_wiki_discovery_gate.nx

_wiki_discovery_gate.nx -- unit gate for the wiki content loader's V+1 AUTO-DISCOVERY (nx_wcl_discover_dir). NO mocks, NO HTTP daemon: drives the real loader functions against the REAL wiki content dir (/mnt/c/Users/elder/nishi-silicon), then renders a discovered page via the real nx_wiki_doc_render, then builds the real inverted index and runs a POSITIVE + NEGATIVE search control. Judged by the printed WIKIDISCOVERY marker (verdict=GREEN only if EVERY assertion holds), NOT by $? -- mirrors the gate convention in runtime/_hdl_build (e.g. _eoe_gate.nx). PROVES the V+1 TODO is closed: a new .md dropped into the content dir becomes a page + search hit with ZERO code edit, because the getdents64 walk enumerates the dir at load time. Import set mirrors the PROVEN-SAFE composition already shipping in wiki/nx_wiki_doc_handler.nx (nx_syscalls + index_builder[->search] + doc_render): import each module exactly ONCE to avoid the double-import nxasm rc6 trap. nx_wiki_content_loader transitively pulls nx_wiki_index_builder (doc store + inverted index). Evidence -> knowledge/status/wiki_discovery_gate.log + stdout. license_tier: ORIGINAL