Adds allowedTypes: string[] to NuzlockeRules. When set, the encounter selector hides non-matching Pokemon and the routes endpoint filters out routes with no matching encounters, so only eligible locations appear. Type picker UI in RulesConfiguration; active restriction shown in RuleBadges. Backend accepts allowed_types query param and joins through RouteEncounter.pokemon to filter by type. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>