Fredrik Johansson be072c7309 Add test-network.sh and fix IPC goroutine lifecycle bugs ...

test-network.sh: shell script that starts anchor + alice + bob + charlie,
joins them to a named network, exchanges five messages, then has charlie
leave — verifying the full join/chat/leave cycle with coloured per-peer output.

ipc: two fixes exposed by the test script:
- Network join context was per-IPC-client, so the join was immediately
  cancelled when the nc connection closed. Lifted join/leave state to the
  Run() level (shared across all clients, protected by a mutex) so the
  network stays connected independent of which client issued the command.
- Event-pusher goroutine could panic with "send on closed channel" when
  the command loop closed writeCh while the pusher was mid-select. Added
  defer recover() to both the pusher goroutine and the send helper, and
  removed the default arm so the select blocks cleanly on done.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-06-21 17:55:28 +02:00

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