StartMatch rolled exactly one random Hunter. Add a serialized hunterCount
field (default 1, [Min(0)], inspector-tunable) and roll N distinct random
Hunters via a partial Fisher-Yates on the client-id list, clamped to the
player count: 0 = all Hiders, >= player count = all Hunters. The match
sequence now carries a HashSet of hunter ids instead of a single id.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>