nx_pages_static.nx

nx_pages_static.nx -- static-file serving over nx_http_server. Closes the LAST gap between today's CLI scripts and a live audit dashboard at http://localhost:PORT/audit. Composes the existing substrate: nx_path_canonicalize.nx -- CWE-22 prevention at the URL boundary nx_http_server.nx -- bind/listen/accept loop nx_http_resp.nx -- response builder sys_read_file_x86_64 -- file I/O The full live-dashboard chain (Phase 2 of NISHI_AUDIT_DASHBOARD_ ROADMAP.md) is now operational with this primitive. What this primitive provides: - nx_pages_serve_file(url_path, url_n, base_dir, base_n, ...) Reads docs/audit/index.html (or any file under base_dir) + emits an HTTP/1.1 200 response with proper Content-Type derived from extension. - MIME-type table (sealed enum + lookup): html, css, js, json, png, jpg, svg, txt, ico, plus "application/octet-stream" fallback for unknown extensions. - Sealed-enum verdict (8 states): OK / NOT_FOUND / FORBIDDEN / READ_ERR / OOM / RESPONSE_OOM / BAD_ARG / METHOD_NOT_ALLOWED. Per cardinal user-owns-every-bit: - Caller supplies base_dir; primitive never picks "well-known" paths. - Caller supplies response buffer + max size. - No implicit caching, no mmap'd inode store, no auto-index. If URL is `/`, primitive returns NOT_FOUND -- caller must explicitly route `/` to a specific file. Per cardinal feedback-defensive-at-boundaries-trusting-internally: url_path is canonicalized ONCE at entry; subsequent file-open uses the canonical path; no re-validation.