2ead86a27f
Two Windows-only bugs in run_serve_mux left the gateway hanging after READY: 1. No _setmode(_O_BINARY): the CRT collapsed CRLF inside fread() payloads (waits forever for missing bytes) and expanded LF in the READY/STAT sentinels. 2. WaitForSingleObject on an anonymous pipe is undefined (always-signaled or WAIT_FAILED) and PeekNamedPipe fails on file/console handles, so the dispatch gate never opened. New rule: idle -> block in getline (POSIX select(NULL) semantics); active -> PeekNamedPipe poll. Reproduced and verified on real Windows via MinGW cross-compile + WSL interop: old binary writes READY (with CRLF corruption) then hangs forever on a crafted SUBMIT frame; fixed binary answers DONE + STAT and exits cleanly. Linux path untouched (0 warnings, oracle-exact). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>