Add AI-powered nutrition and plan modules

Introduces DSPy-based nutrition and plan generation modules, including image analysis for nutritional info and personalized diet/exercise plans. Adds new API endpoints for health metrics/goals, nutrition image analysis, and plan management. Updates models, schemas, and backend structure to support these features, and includes initial training data and configuration for prompt optimization.

backend/app/api/v1/endpoints/login.py

@@ -1,35 +1,34 @@
 from datetime import timedelta
 from typing import Any
+
 from fastapi import APIRouter, Depends, HTTPException
 from fastapi.security import OAuth2PasswordRequestForm
 from sqlmodel import Session, select
 
 from app.api import deps
-from app.core import security
 from app.config import settings
+from app.core import security
 from app.models.user import User
 from app.schemas.token import Token
 
 router = APIRouter()
 
+
 @router.post("/login/access-token", response_model=Token)
 def login_access_token(
-    session: Session = Depends(deps.get_session),
-    form_data: OAuth2PasswordRequestForm = Depends()
+    session: Session = Depends(deps.get_session), form_data: OAuth2PasswordRequestForm = Depends()
 ) -> Any:
     """
     OAuth2 compatible token login, get an access token for future requests
     """
     statement = select(User).where(User.email == form_data.username)
     user = session.exec(statement).first()
-    
+
     if not user or not security.verify_password(form_data.password, user.password_hash):
         raise HTTPException(status_code=400, detail="Incorrect email or password")
-    
+
     access_token_expires = timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
     return {
-        "access_token": security.create_access_token(
-            user.id, expires_delta=access_token_expires
-        ),
+        "access_token": security.create_access_token(user.id, expires_delta=access_token_expires),
         "token_type": "bearer",
     }