SNI-rewrite tunnels (src/proxy_server.rs):
- CONNECT to youtube.com / googlevideo.com / doubleclick / etc. now bypasses
the Apps Script relay entirely and goes direct to the Google edge IP
with SNI=front_domain.
- Accepts browser TLS with our MITM cert, opens outbound TLS to
config.google_ip with SNI=config.front_domain, bridges decrypted bytes.
- Matches Python's _do_sni_rewrite_tunnel behavior. Faster than relay for
large streams (video).
- Also respects config.hosts override map (custom IP per suffix).
gzip decode fix (src/domain_fronter.rs):
- Apps Script outer response is gzipped. Previous stub always failed,
causing 'non-utf8 json' errors. Swapped in flate2::GzDecoder.
- Verified end-to-end: HTTP and HTTPS requests through apps_script
relay succeed and return real Google IPs.