feature/entra id authentication added

backend/app/config.py

@@ -25,6 +25,17 @@ class Settings(BaseSettings):
     RATE_LIMIT_REQUESTS: int = 10
     RATE_LIMIT_WINDOW: int = 60
 
+    # Microsoft Entra ID
+    ENTRA_TENANT_ID: Optional[str] = None
+    ENTRA_CLIENT_ID: Optional[str] = None
+    ENTRA_CLIENT_SECRET: Optional[str] = None
+    ENTRA_REDIRECT_URI: str = "http://localhost:3000/auth/callback"
+
+    # JWT
+    JWT_SECRET: str = "change-this-in-production-use-a-secure-random-string"
+    JWT_ALGORITHM: str = "HS256"
+    JWT_EXPIRY_HOURS: int = 24
+
     class Config:
         env_file = ".env"
         case_sensitive = True