fixes

src/main/java/dev/zprestige/prestige/engine/EnginePlugin.java

@@ -52,14 +52,9 @@ public final class EnginePlugin implements IMixinConfigPlugin {
             String forced = System.getProperty("prestige.engine.namespace");   // test override ("named" / "intermediary")
             if (forced != null) namespace = forced;
             else try { namespace = FabricLoader.getInstance().getMappingResolver().getCurrentRuntimeNamespace(); } catch (Throwable t) { namespace = "named"; }
-            boolean named = namespace.equals("named");
-            ClassLoader loader = EnginePlugin.class.getClassLoader();
-            byte[] tiny = named ? null : resource("prestige-engine/mappings.tiny");
             List<String> transformers = lines("prestige-engine/transformers.list");
-            expectedTargets = lines(named ? "prestige-engine/targets.named.list" : "prestige-engine/targets.intermediary.list").size();
-            manager = new TransformerManager(new ResourceClassProvider(loader, new HashSet<>(transformers)), tiny == null ? null : new ByteArrayInputStream(tiny));
-            manager.setFailStrategy(FailStrategy.CANCEL);
-            for (String name : transformers) manager.addTransformer(name);
+            expectedTargets = lines(namespace.equals("named") ? "prestige-engine/targets.named.list" : "prestige-engine/targets.intermediary.list").size();
+            manager = createManager(namespace, transformers);
             if (manager.getTransformedClasses().size() != expectedTargets)
                 throw new IllegalStateException("Expected " + expectedTargets + " Minecraft targets, got " + manager.getTransformedClasses().size());
             EngineState.installed = true;
@@ -69,6 +64,16 @@ public final class EnginePlugin implements IMixinConfigPlugin {
         }
     }
 
+    /** Builds the ClassTransform manager for the given runtime namespace ("named" or "intermediary") and transformer class names. */
+    public static TransformerManager createManager(String namespace, List<String> transformers) throws IOException {
+        ClassLoader loader = EnginePlugin.class.getClassLoader();
+        byte[] tiny = namespace.equals("named") ? null : resource("prestige-engine/mappings.tiny");
+        TransformerManager manager = new TransformerManager(new ResourceClassProvider(loader, new HashSet<>(transformers)), tiny == null ? null : new ByteArrayInputStream(tiny));
+        manager.setFailStrategy(FailStrategy.CANCEL);
+        for (String name : transformers) manager.addTransformer(name);
+        return manager;
+    }
+
     /** Class bytes from the mod class path; the callbacks (void CInject/CModifyArgs handlers) get the readiness gate on the way. */
     private static final class ResourceClassProvider implements IClassProvider {
         private final ClassLoader loader;
@@ -131,14 +136,14 @@ public final class EnginePlugin implements IMixinConfigPlugin {
         }
     }
 
-    private static byte[] resource(String name) throws IOException {
+    public static byte[] resource(String name) throws IOException {
         try (InputStream in = EnginePlugin.class.getClassLoader().getResourceAsStream(name)) {
             if (in == null) throw new IllegalStateException("Missing engine resource: " + name);
             return in.readAllBytes();
         }
     }
 
-    private static List<String> lines(String name) throws IOException {
+    public static List<String> lines(String name) throws IOException {
         return new String(resource(name), StandardCharsets.UTF_8).lines().map(String::trim).filter(s -> !s.isEmpty()).toList();
     }