I already have a functional Amazon A-to-Z shift-grabber, but it only works reliably when the window stays in the foreground and its reaction time is too slow to beat other workers. I’d like you to overhaul the code so it can operate unseen in the background and lock in blocks at the very first moment they appear. Performance upgrade • Cut response time to the absolute minimum—ideally within the same second a shift is posted. • Streamline the logic or API calls so the tool stays stable even when Amazon’s listings spike; no freezing or missed updates. New functionality • Build an automated selection engine: after I set rules such as station, day of week, start/end hours, or minimum pay, the script should claim any matching shift automatically without further input. Acceptance criteria 1. A demo showing the grabber running head-less or minimized while another app is in focus, still securing test shifts faster than the current version. 2. A configuration file or simple UI where I can edit my preference rules. 3. Clear, well-commented source and a brief README so I can tweak it later. Whatever language or framework the existing code uses is fine—as long as the upgrade is clean, efficient, and future-proof.