240,11 +241,16 @@ public class CategoryServiceTests : IDisposable
         _context.Products.Add(product);
         await _context.SaveChangesAsync();
 
-        // Act & Assert
-        await Assert.ThrowsAsync<DbUpdateException>(async () =>
-        {
-            await _categoryService.DeleteCategoryAsync(categoryId);
-        });
+        // Act
+        var result = await _categoryService.DeleteCategoryAsync(categoryId);
+
+        // Assert - soft delete should succeed even with products
+        result.Should().BeTrue();
+        
+        // Verify category is soft deleted
+        var dbCategory = await _context.Categories.FindAsync(categoryId);
+        dbCategory.Should().NotBeNull();
+        dbCategory!.IsActive.Should().BeFalse();
     }
 
     public void Dispose()