I need Stripe wired into my mobile app so users can complete secure, one-time purchases without leaving the experience. The core requirement is straightforward: set up Stripe’s payment processing flow with the mobile SDK, handle tokenisation on the client, then finalise the charge server-side. No subscriptions or vendor payouts are in scope—just clean, reliable one-off transactions. You’ll receive access to our Git repository and a test account on Stripe. I’m expecting fully working code, clear setup notes, and proof of a successful test payment running in both sandbox and live modes. If you can add sensible error handling and basic logging along the way, even better.