_eg_httpd_ref.nx

_eg_httpd_ref.nx -- HAND REFERENCE (written ONCE, scratch) for the PROOF-2 daemon-class target. This is the byte-identical TARGET the generalized walker (nx_eg) must reproduce from a STRUCTURAL spec. It is NOT a constant-variant of nx_eoe's nested-counting-loop shape: its control flow is a real socket->bind->listen->`while accept`->`if cfd<0 continue`->fork->flat-if route dispatch->send, modeled on the live daemons nx_http_server.nx (listen/accept) + nx_sites_daemon.nx (accept/fork/flat-if). Plain NishiLang nx_cc compiles today; loopback bind on a chosen port; GET /health -> 200, default 404. Dialect rails honored: flat-ifs only (LM-002, no else-if chaining), no &&/|| (LM-001), mask-after-shift for the port bytes (LM-005). license_tier: ORIGINAL