diff --git a/tests/Aetheria.Shared.Tests/ConsumablesFirstSetCommandTests.cs b/tests/Aetheria.Shared.Tests/ConsumablesFirstSetCommandTests.cs
new file mode 100644
index 000000000..db8e59f32
--- /dev/null
+++ b/tests/Aetheria.Shared.Tests/ConsumablesFirstSetCommandTests.cs
@@ -0,0 +1,76 @@
+using System;
+using System.IO;
+using System.Linq;
+using GameCult.Caching;
+using GameCult.Caching.MessagePack;
+using Xunit;
+
+// AetherDb's consumables-first-set command (aetheria-release, cut consumables-first-set), run on a scratch copy of the
+// shipped catalog with the two designs and their four products removed from it.
+public sealed class ConsumablesFirstSetCommandTests : IDisposable
+{
+    private static readonly string[] DesignNames = { "Thruster Overdrive", "Coolant Vent" };
+
+    private readonly string _root = Path.Combine(Path.GetTempPath(), "consumables-command-" + Guid.NewGuid().ToString("N"));
+    private string CatalogPath => Path.Combine(_root, "GameData", "Aetheria.cc");
+
+    public ConsumablesFirstSetCommandTests()
+    {
+        Directory.CreateDirectory(Path.Combine(_root, "GameData"));
+        Directory.CreateDirectory(Path.Combine(_root, "Assets", "Resources"));
+        var shipped = AetherDb.FindRoot();
+        File.Copy(Path.Combine(shipped, "GameData", "Aetheria.cc"), CatalogPath);
+        File.Copy(Path.Combine(shipped, "Assets", "Resources", "Settings.asset"), Path.Combine(_root, "Assets", "Resources", "Settings.asset"));
+        // Stripped through a registry scoped to the shipped assembly, as PiratesFactionCommandTests does.
+        using var cache = new CultCache(TestCatalog.Registry());
+        cache.AddBackingStore(new SingleFileMessagePackBackingStore(CatalogPath), AetheriaStores.CatalogTypes);
+        var designs = cache.GetAll<ConsumableItemData>().Where(c => DesignNames.Contains(c.Name)).ToArray();
+        Assert.Equal(DesignNames.Length, designs.Length);
+        var keys = designs.Select(d => cache.RefOf(d).Key).ToArray();
+        foreach (var product in cache.GetAll<FactionProductData>().Where(p => keys.Any(k => p.Design.Key.Equals(k))).ToArray())
+            Assert.True(cache.Remove(cache.RefOf(product).Key));
+        foreach (var key in keys) Assert.True(cache.Remove(key));
+        cache.FlushAsync().Wait();
+    }
+
+    public void Dispose() => Directory.Delete(_root, true);
+
+    private (ConsumableItemData[] Designs, FactionProductData[] Products) Read()
+    {
+        var db = AetherDb.Open(root: _root);
+        try
+        {
+            var designs = db.Cache.GetAll<ConsumableItemData>().Where(c => DesignNames.Contains(c.Name)).ToArray();
+            var products = db.Cache.GetAll<FactionProductData>().Where(p => designs.Any(d => p.Design.Key.Equals(db.Cache.RefOf(d).Key))).ToArray();
+            return (designs, products);
+        }
+        finally { db.Cache.Dispose(); }
+    }
+
+    [Fact]
+    public void A_dry_run_writes_nothing_and_apply_lands_the_designs_once()
+    {
+        var before = File.ReadAllBytes(CatalogPath);
+        Assert.Empty(Read().Designs);
+
+        Assert.Equal(0, Program.ConsumablesFirstSetCatalog(apply: false, root: _root));
+        Assert.Equal(before, File.ReadAllBytes(CatalogPath));
+        Assert.Empty(Read().Designs);
+
+        Assert.Equal(0, Program.ConsumablesFirstSetCatalog(apply: true, root: _root));
+        var landed = File.ReadAllBytes(CatalogPath);
+        Assert.NotEqual(before, landed);
+        var (designs, products) = Read();
+        Assert.Equal(DesignNames.OrderBy(n => n, StringComparer.Ordinal), designs.Select(d => d.Name).OrderBy(n => n, StringComparer.Ordinal));
+        Assert.Equal(4, products.Length);
+
+        // A second apply finds both designs authored and writes nothing; so does a dry run.
+        Assert.Equal(0, Program.ConsumablesFirstSetCatalog(apply: true, root: _root));
+        Assert.Equal(landed, File.ReadAllBytes(CatalogPath));
+        Assert.Equal(0, Program.ConsumablesFirstSetCatalog(apply: false, root: _root));
+        Assert.Equal(landed, File.ReadAllBytes(CatalogPath));
+        var (designsAgain, productsAgain) = Read();
+        Assert.Equal(2, designsAgain.Length);
+        Assert.Equal(4, productsAgain.Length);
+    }
+}
diff --git a/tests/Aetheria.Shared.Tests/ConsumablesFirstSetTests.cs b/tests/Aetheria.Shared.Tests/ConsumablesFirstSetTests.cs
index 9befc3292..c96209cca 100644
--- a/tests/Aetheria.Shared.Tests/ConsumablesFirstSetTests.cs
+++ b/tests/Aetheria.Shared.Tests/ConsumablesFirstSetTests.cs
@@ -14,6 +14,8 @@ public sealed class ConsumablesFirstSetTests
 {
     private const string OverdriveName = "Thruster Overdrive";
     private const string VentName = "Coolant Vent";
+    private const float SpecificHeat = -1f;
+    private const float Conductivity = -1f;
     private const float Tick = .25f; // exact in floats, so a duration of 6 s is 24 ticks and 15 s is 60
 
     private static ConsumableItemData Design(CultCache cache, string name) => Assert.Single(cache.GetAll<ConsumableItemData>(), c => c.Name == name);
@@ -25,6 +27,7 @@ public sealed class ConsumablesFirstSetTests
         var term = Assert.Single(stat.Terms);
         Assert.Equal(StatSource.Quality, term.Source);
         Assert.Equal(role, term.Role);
+        Assert.Equal(1f, term.Exponent); // linear in the role's quality: a design's range is the whole of what quality changes
     }
 
     private static void AssertModifier(BehaviorData behavior, string target, string stat, float min, float max, string role)
@@ -85,7 +88,9 @@ public sealed class ConsumablesFirstSetTests
         foreach (var design in new[] { overdrive, vent })
         {
             CultRecordRefs.Validate(design); // every modifier resolves and every role a stat reads is declared
-            Assert.True(design.SpecificHeat > 0f && design.Conductivity > 0f);
+            // The thermal constants are the catalog's 1x1 tool's (the Targeting Computer), pinned so a re-author cannot drift them.
+            Assert.Equal(SpecificHeat, design.SpecificHeat);
+            Assert.Equal(Conductivity, design.Conductivity);
 
             var products = cache.GetAll<FactionProductData>().Where(p => p.Design.Key.Equals(cache.RefOf(design).Key)).ToArray();
             Assert.Equal(2, products.Length);