feat(succession): transfer tyrant reign on death

design/user-stories/us-002-transfer-and-reset-tyrant.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-002: Transfer and reset the Tyrant role"
 description: End a Tyrant's reign cleanly and establish a valid successor after death.
-status: backlog
+status: done
 ---
 
 # US-002: Transfer and reset the Tyrant role
@@ -11,15 +11,15 @@ As a **player**, I want defeating the Tyrant to transfer power predictably so th
 
 ## Acceptance criteria
 
-- [ ] A player directly credited with killing the Tyrant becomes the new Tyrant.
-- [ ] A Tyrant death without a player killer selects an eligible opted-in player active within the preceding 24 hours at random.
-- [ ] The former Tyrant is excluded from random succession when another eligible candidate exists.
-- [ ] The former Tyrant's level, unlocks, unspent choices, and Tyrant ability cooldowns reset when the reign ends.
-- [ ] Every Assassin, Fixer, Tamer, Vigilante, and Follower assignment is cleared when the Tyrant dies.
-- [ ] A new Vigilante is selected under the normal candidate rules after succession.
-- [ ] The new Tyrant receives exactly one starting unlock choice.
-- [ ] The Tyrant's displayed name is red and the Tyrant has a red glowing outline while the game is running.
-- [ ] Succession cannot assign the same player as both Tyrant and Vigilante.
+- [x] A player directly credited with killing the Tyrant becomes the new Tyrant.
+- [x] A Tyrant death without a player killer selects an eligible opted-in player active within the preceding 24 hours at random.
+- [x] The former Tyrant is excluded from random succession when another eligible candidate exists.
+- [x] The former Tyrant's level, unlocks, unspent choices, and Tyrant ability cooldowns reset when the reign ends.
+- [x] Every Assassin, Fixer, Tamer, Vigilante, and Follower assignment is cleared when the Tyrant dies.
+- [x] A new Vigilante is selected under the normal candidate rules after succession.
+- [x] The new Tyrant receives exactly one starting unlock choice.
+- [x] The Tyrant's displayed name is red and the Tyrant has a red glowing outline while the game is running.
+- [x] Succession cannot assign the same player as both Tyrant and Vigilante.
 
 ## Related