Redesign tips display on home screen

[iamdavidhill]

Summary

• Redesign the "Did you know" tips on the home screen to appear centered below the input instead of in a bordered box in the corner
• Simplify tip styling: renamed to "Tip", removed border, made inline with yellow bullet indicator Changes

Layout:

• Moved tips from bottom-right corner to below the input field
• Tips are now centered and constrained to the same max-width as the input (75 chars)
• "Hide tips" shortcut remains in the bottom-right corner

Styling:

• Changed title from "Did you know?" to "Tip"
• Removed decorative border around tips
• Added yellow bullet indicator (●) before "Tip" label
• Text wraps with hanging indent so wrapped lines align with tip content

Content:

• Removed trailing periods from all tips
• Shortened tips that exceeded 70 characters to ensure they fit on narrow screens