🎨 Palette: Format game scores with thousands separator and add previous personal best context

[aidasofialily-cmd]

🎨 Palette: Improved score readability and personal best feedback in Speed Clicker

💡 What

• Introduced formatWithCommas helper in src/utils.hpp to format large numeric scores with thousands separator commas.
• Integrated the formatting throughout the interface: Personal Best display, HUD Score & High displays, and final game results.
• Enhanced the "New Personal Best" game loop feedback to include the previous high score context (e.g. NEW BEST! ✨🥳 (was 1,000)) highlighted with Bold Yellow (CLR_CTRL) to maximize visual excitement.
• Ensured inclusivity by showing high scores and new personal best feedback immediately to first-time players who start with 0.

🎯 Why

• Reading dense, unformatted numbers in real-time CLI clicker games is challenging. Adding comma separators significantly improves cognitive processing and readability.
• Showing previous high score milestones alongside active record-breaking achievements adds immediate context, highlighting the player's progress and enhancing gratification.
• Providing high score visibility and milestone celebrations on the first point scored ensures a highly welcoming and inclusive first-time player UX.

♿ Accessibility

• Improved readability of visual HUD text by using high-contrast bold color macros (CLR_CTRL) on critical milestones.
• Standardized thousands-separators formatting for better numerical comprehension.

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PR created automatically by Jules for task 1543712994826791344 started by @aidasofialily-cmd

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