Release v0.2.35

HTTP/1.1 + static-serving conformance:
- RFC 9112 §3.2 Host enforcement: HTTP/1.1 without Host -> 400 (1.0 exempt).
- StaticServingConformanceTest: traversal corpus confined to docroot, dotfiles
  never served, autoindex off, MIME + conditional 304.
- Host-rule + response-splitting (header() CR/LF/NUL) conformance.
- STANDARDS.md request-line/Host/static matrix + OpenSwoole deviation register.