Update search provider sort logic, and added testing for circle search provider.

JSMR.Tests/Fixtures/CircleSearchProviderFixture.cs

@@ -0,0 +1,28 @@
+using JSMR.Infrastructure.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace JSMR.Tests.Fixtures;
+
+public class CircleSearchProviderFixture : MariaDbFixture
+{
+    protected override async Task OnInitializedAsync(AppDbContext context)
+    {
+        await SeedAsync(context);
+    }
+
+    private static async Task SeedAsync(AppDbContext context)
+    {
+        // Make seeding idempotent (quick existence check)
+        if (await context.Circles.AnyAsync())
+            return;
+
+        context.Circles.AddRange(
+            new() { CircleId = 1, Name = "Good Dreams", MakerId = "RG00001" },
+            new() { CircleId = 2, Name = "Sweet Dreams", Favorite = true, MakerId = "RG00002" },
+            new() { CircleId = 3, Name = "Nightmare Fuel", Blacklisted = true, MakerId = "RG00003" },
+            new() { CircleId = 4, Name = "Garbage Studio", Spam = true, MakerId = "RG00004" }
+        );
+
+        await context.SaveChangesAsync();
+    }
+}