Country and service controls now work in the demo

Finding a partner starts with two questions: where, and what kind of work. The local Flutter demo now has working controls for both.

The location list has 58 entries, including territories, and the service list has 107 entries across trades and project services. You can combine them to narrow what you see.

Limits worth stating

This runs on my machine with sample data. There is no real marketplace, no sign-in and no backend behind it. A location appearing in the list says nothing about whether partners are available there.