🎨 Palette: Improve readability of CLI logs with thousands separators

[EiJackGH]

💡 What

Added thousands separators (e.g., :,.2f and :,.4f) to the monetary and Bitcoin values printed in the daily trading ledger loop inside bitcoin_trading_simulation.py.

🎯 Why

When running the simulation, the daily ledger output can become difficult to parse at a glance, especially when dealing with large cash reserves or fractional Bitcoin values. Adding thousands separators significantly reduces cognitive load and improves readability.

📸 Before/After

Before:
Day 14: Portfolio Value: $10947.56, Cash: $10947.56, BTC: 0.1912
🟢 Day 14: Buy 0.1912 BTC at $52300.41

After:
Day 14: Portfolio Value: $10,947.56, Cash: $10,947.56, BTC: 0.1912
🟢 Day 14: Buy 0.1912 BTC at $52,300.41

♿ Accessibility

While primarily a visual polish feature, structured numbers make parsing the console output much more accessible for users scanning large amounts of text.

(Note: Also removed venv from requirements.txt to fix pip installation errors.)

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PR created automatically by Jules for task 13599965910295318160 started by @EiJackGH

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