🏓 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/match.py

@@ -0,0 +1,73 @@
+from sqlalchemy import Column, Integer, ForeignKey, DateTime, Float, String, Enum, Boolean, JSON
+from sqlalchemy.orm import relationship
+from sqlalchemy.sql import func
+from app.database import Base
+import enum
+
+
+class MatchStage(str, enum.Enum):
+    OPEN = "open"
+    SKILL_BASED = "skill_based"
+    TOURNAMENT = "tournament"
+
+
+class MatchStatus(str, enum.Enum):
+    LOBBY = "lobby"
+    IN_PROGRESS = "in_progress"
+    COMPLETED = "completed"
+    CANCELLED = "cancelled"
+
+
+class MatchType(str, enum.Enum):
+    SINGLES = "singles"
+    DOUBLES = "doubles"
+
+
+class Match(Base):
+    __tablename__ = "matches"
+
+    id = Column(Integer, primary_key=True, index=True)
+    court_id = Column(Integer, ForeignKey("courts.id"), nullable=True)
+    stage = Column(Enum(MatchStage), default=MatchStage.OPEN)
+    match_type = Column(Enum(MatchType), default=MatchType.DOUBLES)
+    status = Column(Enum(MatchStatus), default=MatchStatus.LOBBY)
+
+    # Scores
+    team1_score = Column(Integer, default=0)
+    team2_score = Column(Integer, default=0)
+    team1_games = Column(Integer, default=0)
+    team2_games = Column(Integer, default=0)
+
+    # Game details
+    max_players = Column(Integer, default=4)
+    min_elo = Column(Float, nullable=True)
+    max_elo = Column(Float, nullable=True)
+
+    # Match metadata
+    title = Column(String(200))
+    started_at = Column(DateTime(timezone=True), nullable=True)
+    ended_at = Column(DateTime(timezone=True), nullable=True)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())
+
+    # Relationships
+    court = relationship("Court", back_populates="matches")
+    match_players = relationship("MatchPlayer", back_populates="match", cascade="all, delete-orphan")
+
+
+class MatchPlayer(Base):
+    __tablename__ = "match_players"
+
+    id = Column(Integer, primary_key=True, index=True)
+    match_id = Column(Integer, ForeignKey("matches.id"), nullable=False)
+    player_id = Column(Integer, ForeignKey("players.id"), nullable=False)
+    team = Column(Integer, nullable=False)  # 1 or 2
+    elo_before = Column(Float, nullable=True)
+    elo_after = Column(Float, nullable=True)
+    elo_change = Column(Float, default=0.0)
+    is_winner = Column(Boolean, nullable=True)
+    joined_at = Column(DateTime(timezone=True), server_default=func.now())
+
+    # Relationships
+    match = relationship("Match", back_populates="match_players")
+    player = relationship("Player", back_populates="match_players")