Tower of DLC v0.1.2 — Native Light Cycle Patch

- Replaced the invisible pig + item-display Light Cycle workaround entirely.
- Added towerofdlc:cyan_light_cycle and towerofdlc:orange_light_cycle as registry-backed dai:native entities.
- Added dedicated native mesh models rendered directly by DAI's native mesh renderer.
- Added faction-specific emissive cyan/orange materials to the actual entity meshes.
- Bike Toggle still deploys/dismisses the vehicle from the starter kit.
- Light Cycles now auto-drive continuously in TRON style and steer from rider camera yaw.
- Added one-block step handling for the Core Spire's rising road segments.
- Removed all pig saddle, invisibility, and item_display visual synchronization from the bike runtime.

IMPORTANT: These are new registry-backed entity IDs. Install/replace the datapack while Minecraft is CLOSED, then launch fresh so DAI can register the native entity types during early bootstrap.
