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v2/adapter-realtime-broadcastchannel Architecture Notes

Responsibilities

• Provide a BroadcastChannel-backed IRealtimeEngine implementation for sandbox-style realtime.
• Maintain an in-memory snapshot store keyed by RealtimeDocId.
• Broadcast snapshot updates across browser tabs.

Files

• ARCHITECTURE.md - Role: folder architecture note; Purpose: describe the adapter package scope.
• src/BroadcastChannelRealtimeHub.ts - Role: adapter helper; Purpose: manage channel + in-memory snapshots.
• src/BroadcastChannelRealtimeEngine.ts - Role: realtime adapter; Purpose: map IRealtimeEngine to hub updates.
• src/di/register.ts - Role: DI helper; Purpose: register engine for BroadcastChannel realtime.
• src/di/tokens.ts - Role: DI tokens; Purpose: adapter token IDs.
• src/index.ts - Role: package entry; Purpose: export public adapter surface.