Queue Pion state, candidate and selected-pair notifications together with ICE dial results. Move worker state updates to the peer event loop and expose atomic snapshots to signaling and the reconnection guard.
Keep the existing session ownership checks and disconnect behavior. Release dial results when the mailbox cannot deliver them.
Relocate WorkerICE (renamed worker.ICE) and WorkerRelay plus ConnPriority
into client/internal/peer/worker. To break the peer<->worker cycle the
workers no longer take *Conn or ConnConfig: callbacks are passed as plain
functions (Conn's unexported methods as method values), and each worker
receives only the fields it needs (key, ICE config, isController) plus a
small services struct. Context is passed to OnNewOffer instead of stored.
Move the worker connection-status helper the other way, out of the worker
package into peer as worker_status.go (WorkerStatus / AtomicWorkerStatus),
since only Conn uses it.
Zoltán Papp