A bot game gets its own ludo_matches row (action start, mode bot), and
complete pays its creator once through complete_match with the bot seats
as null: nothing under 90 s, nothing for a walked-away game, 403 for
anyone else. The result card shows the real coins and XP.

From the design review: the die is the roll key (#roll-btn), an idle full
face on a lip in the roller's colour, instead of a die beside a button
with a red pip in a glowing ring; plates use the shared avatar (purple
rounded square for people, ink with the robot for bots); the room's start
key is pinned above the dock with compact seat cards, checked uncovered at
360x640, 390x844 and 430x932. tests/play/ludo.mjs 83/84 then 37/37 for
the local games after fixing the opening roll in the one lucky check.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>