Human-Like Rapid Purchase Automation Tool

I need a coded solution that can secure large quantities of stock on general-retail e-commerce sites the instant the items go live, yet leave a trace that looks exactly like a real shopper. At the scheduled release time the tool must locate the product automatically, add the desired quantity to cart, and submit the order in a fraction of a second while still mimicking natural browsing behaviour—randomised mouse moves, keystroke timing, realistic HTTP headers, and other anti-bot counter-measures.

You are free to choose the most reliable stack (Python + Playwright/Selenium, JavaScript headless browser, or a lightweight direct-request approach) so long as it:

• Performs automated product search and carting based on SKU or keyword the moment stock appears
• Maintains human-like interaction patterns to avoid captchas, rate limits, and bot flags
• Provides a clear way for me to input schedule, size and maximum quantity, details beforehand
• Returns logs so I can verify each attempt

Please outline your proposed architecture, latency expectations measured in milliseconds, and any safeguards you will include against website changes.