Add POST endpoint for /logout

endpoints/logout.post.py

@@ -0,0 +1,31 @@
+# Entity: Auth
+
+```python
+from fastapi import APIRouter, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from core.database import get_db
+from sqlalchemy.orm import Session
+from models.auth import Auth
+from schemas.auth import AuthResponse
+
+router = APIRouter()
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
+
+@router.post("/logout", status_code=200, response_model=AuthResponse)
+async def logout(
+    token: str = Depends(oauth2_scheme),
+    db: Session = Depends(get_db)
+):
+    """Logout user and invalidate token"""
+    auth = db.query(Auth).filter(Auth.token == token).first()
+    if not auth:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid token"
+        )
+    
+    db.delete(auth)
+    db.commit()
+    
+    return {"message": "Successfully logged out"}
+```