nx_wiki_walk_metrics.nx

nx_wiki_walk_metrics.nx -- WALKABILITY metrics A-H over the LIVE wiki link graph + the curated wiki_links.tsv. The measured F->toward-S scorecard for the nav-tree arc: dense bidirectional link-tree + learning-path coverage, computed not claimed. REUSE (zero new link/slug/corpus substrate invented): nx_ims_monitor nx_ims_collect_targets ([[wikilink]]+href extractor), nx_ims_slug_eq (slug resolver), nx_ims_resolve_root, and the NxWikiDocStore -- byte-identical edge semantics to the live orphan/dead-link monitor + graph builder + walkability scorecard. nx_wiki_shell sh_links_load / sh_wl_field / sh_wl_row_of / sh_streq -- the curated wiki_links.tsv reader (tree/path/related/tags), shared with the page furniture emitters so "the path" is one truth. nx_syscalls sys_read_file (read-only) + sys_mmap scratch. The corpus path is a PARAMETER so the referee gate can feed healthy / sparse / one-axis fixtures and prove no green is fabricated. outs[] layout (all integers; ratios scaled x100 for fixed-point, NO float): [0] N pages [1] total internal page-link edges [2] A reciprocity % = reciprocal-edges / total-edges * 100 [3] B orphan ratio % = orphans(in==0, excl root) / N * 100 [4] C dead-end ratio % = dead-ends(out==0) / N * 100 [5] D avg shortest path x100 (over reachable ordered pairs from every source) [6] D diameter = max finite shortest-path (clicks) [7] E reachability % = reachable-from-start (<= K hops) / N * 100 [8] F link density x100 = total-edges / N (avg out-degree) [9] G prevnext coverage % = pages whose prev/next slug RESOLVES to a real page / eligible [10] H breadcrumb integrity % = pages whose parent chain resolves to root w/ NO cycle / N [11] orphan count (raw) [12] dead-end count (raw) [13] reciprocal edge count (raw, directed) [14] reachable count (raw, incl start) Hygiene: M1 out-params; M3 every while hard-capped; M5 bounded indexing; M7 named constants; M8 verdicts. ("loop"/"match" reserved.) license_tier: ORIGINAL