Initial commit: full fitness-rewards app

Backend: FastAPI + PostgreSQL + SQLAlchemy async
- Auth (JWT), onboarding (PAR-Q+, TTM, BREQ-2), activities, food log
- Points engine with daily gate + weekly targets
- Strava + Polar OAuth integration
- Open Food Facts barcode lookup
- Resource recommendation engine
- 10 seeded Darebee/StrongLifts/YouTube programs

Frontend: React + Vite, mobile-first dark theme
- Login/Register, 8-step onboarding flow
- Dashboard with daily gate status
- Activity logger, food logger (manual + barcode scan + search)
- Reward shop with redemption
- Weekly summary view
- Settings (point rules, targets, integrations)

Deployment: Docker Compose for Coolify (Traefik)

backend/app/models/user.py

@@ -0,0 +1,25 @@
+import uuid
+from datetime import datetime, timezone
+from sqlalchemy import String, Boolean, DateTime
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from sqlalchemy.dialects.postgresql import UUID
+from app.database import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    username: Mapped[str] = mapped_column(String(50), unique=True, nullable=False)
+    display_name: Mapped[str] = mapped_column(String(100), nullable=False)
+    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
+    email: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
+    timezone: Mapped[str] = mapped_column(String(50), default="Asia/Bangkok")
+
+    # Relationships
+    profile: Mapped["UserProfile"] = relationship(back_populates="user", uselist=False, lazy="selectin")
+    programs: Mapped[list["Program"]] = relationship(back_populates="user", lazy="selectin")
+    point_rules: Mapped[list["PointRule"]] = relationship(back_populates="user", lazy="selectin")
+    rewards: Mapped[list["Reward"]] = relationship(back_populates="user", lazy="selectin")