feat: add team configuration fields to Event model

Add fields for team durability, partner rotation, and configuration:
- teamDurability: permanent, variable, or per_round
- partnerRotation: none, minimize_repeat, maximize_even, elo_based
- allowByes: handle odd participant counts
- teamConfiguration: JSON for additional options
- maxRosterChanges: limit roster changes per player
- requireAdminVerify: for match score verification

Refs #22

prisma/schema.prisma

@@ -63,6 +63,7 @@ model Event {
   description     String?
   eventDate       DateTime?
   eventType       String             @default("tournament")
+  tournamentType  String             @default("individual")
   format          String             @default("round_robin")
   status          String             @default("planned")
   maxParticipants Int?
@@ -78,6 +79,14 @@ model Event {
   teams           Team[]
   rounds          TournamentRound[]
 
+  // Team configuration fields
+  teamDurability       String             @default("permanent") // permanent, variable, per_round
+  partnerRotation      String             @default("none") // none, minimize_repeat, maximize_even, elo_based
+  allowByes            Boolean            @default(true)
+  teamConfiguration    Json?              // Additional configuration options
+  maxRosterChanges     Int?               // Maximum roster changes per player
+  requireAdminVerify   Boolean            @default(false) // For match score verification
+
   @@map("events")
 }