🎨 Palette: CLI Visual Polish & Documentation Fix

[google-labs-jules]

This PR improves the UX of the Bitcoin Trading Simulation by:

1. Correcting Documentation: The README incorrectly stated the project was C++. It is now accurate and includes quick start instructions.
2. Visual Polish: The CLI output now uses ANSI colors (Green/Red/Purple) and emojis to clearly distinguish Buy/Sell actions and Profit/Loss status, reducing cognitive load.
3. Dependency Management: Added requirements.txt for easier setup.

No logic changes were made to the simulation strategy.

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PR created automatically by Jules for task 10943798974428900889 started by @EiJackGH

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