🎨 Palette: Add tooltips with concrete examples to complex financial inputs

[aarjava]

💡 What: Added explicitly formatted help tooltips to the "High Volatility Quantile" slider and the "Transaction Cost (bps)" number input in the Streamlit sidebar.
🎯 Why: Users can easily misinterpret abstract financial or statistical parameters like "basis points" or "quantiles". Including concrete examples (e.g., "10 bps = 0.10%") acts as a preventative UX measure to ensure clarity and avoid input errors.
📸 Before/After: Visual confirmation via screenshot shows tooltips correctly attached to their respective UI labels, readable on hover.
♿ Accessibility: Improved cognitive accessibility by defining industry jargon in plain text within the application context.

Also included a new journal entry documenting this UX pattern for future statistical interfaces.

---

PR created automatically by Jules for task 10829324149170290859 started by @aarjava

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.