v1.6.0: Premium landing page redesign + missing files

index.html:
- Complete rebuild with premium UI/UX (no emojis, all SVG icons)
- Live interactive API console with preset endpoints and JSON viewer
- Canvas particle system (60 particles, purple-tinted)
- Scroll-reveal animations via IntersectionObserver
- Animated stat counters on viewport entry
- Infinite scrolling marquee with SVG icons
- Endpoint explorer with sidebar nav, multi-language code tabs (cURL/JS/Python)
- 4 interactive playground cards
- Glassmorphism sticky header with scroll-aware blur
- Full 4-column footer

404.html:
- Glitch animation effect on 404 code
- CRT scanline overlay
- SVG icons throughout

New files:
- manifest.json (PWA: theme color, icons, display)
- robots.txt (crawler directives + sitemap)
- sitemap.xml (4 pages)
- og-image.svg (gradient design with title)
- privacy.html (data collection, DMCA, third-party)
- tos.html (acceptable use, rate limits, liability, DMCA)

public/sitemap.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>https://anikato.vercel.app/</loc>
+    <lastmod>2026-06-08</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>1.0</priority>
+  </url>
+  <url>
+    <loc>https://anikato.vercel.app/api</loc>
+    <lastmod>2026-06-08</lastmod>
+    <changefreq>daily</changefreq>
+    <priority>0.9</priority>
+  </url>
+  <url>
+    <loc>https://anikato.vercel.app/privacy.html</loc>
+    <lastmod>2026-06-08</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.3</priority>
+  </url>
+  <url>
+    <loc>https://anikato.vercel.app/tos.html</loc>
+    <lastmod>2026-06-08</lastmod>
+    <changefreq>monthly</changefreq>
+    <priority>0.3</priority>
+  </url>
+</urlset>