Improve interaction count formatting with consistent rounding

[tohu-sand]

Summary

• Improved interaction count formatting to match Twitter's native display behavior

Why

• Twitter's native interface uses floor-based rounding (truncation) for interaction counts, not standard rounding
• The previous implementation used standard rounding which didn't match Twitter's actual behavior
• For example, Twitter displays 17,609 as "17K", not "18K"

Files Changed

• script.js

Examples

• 17,609: "18K" → "17K" (matches Twitter's native display)
• 9,999: "9,999" (unchanged)

[tohu-sand]

Given this opinion, it might be better to add an option to show the full retweet and like counts instead of the abbreviated ones...