The lobby chat was a standalone card sitting above the per-player log
tabs. Folds it into the same tab bar as the first (default-active)
tab instead, so the session log view has one consistent tab strip.
The tab-switching script now toggles by an .admin-tab-panel class
instead of assuming every panel's id starts with "player-", since
that's no longer true.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
