v1.3.0: Full landing page upgrade + feature parity with AniKotoAPI

- Full index.html rewrite with AniKotoAPI-style features:
  * Canvas particle effects (cyan particles)
  * Scroll-reveal animations (IntersectionObserver)
  * Animated stat counters (count up on scroll)
  * Infinite scrolling marquee (8 feature badges)
  * Live interactive API console (5 presets: Search, Trending, Episodes, Info, Health)
  * Sidebar endpoint explorer (16 endpoints, multi-language tabs: cURL/JS/Python)
  * 4 interactive playground cards (Search, Info, Episodes, Trending)
  * Custom scrollbar, JetBrains Mono font
  * 4-column grid footer with API/Resources/Legal
  * Fixed header with scroll-aware glass blur
  * Ambient orb gradient animations
  * CTA section with gradient overlay
- Added public/404.html (glitch animation error page)
- Added public/manifest.json (PWA, theme: #38bdf8)
- Added public/robots.txt (Allow /, Disallow /api)
- Added public/sitemap.xml (4 URLs)
- Added public/tos.html (13 sections)
- Added public/privacy.html (8 sections)
- Added .env.example, CONTRIBUTING.md, LICENSE, render.yaml, test.js
- Added docs/ (5 files: index, endpoints, streaming, examples, architecture)
- Updated server.js: clean URL routes (/tos, /privacy), 404.html fallback
- Updated package.json: devDependencies nodemon, repository, dev script
- All branding: AniKotoAPI → MiruroAPI, cyan color scheme (#38bdf8)

public/robots.txt

@@ -0,0 +1,6 @@
+# MiruroAPI — https://mirurotvapi.vercel.app
+User-agent: *
+Allow: /
+Disallow: /api
+
+Sitemap: https://mirurotvapi.vercel.app/sitemap.xml