Phase 0 : compile SUCCESS (464 -> 0 errors)

Core data model du rig EF extractible compile désormais cleanly.

Changements clé :

1. AccessTransformer wiring (-80 errors)
   - Copie EF accesstransformer.cfg dans resources/META-INF/
   - Uncomment accessTransformer = file(...) dans build.gradle
   - Débloque l'héritage des package-private RenderType.CompositeState +
     RenderType.CompositeRenderType + RenderType.OutlineProperty nécessaires
     à TiedUpRenderTypes.

2. Stubs compat rendering Phase 2
   - PatchedEntityRenderer<E,T,M,R> : type param 4 pour PrepareModelEvent
   - RenderItemBase : type marker pour PatchedRenderersEvent.RegisterItemRenderer
   - LayerUtil + LayerProvider : interface fonctionnelle 5-params pour RegisterResourceLayersEvent
   - PlayerPatch<T extends Player> : extends LivingEntityPatch
   - ToolHolderArmature interface : leftTool/rightTool/backToolJoint()

3. Stubs compat combat Phase 2+
   - AttackResult + ResultType enum : utilisé comme type pour StateFactor ATTACK_RESULT
   - TrailInfo record : stubbé avec playable=false → particle trail jamais émis
   - AttackAnimation.Phase.hand = InteractionHand.MAIN_HAND
   - AttackAnimation.JointColliderPair : stub pour instanceof check
   - AttackAnimation.getPhaseByTime(float) : retourne Phase neutre
   - ActionAnimation.correctRootJoint() : no-op Phase 0
   - ActionAnimation.BEGINNING_LOCATION + INITIAL_LOOK_VEC_DOT re-exposés comme AnimationVariables

4. Physics types alignés
   - InverseKinematicsProvider extends SimulationProvider<...>
   - InverseKinematicsSimulator implements PhysicsSimulator<Joint, ...>
   - InverseKinematicsObject implements SimulationObject<...>
   - InverseKinematicsBuilder extends SimulationObject.SimulationObjectBuilder
   - ik.bake() signature : (Object, Object, boolean, boolean) conforme StaticAnimation usage

5. Mesh/compute stubs
   - ComputeShaderSetup.TOTAL_POSES + TOTAL_NORMALS : OpenMatrix4f[MAX_JOINTS] pool
   - ComputeShaderSetup.MeshPartBuffer inner class + destroyBuffers()
   - ComputeShaderProvider.supportComputeShader() = false
   - VanillaModelTransformer.VanillaMeshPartDefinition record minimal
   - HumanoidMesh.getHumanoidArmorModel() : return null (armor rendering Phase 2)

6. Fixes typage / API
   - TiedUpRenderTypes.prefix("x").toString() x15 : ResourceLocation -> String
   - AnimationManager Logger : log4j -> slf4j
   - TiedUpRigConstants.logAndStacktraceIfDevSide 4-arg overload + Throwable instead of RuntimeException
   - LivingEntityPatch.getReach(InteractionHand) overload
   - StaticAnimation(boolean, String, AssetAccessor) 3-arg overload

Result : compileJava -> BUILD SUCCESSFUL
Prochain jalon : runClient + verify rig se charge sans crash.

build.gradle

@@ -66,7 +66,7 @@ minecraft {
     // However, it must be at "META-INF/accesstransformer.cfg" in the final mod jar to be loaded by Forge.
     // This default location is a best practice to automatically put the file in the right place in the final jar.
     // See https://docs.minecraftforge.net/en/latest/advanced/accesstransformers/ for more information.
-    // accessTransformer = file('src/main/resources/META-INF/accesstransformer.cfg')
+    accessTransformer = file('src/main/resources/META-INF/accesstransformer.cfg')
 
     // Default run configurations.
     // These can be tweaked, removed, or duplicated as needed.