A pruning commit is answered with ResetCursor and an echo of its own
placement. A frame sent before that answer had already been folded
optimistically, and fold applied the relays straight onto view on top of
it. The echo is per frame, so the later placement was never re-sent: the
client sat at (1,0) while its mirror sat at (2,0), and the next write
landed on West where the TUI writes East.
#246 already queues each relay behind the head frame, so the queue holds
the right order. fold now rebuilds view as settled plus everything still
in flight whenever a relay queues, the same replay a refusal uses.
Replaying from settled, rather than re-applying what queued behind the
relay, is pinned by a ViewBack test: re-applying stepped back twice.
Stacked on #246 (fix/hv0r-jpba-relays, 790a33ba).
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VdfEGXA7aJ6ftMsCc9PJze
Edward Langley
e4b5ce9046