## Description:
Adds the anti-stall **Doomsday Clock** to the public "special" modifier
rotation, so it rolls into public games like the other spice modifiers,
with a lobby badge.
- `MapPlaylist`: new `isDoomsdayClock` ticket in `SPECIAL_MODIFIER_POOL`
(weight 4, ~20% of special games). When rolled, enables `doomsdayClock`
at a speed picked per game (slow/normal/fast/veryfast).
- `PublicGameModifiers` (type + schema): `isDoomsdayClock` flag drives
the badge.
- `getActiveModifiers` + `en.json`: a "Doomsday Clock" badge/label.
- Test covering the badge wiring.
## Please complete the following:
- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
