hanime: play through a redirect proxy; the signed stream links expire

Items now carry /proxy/hanime/{slug}/{height}.m3u8, which does a fresh
handshake per play and 302s to the current playlist. The handshake moved
to util/hanime_resolve.rs so single-provider builds keep the route.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MUYdCh2nCVsQYgJAT7gwSi

src/proxies/mod.rs

@@ -26,6 +26,7 @@ pub mod clapdat;
 pub mod doodstream;
 pub mod eporner;
 pub mod fikfapthumb;
+pub mod hanime;
 pub mod hanimecdn;
 pub mod hanimethumb;
 pub mod heavyfetish;