YT/Ins Full Reverse Proxy + API

API Endpoints:
  /api/trending?region=US   → YouTube Trending videos (JSON)
  /api/search?q=query       → YouTube Search (JSON)

Web Routes:
  /yt/*      → www.youtube.com
  /ytimg/*   → i.ytimg.com
  /ytapi/*   → www.googleapis.com
  /ins/*     → www.instagram.com
  /insapi/*  → i.instagram.com
  /inscdn/*  → cdninstagram.com