Initial project scaffolding for health tracker app

Set up backend and frontend structure for a health and fitness tracker using Python (FastAPI, SQLModel, DSPy) and React. Includes Docker and Compose configs, authentication, nutrition AI module, health/nutrition/user endpoints, database models, and basic frontend with routing and context. Enables tracking nutrition, health metrics, and user management, with architecture ready for future mobile and cloud deployment.

backend/app/api/deps.py

@@ -0,0 +1,43 @@
+from typing import Generator
+from sqlmodel import Session
+from app.db import engine
+
+from typing import Generator, Annotated
+from sqlmodel import Session, select
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import jwt, JWTError
+from pydantic import ValidationError
+
+from app.db import engine
+from app.models.user import User
+from app.core import security
+from app.config import settings
+from app.schemas.token import TokenPayload
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/login/access-token")
+
+def get_session() -> Generator[Session, None, None]:
+    with Session(engine) as session:
+        yield session
+
+SessionDep = Annotated[Session, Depends(get_session)]
+TokenDep = Annotated[str, Depends(oauth2_scheme)]
+
+def get_current_user(session: SessionDep, token: TokenDep) -> User:
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[security.ALGORITHM]
+        )
+        token_data = TokenPayload(**payload)
+    except (JWTError, ValidationError):
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Could not validate credentials",
+        )
+    user = session.get(User, int(token_data.sub))
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+    return user
+
+CurrentUser = Annotated[User, Depends(get_current_user)]