Collaborative editing requires managing connection states, cursor positions, pending changes, and conflict resolution — all of which map naturally to state machines.

• Connection states: disconnected → connecting → connected → reconnecting

• Change queue as actor context

• Conflict resolution as guard conditions

• Cursor broadcasting as parallel state

• Pattern: Data Fetching — Async communication

• Learn: Actor Model — Actor-based architecture

• Pattern: Undo/Redo — History management

• Add WebSocket connection machine

• Add CRDT merge machine

• Add cursor sync actor