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/schemas/token.py

@@ -0,0 +1,9 @@
+from typing import Optional
+from sqlmodel import SQLModel
+
+class Token(SQLModel):
+    access_token: str
+    token_type: str
+
+class TokenPayload(SQLModel):
+    sub: Optional[str] = None