nx_ims_batch1_publish.nx

nx_ims_batch1_publish.nx -- land batch #1 LIVE through the GUARDED + VERSIONED publish path (vpub): first snapshot a content-addressed rollback version, then the A3 fail-closed guard must ALLOW before the NAS push runs. ADDITIVE. Publishes, in order, the re-emitted START hub (so its rendered tree's forward links to the 4 new children are LIVE -> keeps reachability=100) then the 4 new real pages. The corpus set = EVERY slug any of these pages links to (all 12 wiki slugs + the nav search target); a missing slug => the guard rejects with PG_REJECT_DEAD_LINK (fail-closed), which is the safety property we want. REUSE (no publish/version/push substrate reinvented): nx_wiki_versioned_publish vpub. license_tier: ORIGINAL