honestly fixed so much and forgot to commit

Signed-off-by: Sienna Meridian Satterwhite <sienna@r3t.io>

crates/libmarathon/src/persistence/registered_components.rs

@@ -0,0 +1,64 @@
+//! Component registrations for CRDT synchronization
+//!
+//! This module registers all components that should be synchronized across
+//! the network using the inventory-based type registry.
+//!
+//! # When to use this file vs `#[synced]` attribute
+//!
+//! **Use `#[synced]` attribute for:**
+//! - Your own component types defined in this codebase
+//! - Any type you have source access to
+//! - Most game components (entities, markers, etc.)
+//! - Example: `#[synced] pub struct CubeMarker { ... }`
+//!
+//! **Use manual `inventory::submit!` here for:**
+//! - Third-party types (Bevy's Transform, external crates)
+//! - Types that need custom serialization logic
+//! - Types where the serialized format differs from in-memory format
+//!
+//! # Currently registered external types
+//!
+//! - `Transform` - Bevy's transform component (needs custom rkyv conversion)
+
+use std::any::TypeId;
+
+// Register Transform for synchronization
+// We serialize Bevy's Transform but convert to our rkyv-compatible type
+inventory::submit! {
+    crate::persistence::ComponentMeta {
+        type_name: "Transform",
+        type_path: "bevy::transform::components::transform::Transform",
+        type_id: TypeId::of::<bevy::prelude::Transform>(),
+
+        deserialize_fn: |bytes: &[u8]| -> anyhow::Result<Box<dyn std::any::Any>> {
+            let transform: crate::transform::Transform = rkyv::from_bytes::<crate::transform::Transform, rkyv::rancor::Failure>(bytes)?;
+            // Convert back to Bevy Transform
+            let bevy_transform = bevy::prelude::Transform {
+                translation: transform.translation.into(),
+                rotation: transform.rotation.into(),
+                scale: transform.scale.into(),
+            };
+            Ok(Box::new(bevy_transform))
+        },
+
+        serialize_fn: |world: &bevy::ecs::world::World, entity: bevy::ecs::entity::Entity| -> Option<bytes::Bytes> {
+            world.get::<bevy::prelude::Transform>(entity).map(|bevy_transform| {
+                // Convert to our rkyv-compatible Transform
+                let transform = crate::transform::Transform {
+                    translation: bevy_transform.translation.into(),
+                    rotation: bevy_transform.rotation.into(),
+                    scale: bevy_transform.scale.into(),
+                };
+                let serialized = rkyv::to_bytes::<rkyv::rancor::Failure>(&transform)
+                    .expect("Failed to serialize Transform");
+                bytes::Bytes::from(serialized.to_vec())
+            })
+        },
+
+        insert_fn: |entity_mut: &mut bevy::ecs::world::EntityWorldMut, boxed: Box<dyn std::any::Any>| {
+            if let Ok(transform) = boxed.downcast::<bevy::prelude::Transform>() {
+                entity_mut.insert(*transform);
+            }
+        },
+    }
+}