Function get_current_user 

pub async fn get_current_user(
    __arg0: Extension<FilteredUser>,
) -> Result<impl IntoResponse, (StatusCode, Json<Value>)>

Retrieves the currently authenticated user’s information.

Uses the FilteredUser data embedded in the JWT token (via middleware). Useful for frontends to display logged-in user info or verify authentication.

Returns

• 200 OK with FilteredUser data (excluding password)
• Automatically returns 401 Unauthorized if not authenticated (middleware)

Example Response

{
  "status": "success",
  "data": {
    "id": 1,
    "first_name": "Admin",
    "last_name": "User",
    "is_admin": true
  }
}