Even with the partial correctly registered, a template rendering failure
should not abort the entire reroll handler. Without try/catch, the
exception propagates out of the do-while loop and prevents combat result
creation. The reroll value was applied but nothing else happened.
D30 bonus dice now rolled at defense request time, not in defense handler.
Sends boosted attackRoll + d30AttackEffects in socket/nextDefenseData
so both clients agree on the value. Adds stale flag for mulligan rerolls
to bypass stale pre-computed effects and process the new D30 fresh.
uberwald