GraphReFly reactive data structures.

reactiveMap, reactiveList, reactiveLog, reactiveIndex — built on imbl persistent immutable collections so that Phase 14 op-log changesets get O(log n) snapshot-and-revert naturally:

• Each emit is a function State -> State returning a new persistent collection.
• Rollback = use the prior Arc<State>. Glitch-free by construction.
• Diff = pointer compare on Arc::ptr_eq is O(1); structural diff via imbl::HashMap::diff is O(log n).

CRDT-backed variants (yrs / automerge / loro / diamond-types) are post-1.0 work, gated behind feature flags. The Rust ecosystem's CRDT libraries are the canonical implementations — yjs JS users increasingly run yrs under WASM.

Status

Scaffold. Implementation lands during Milestone 5 of the Rust port, together with the user-facing Phase 14 op-log changeset API.

Module layout (planned)

• map — reactiveMap (imbl::HashMap-backed)
• list — reactiveList (imbl::Vector-backed)
• log — reactiveLog (append-only op-log)
• index — reactiveIndex (composite index over a reactiveMap)
• changeset — Phase 14 op-log delta protocol