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src/Policy/__Tests/StellaOps.Policy.Engine.Tests/AdvisoryAiKnobsServiceTests.cs

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+using StellaOps.Policy.Engine.AdvisoryAI;
+
+namespace StellaOps.Policy.Engine.Tests;
+
+public sealed class AdvisoryAiKnobsServiceTests
+{
+    [Fact]
+    public void Get_ReturnsDefaultsWithHash()
+    {
+        var service = new AdvisoryAiKnobsService(TimeProvider.System);
+        var profile = service.Get();
+
+        Assert.NotEmpty(profile.Knobs);
+        Assert.False(string.IsNullOrWhiteSpace(profile.ProfileHash));
+    }
+
+    [Fact]
+    public void Set_NormalizesOrdering()
+    {
+        var service = new AdvisoryAiKnobsService(TimeProvider.System);
+
+        var profile = service.Set(new[]
+        {
+            new AdvisoryAiKnob("Time_Decay_Half_Life_Days", 20m, 1m, 365m, 1m, "decay"),
+            new AdvisoryAiKnob("ai_signal_weight", 1.5m, 0m, 2m, 0.1m, "weight")
+        });
+
+        Assert.Equal("ai_signal_weight", profile.Knobs[0].Name);
+        Assert.Equal("time_decay_half_life_days", profile.Knobs[1].Name);
+    }
+}