Orca Adds Usage Tracking, Account Switching

This is a practical quality-of-life upgrade that turns subscription juggling into a manageable developer workflow.

• –Usage tracking covers active accounts and multiple reset windows.
• –Account switching avoids repeated logins and configuration edits.
• –New sessions use the selected account; existing sessions retain their original credentials.
• –Usage data is primarily read from local agent state, so it may not be fully real-time.
• –The feature strengthens Orca’s position as a control plane for multi-agent development.