Roblox Slot Sniping Auto-Joiner

I want a small, reliable tool that watches any popular Roblox game I specify and jumps in the moment a player slot frees up. The flow is simple: I paste the game link or ID, log in with my security cookie, hit start, and the program sits in the background until a space appears, then joins instantly—no prompts, no delays.

Core requirements
• Targets popular public servers (not private or friend-only games).
• Polls the server list rapidly yet safely to avoid rate limits.
• Fires the join request the very first millisecond a slot opens.
• Runs on Windows; a cross-platform solution is a bonus.
• Accepts my .ROBLOSECURITY cookie securely (env var or encrypted file).
• Clean output in the console or a minimal GUI showing status and recent attempts.

Tech is flexible—Python with requests & websockets, Node.js, or a lightweight compiled language are all fine as long as latency stays low. Please include all source code, a short README, and a quick video or live demo proving it can slip into a full server within a realistic timeframe.