fix: resolve duel roots and recover legacy snake data

- Resolve selected moves and enemy replies on the same simulated turn.
- Add an Apex candidate hook and bump the Prism snake to version 1.1.0.
- Rebuild benchmark states from normalized turn data when snapshots are empty.
- Synthesize missing game snake identities during legacy database migration.
- Add regression coverage for duel timing and partial legacy schemas.

snakes/__init__.py

@@ -11,7 +11,7 @@ SNAKE_REGISTRY = {
   "UltimateBattleSnake": "4.5.0",
   "ApexBattleSnake": "1.0.0",
   "SupremeBattleSnake_ClaudeOpus4_6": "1.0.0",
-  "PrismBattleSnake_GPT_5_6_Sol": "1.0.1",
+  "PrismBattleSnake_GPT_5_6_Sol": "1.1.0",
 }
 
 DEFAULT_SNAKE_CONFIG = {