🏓 Initial ServeSync demo build

- FastAPI backend with PostgreSQL + Redis
- 4 core features: Registration, Courts, Matchmaking, Tournament
- Double elimination tournament with bracket visualization
- ELO-based matchmaking (Stage 1 Open, Stage 2 Skill-Based)
- Real-time WebSocket updates
- TV Screen display for courts
- Vue 3 + Tailwind CSS frontend
- Seed data: 12 players, 4 courts, active matches, tournament in progress
- Docker compose stack with Nginx reverse proxy

backend/app/models/player.py

@@ -0,0 +1,46 @@
+from sqlalchemy import Column, Integer, String, Float, DateTime, Enum, Boolean
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from app.database import Base
+import enum
+
+
+class MembershipTier(str, enum.Enum):
+    BRONZE = "bronze"
+    SILVER = "silver"
+    GOLD = "gold"
+    PLATINUM = "platinum"
+    ELITE = "elite"
+
+
+class Player(Base):
+    __tablename__ = "players"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(100), nullable=False)
+    email = Column(String(255), unique=True, nullable=False)
+    phone = Column(String(20))
+    elo_rating = Column(Float, default=1000.0)
+    membership_tier = Column(Enum(MembershipTier), default=MembershipTier.BRONZE)
+    wins = Column(Integer, default=0)
+    losses = Column(Integer, default=0)
+    total_matches = Column(Integer, default=0)
+    is_active = Column(Boolean, default=True)
+    avatar_color = Column(String(7), default="#3B82F6")
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    # Relationships
+    bookings = relationship("Booking", back_populates="player")
+    match_players = relationship("MatchPlayer", back_populates="player")
+    tournament_entries = relationship("TournamentEntry", back_populates="player")
+
+    @property
+    def win_rate(self):
+        if self.total_matches == 0:
+            return 0
+        return round(self.wins / self.total_matches * 100, 1)
+
+    @property
+    def tier_label(self):
+        return self.membership_tier.value.capitalize()