Allow users to delete their account from settings

We are adding a feature that enables users to permanently delete their account directly from the settings page. This will allow users to have full control over their data, while ensuring that teams remain intact unless the last user deletes their account.

🔹 Why?

• Improves user autonomy by allowing account deletion without manual support.

• Ensures compliance with data privacy best practices.

• Prevents accidental team deletions, preserving team data when applicable.

• Strengthens backend security by implementing rigorous deletion safeguards.

🔹 How it works?

• A “Delete Account” button is added in Settings.

• Users confirm deletion through a multi-step process (e.g., password confirmation).

• If the user is not the last member of a team, only their account is deleted.

• If the user is the last member, the team is also removed.

• A backend process ensures safe deletion and removes all personal data.

• Automated tests are implemented to verify that:

• Only the user’s account is deleted.

• Teams are not mistakenly removed if other users exist.

• Database integrity is preserved, preventing orphaned records.