Base Issue: Syncing Features from `psnawp` to `psn-api`

This issue will serve as the base tracker for syncing and migrating missing features from [`isFakeAccount/psnawp`](https://github.com/isFakeAccount/psnawp) to [`achievements-app/psn-api`](https://github.com/achievements-app/psn-api).

The [`psnawp`](https://github.com/isFakeAccount/psnawp) repository by [@isFakeAccount](https://github.com/isFakeAccount) is undoubtedly the most complete and well-maintained PSN API library. The goal is to bring `psn-api` up to date by identifying and implementing these functionalities.

As the work progresses, related issues and pull requests will be linked here.

This is a meta base tracker with no files, tests, or code entry points named. Start by reading this thread and checking for linked follow-up issues/PRs, then scan the psn-api issue list to identify specific missing features. Since none are linked yet, the first concrete step is to split one migration need into an actionable child issue with clear scope. It is done when this ticket points to concrete child tickets/PRs instead of a vague migration goal.

Scritto dal modello di indicizzazione a partire dal testo della issue.