Chore: design token refinement and component fixes

[joduplessis]

Changes

🎨 Design Tokens & Theming

• Refined and normalized color tokens across light and dark themes
• Darkened overlay colors for improved contrast
• Lightened border values for a softer UI feel
• Added darker accent variants and separated dark mode accents
• Normalized color values for consistency

📐 Border Radius

• Introduced additional border radius token levels
• Refined and tuned radius values across multiple passes

🔤 Icons

• Updated icon font size and icon sizes for better visual balance

📦 Component Fixes

• Button: Fixed subtle variant colors
• Popover: Improved parented closing behavior
• Drag: Fixed correct call order with setTimeout, added valid origin/target checks, avoided waiting for positionDOMElement, and reset cache.init
• View: Optimized re-renders for better performance

🧹 Cleanup

• Removed unnecessary CSS transform
• Removed console logging
• Reduced component height values

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