* add leaderboard stats, periodic update via fastapi-utils
* count label tasks for assistant and prompter replies
* Daily stats update every 15 mins, simplify leaderboard endpoint
* add indices for some created_date columns
* make user stats update intervals configurable
* make sure intervals are positive
* Implement label task for initial prompts and replies
* Resolve formatting
* Include missing argument
* Modify text_labels API to match new model, update DB schema accordingly
* Send valid labels as part of label tasks
* Send correctly formatted valid_labels list
* Fix request format
* Fix request details for text-frontend reply label task
* Include message_id in tasks
* Address review comments
* Fix alembic tree
Andreas Köpf