Switching to a Harder Migration Target

The first comparison used eShopOnWeb, which was useful for testing the workflow, but it is still a relatively moderate codebase.

That makes it good for a first pass, but not ideal for stressing the parts that break during real migrations: hidden coupling, mixed concerns, runtime assumptions, and behavior spread across many layers.

For the next step, I switched to nopCommerce.

At the same time, the model landscape also changed. New models became available, including Fable, so this round focuses on a new comparison instead of repeating the exact same lineup.