Theme Wipe Specialization and Visual Fixes

[TimChinye]

This change optimizes the theme transition experience by specializing the snapshot strategy based on the page type and fixing several visual regressions.

Key improvements:

• Strict Route Targeting: Puppeteer is now exclusively used for high-impact landing pages (home and projects). All other pages (about, contact, single projects) skip the Puppeteer delay and use modern-screenshot or instant switching.
• Visual Fidelity & Coverage: Resolved the "gap" at the bottom of the screen by ensuring snapshots use 100% 100% scaling in the overlay and window.innerWidth for capture, encompassing the entire viewport including scrollbar tracks.
• Refined Animation: The wipe divider line is now perfectly centered on the transition edge using translate: 0 -50% and percentage-based vertical movement, ensuring it matches the container bounds regardless of viewport size.
• Flicker-Free Transitions: Moved the initial mask capture to the very start of the transition. This creates an immediate visual lock of the current page state, masking any background theme changes or React re-renders until the wipe animation is ready to start.
• Cleanup: Removed the scrollbar-gutter hack as requested, and improved the DOM serializer to fully remove excluded elements (data-html2canvas-ignore, scripts, etc.) from the payload, reducing snapshot API overhead.

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PR created automatically by Jules for task 16427792831135789730 started by @TimChinye

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Project	Deployment	Actions	Updated (UTC)
portfolio	Error		Mar 5, 2026 9:48am