🎨 Palette: Interactive Tutorial Mode & Brand Unification

[rtech-technologies]

This PR introduces a micro-UX enhancement designed to make the RTECH OS*2 infrastructure more accessible and intuitive for users.

🎨 Palette: Interactive Tutorial Mode

💡 What:
Implemented a lightweight "Tutorial Mode" in os2.html that can be toggled via the navigation bar. When active, it highlights technical concepts like "One Line Logic" and "Pure Metal" with industrial-style annotations.

🎯 Why:
The OS architecture is highly technical. A guided mode allows users to explore the "sovereign industrial" aesthetic while understanding the underlying philosophy without cluttering the default UI.

♿ Accessibility:

• Added aria-label and aria-pressed to the toggle button.
• Ensured high-contrast focus indicators using the brand's Lime-500 color.
• Used semantic HTML with proper contrast ratios for Zinc-400 text on black.

✨ Visual Polish:

• Unified the RTECH logo with a terminal-style blinking cursor effect across all pages.
• Standardized navigation link behavior to prevent layout shifts on hover.
• Recorded UX patterns and learnings in .jules/palette.md.

All changes were verified using Playwright and visually inspected via screenshots.

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PR created automatically by Jules for task 6362861338344626399 started by @rtech-technologies

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