effect-three reference checkouts

Behavioural references for parity work. They are shallow clones at the root of the main checkout, ignored by git (.gitignore), and skipped by oxlint and oxfmt for the same reason. Read them; don’t copy from them (see the R3F reference rule in CLAUDE.md).

Checkout	Upstream	Pinned commit	Commit date	Version	Licence	Use for
react-three-fiber-main/	pmndrs/react-three-fiber	d74622e	2026-10-14	fiber 9.8.1	MIT	Events, frame loop, invalidate/advance, disposal, primitive, portals, root configuration
drei-main/	pmndrs/drei	bf6f4ad	2026-09-30	master	MIT	Helpers, controls, loaders and staging (final roadmap phase)
react-three-rapier-main/	pmndrs/react-three-rapier	ae5c3fe	2025-11-03	2.2.0	MIT	Physics (R5): Physics stepping, RigidBody options, auto colliders, InstancedRigidBodies, joints
react-three-xr-main/	pmndrs/xr	0e1acd8	2026-10-15	main	MIT	XR (R5): session init, pointers, hit tests, controller locomotion, IWER emulation
three-effect-main/	OpenAgentsInc/three-effect	714c37e	2026-07-14	main	Apache-2.0	Secondary: prior Effect + Foldkit bindings (see ADR-001)
node_modules/three	mrdoob/three.js	—	—	0.186.1	MIT	Ground truth for three.js behaviour, including examples/jsm controls and loaders

Where to start in R3F (packages/fiber/src):

• core/events.ts: the handler set, the intersection payload, propagation and pointer capture.
• core/loop.ts: frameloop modes, invalidate(frames) and advance(timestamp).
• core/configuration.ts: root options (gl, dpr, shadows, flat, linear, orthographic, frameloop, performance, raycaster, onPointerMissed).
• core/reconciler.tsx: primitive, attach, and disposal (dispose={null} opt-out, disposeOnIdle).
• core/hooks.tsx: useFrame priorities, useLoader; core/portal.tsx: createPortal.

Refreshing a pin

From the main checkout root:

git -C react-three-fiber-main fetch --depth 1 origin master
git -C react-three-fiber-main checkout FETCH_HEAD
git -C react-three-fiber-main rev-parse --short HEAD

Then update the table. A new pin changes what “parity” means, so note it in the roadmap if any row’s status changes.