Pasture: NodeBB joins

NodeBB 4.16.1 runs in the pasture on the pasture's Mongo, set up by its
automated setup, with an API token written where NodeBB keeps them.
scenarios/nodebb.sh passes its 23 checks with no change to PrivaPub: a
category followed and its topic as a titled thread, replies both ways, a
follow of alice and her post there, votes both ways, an edit and a
deletion, a chat both ways, the unfollow and statistics.

NodeBB never federates a topic's lock, and its API follows an account
elsewhere only when named by its handle; both are in docs/INTEROP.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

docs/ROADMAP.md

@@ -69,7 +69,7 @@ Written 2026-10-01 from the original 2023 code, the decePubClient UI, a federati
     Funkwhale serve it; Funkwhale's answers named after our follow and its deletions of several uploads.
   - GoToSocial's interaction policies both ways; personas join and leave remote events; third-party replies to a
     persona's posts passed on to its followers (owner decisions 2026-10-05).
-  - wave 2, under way: PieFed and Mbin in the pasture with scenarios (2026-10-05). What they showed and was fixed: the
+  - wave 2, under way: PieFed, Mbin and NodeBB in the pasture with scenarios (2026-10-05). What they showed and was fixed: the
     instance actor answers at the server's root, where PieFed looks for the inbox it announces to; a community's removal
     of a post on its own server is believed at once; a followed group's post its own server sends without announcing
     it is kept, and a bare `Lock` from the post's server is taken (Mbin). Open: direct messages to Mbin, which takes