🎨 Palette: Add help tooltips to financial parameters

[aarjava]

💡 What:

Added descriptive help tooltips to various statistical and financial parameter inputs (e.g., "Factor Beta Window", "Transaction Cost (bps)", "Volatility Alert") in the src/dashboard.py sidebar.

🎯 Why:

To provide immediate context to non-expert users regarding the expected inputs and units (like basis points or percentiles) without cluttering the UI. This reduces data entry errors and makes the application more accessible.

♿ Accessibility / UX:

• Implemented using Streamlit's native help parameter to ensure tooltips integrate cleanly with the existing design system.
• Standardized tooltips for financial inputs to explicitly include concrete examples (e.g., 10 bps = 0.10%) as established in the new UX learning journal entry.

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PR created automatically by Jules for task 18100481024317072176 started by @aarjava

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