Finalize Sci-Fi UI demo with six commits: structure, styles, scripts, assets, README, and CI

[Copilot]

Overview

This PR finalizes the Sci-Fi UI demo implementation with six focused commits implementing structure, styles, scripts, asset cleanup, documentation, and CI enhancements. The demo showcases three fully functional, accessible sci-fi themes: LCARS (Star Trek), Star Wars, and Cyberpunk.

Demo Screenshots

LCARS Theme (Star Trek) - Orange/amber panels with rounded LCARS aesthetic

Star Wars Theme - Cyan holographic HUD with animated grid overlay

Cyberpunk Theme - Magenta/yellow neon with glitch effects

Changes Made

1. Structure - Placeholder SVG Assets

• Created lcars-panels.svg with original LCARS-style panel designs using gradients and rounded rectangles
• Created hologram-activation.svg with holographic effect design featuring scan lines and corner markers
• All assets are original geometric designs with no trademarked or copyrighted content

2. Styles - CSS Refinements and Accessibility

• Added :focus-visible styles with ≥2px outlines for keyboard navigation accessibility
• Set initial state for .progress .bar with transition: none and width: 0 as specified
• Added theme-specific progress bar gradients matching exact color specifications:
  • LCARS: linear-gradient(90deg, #FF9A3C, #FFD79A)
  • Star Wars: linear-gradient(90deg, rgba(46,230,255,0.12), rgba(144,240,255,0.06))
  • Cyberpunk: linear-gradient(90deg, var(--cyan), #8c2eff)
• Implemented lcars-sheen animation (1.6s linear infinite)
• Renamed hud-dash to sw-grid animation (2s linear infinite) for consistency
• Added commented font preload tags in index.html for future licensed fonts

3. Scripts - Enhanced Accessibility and Behavior

• Updated preloader container with role="status" and aria-live="polite" for screen reader announcements
• Added loader-sample visibility toggling in theme-switcher.js to show/hide theme-specific elements
• Existing scripts already handle resource preloading, event dispatching, and reduced motion preferences

4. Assets - License Compliance

• Removed enterprise.svg containing unlicensed Star Trek intellectual property (USS Enterprise NCC-1701)
• Verified all remaining SVG assets are original placeholder designs
• All .gitkeep files maintained for empty asset directories (fonts, images, audio)

5. README - Documentation Updates

• Added Core Web Vitals metric thresholds to Lighthouse CI section:
  • LCP (Largest Contentful Paint): < 2.5s
  • CLS (Cumulative Layout Shift): < 0.10
  • TTFB (Time to First Byte): < 600ms
• Existing comprehensive documentation covers Pages setup, asset licensing, local development, and acceptance criteria

6. CI - Lighthouse Thresholds and Deployment Notes

• Enhanced lighthouserc.json with specific metric assertions:
  • largest-contentful-paint: max 2500ms
  • cumulative-layout-shift: max 0.1
  • server-response-time: max 600ms
• Added deployment confirmation step in .github/workflows/ci.yml that runs on merge to main/master
• Existing LHCI_GITHUB_APP_TOKEN configuration handles automated PR comment posting

GitHub Pages Deployment

Configuration:

• Source: main branch → /docs folder
• Demo URL: https://hutoczky.github.io/FormatX/scifi-ui/
• Root redirect at /docs/index.html forwards to scifi-ui/

Asset License Status

✅ All assets are original placeholders (SVG)
✅ No unlicensed intellectual property used
✅ Fonts use system font stacks (Segoe UI, system-ui, etc.)
✅ Font preload tags commented in HTML until licensed fonts are acquired
✅ Complete asset inventory documented in README

Accessibility Features

• Progressive Enhancement: Base functionality works without JavaScript (LCARS theme active by default)
• Keyboard Navigation: Full keyboard support with Enter/Space on theme buttons
• ARIA Attributes: role="status", aria-live="polite", aria-pressed, aria-selected on interactive elements
• Focus Indicators: High-contrast ≥2px focus outlines on all interactive elements
• Reduced Motion: Respects prefers-reduced-motion with simplified animations
• Screen Reader Support: Semantic HTML with descriptive labels

Performance Optimizations

• Critical CSS inlined in <style> tag for faster LCP
• Resource preloading for CSS files
• SVG assets optimized and minimal
• System font stacks avoid external font loading
• CSS animations use transform and opacity for GPU acceleration

Testing Performed

✅ JavaScript syntax validation (all files pass)
✅ HTTP server test (returns 200 OK)
✅ All three themes load and switch correctly
✅ Theme persistence via localStorage verified
✅ Focus styles visible with keyboard navigation
✅ Reduced motion media query respected
✅ ARIA attributes properly set

Acceptance Checklist

• Demo accessible from /docs with redirect
• Complete directory structure with .gitkeep files
• Live theme switching (LCARS/Star Wars/Cyberpunk)
• Theme persistence via localStorage
• Accessible preloader with progress indication
• Reduced motion support
• Lighthouse CI thresholds configured
• No unlicensed IP used
• Complete documentation

Related Issues

This PR supersedes PR #38 and completes the work outlined in PR #39.

Original prompt

Finalize the Sci‑Fi UI demo work in PR #39 by pushing the six commits (structure → styles → scripts → assets placeholders → README → CI) as specified previously, update the PR description (Pages setup main → /docs; asset license status), mark the PR ready for review, wait for CI to pass (Lighthouse thresholds: LCP < 2.5s, CLS < 0.10, TTFB < 600ms), then merge the PR to publish GitHub Pages at https://hutoczky.github.io/FormatX/scifi-ui/. After merge, close PR #38 as superseded. Reference images: .

This pull request was created as a result of the following prompt from Copilot chat.

Finalize the Sci‑Fi UI demo work in PR #39 by pushing the six commits (structure → styles → scripts → assets placeholders → README → CI) as specified previously, update the PR description (Pages setup main → /docs; asset license status), mark the PR ready for review, wait for CI to pass (Lighthouse thresholds: LCP < 2.5s, CLS < 0.10, TTFB < 600ms), then merge the PR to publish GitHub Pages at https://hutoczky.github.io/FormatX/scifi-ui/. After merge, close PR #38 as superseded. Reference images: .

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