Persist channel DRED settings

tests/VoiceCat.Tests/AccountStoreTests.cs

@@ -54,4 +54,33 @@ public sealed class AccountStoreTests
         }
         finally { Directory.Delete(directory, true); }
     }
+
+    [Fact]
+    public void VersionTwoDatabaseMigratesDredAsDisabled()
+    {
+        string directory = Path.Combine(Path.GetTempPath(), "voicecat-v2-" + Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(directory);
+        string path = Path.Combine(directory, "voicecat.db");
+        try
+        {
+            using (var store = new AccountStore(path)) store.LoadChannels();
+            using (var connection = new SqliteConnection(new SqliteConnectionStringBuilder { DataSource = path, Pooling = false }.ToString()))
+            {
+                connection.Open();
+                using var command = connection.CreateCommand();
+                command.CommandText = "ALTER TABLE channels DROP COLUMN audio_dred; UPDATE server_meta SET value='2' WHERE key='schema_version';";
+                command.ExecuteNonQuery();
+            }
+
+            using (var migrated = new AccountStore(path))
+                Assert.All(migrated.LoadChannels(), channel => Assert.False(channel.Audio.Dred));
+
+            using var verify = new SqliteConnection(new SqliteConnectionStringBuilder { DataSource = path, Pooling = false }.ToString());
+            verify.Open();
+            using var query = verify.CreateCommand();
+            query.CommandText = "SELECT value FROM server_meta WHERE key='schema_version'";
+            Assert.Equal("3", query.ExecuteScalar());
+        }
+        finally { Directory.Delete(directory, true); }
+    }
 }