TurnStart / PlayActions / Echo / TurnEndActions / JudgeResult from a
real participant in Pvp mode forward to the other participant once
BothAfterReady. Scripted's bot-burst case arms (gated on
FakeOpponentViewerId) precede the PvP forwarder so they're unaffected.
The bot-emission TurnStart/TurnEnd/Judge guard was tightened from
`ReferenceEquals(from, A or B)` (always true) to call
IsRealForwardableFromScripted directly in the `when` clause. The prior
shape used `goto default` to drop non-bot senders, which would have
short-circuited the new PvP forwarder for TurnStart in PvP mode.
72dc1887d9