Harry Bayliss
95b1967e9b
- daemon_net: close the client transport on context cancellation so the per-connection Recv loop unblocks; otherwise wg.Wait() in the accept loop hung on a still-connected client and the daemon never stopped. - protocol: guard ConnTransport.Send with a mutex so the subscriber pump and command handlers can push frames concurrently without racing the bufio.Writer. Fixes TestDaemonDetachReattachPreservesProcess (now passes under -race).