feat: add CourtSession model and isOpenPlay field to Court

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/prisma/schema.prisma

@@ -144,13 +144,15 @@ model Court {
   description String?
   features    String[]    @default([])
   displayOrder Int        @default(0)
+  isOpenPlay  Boolean     @default(false)
   isActive    Boolean     @default(true)
   createdAt   DateTime    @default(now())
   updatedAt   DateTime    @updatedAt
 
-  site     Site      @relation(fields: [siteId], references: [id], onDelete: Cascade)
+  site     Site           @relation(fields: [siteId], references: [id], onDelete: Cascade)
   bookings Booking[]
   matches  Match[]
+  sessions CourtSession[]
 
   @@index([siteId])
   @@index([status])
@@ -215,6 +217,7 @@ model Client {
   payments      Payment[]
   sales         Sale[]
   inscriptions  TournamentInscription[]
+  courtSessions CourtSession[]
 
   @@unique([organizationId, email])
   @@unique([organizationId, dni])
@@ -544,3 +547,28 @@ model Match {
   @@index([round, position])
   @@index([scheduledAt])
 }
+
+// =============================================================================
+// COURT SESSIONS (Live Player Tracking)
+// =============================================================================
+
+model CourtSession {
+  id         String    @id @default(cuid())
+  courtId    String
+  clientId   String?
+  walkInName String?
+  startTime  DateTime  @default(now())
+  endTime    DateTime?
+  isActive   Boolean   @default(true)
+  notes      String?
+  createdAt  DateTime  @default(now())
+  updatedAt  DateTime  @updatedAt
+
+  court  Court   @relation(fields: [courtId], references: [id], onDelete: Cascade)
+  client Client? @relation(fields: [clientId], references: [id], onDelete: SetNull)
+
+  @@index([courtId])
+  @@index([clientId])
+  @@index([isActive])
+  @@index([startTime])
+}