Handle 401 case for getting orders

[JohnPhamous]

No description provided.

[greptile-apps]

PR Summary

Enhanced error handling for unauthorized access in the orders command, focusing on session expiration and user feedback.

• Added 401 response handling in src/lib/orders/index.tsx to properly handle expired sessions
• Optimized error message variables in src/helpers/errors.ts by moving base and loginCommand outside function scope
• Improved error message consistency by updating session expired message format to match login message style
• Added clear user guidance by prompting re-login when session expires during order fetching

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