Add the **Retire HoF** (aka Gauntlet) rule as a genlocke-specific rule option. When enabled, Pokemon that enter the Hall of Fame at the end of a leg are NOT transferred to the next game — instead, they and their entire evolutionary families are added to a cumulative dupe list for all subsequent legs.
- This is a popular variant that increases difficulty by forcing entirely new Pokemon each generation
- The dupe list should be visible somewhere in the genlocke dashboard so the player knows which families are off-limits
## Checklist
- [ ] Add a `retireHoF` boolean (or equivalent) to the genlocke rules JSONB schema
- [ ] On leg completion with Retire HoF enabled: resolve the full evolutionary families of all surviving HoF Pokemon
- [ ] Store the cumulative retired families list (could be a JSONB field on the Genlocke, or derived from completed legs)
- [ ] Implement `GET /api/v1/genlockes/{id}/retired-families` — return the list of retired evolutionary families with which leg they were retired in
- [ ] Integrate with the encounter system's duplicates clause: when logging an encounter in a genlocke leg, check the cumulative retired list and flag duplicates
- [ ] Build a "Retired Families" display on the genlocke overview page showing all off-limits Pokemon with their sprites
- [ ] Ensure the creation wizard's genlocke rules step correctly toggles between Keep HoF and Retire HoF
