🎨 Palette: Add progress bar for long simulations

[EiJackGH]

💡 What: Adds a dynamic terminal progress bar (\r) to the loop in simulate_trading when the simulation is run with --quiet enabled.
🎯 Why: Prevents the user from wondering if the process is stuck during large, long-running simulations (e.g., --days 100000).
📸 Before/After: Before, --quiet would produce 0 output until the final report. After, users see an interactive Simulating: |████...| xx.x% bar that dynamically updates over the same line without breaking non-interactive logs.
♿ Accessibility: The bar is strictly guarded by sys.stdout.isatty() to ensure it doesn't pollute standard output logs, CI/CD runners, or piped output with formatting characters. Furthermore, it cleanly wraps color codes.

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PR created automatically by Jules for task 4918668888832209885 started by @EiJackGH

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