v0.2.0-beta

• Party player beta: opt-in invitations, joined-player question buttons, host-confirmed answers, reveals, streaks and shared scores.
• A bounded presentation step keeps addon and chat answers behind the same opening announcement, with a chat fallback for delayed clients.
• Completed matches sync to joined clients with duplicate-safe history, final standings and per-round scores.
• This implementation is currently limited to Retail home Parties outside instances and combat. Full in-game acceptance is still outstanding.

Both host and addon participants need 0.2.0-beta. Choose Party output, click
Open Party lobby, let players join, then click Start game. Other players can
still answer 1-4 in Party chat. The new full-game interface needs in-game
acceptance; the existing paired-client proof covers the transport probe.