docs(CLAUDE.md): note .bound marker filter on agent_sockets (follow-up to #832)

CLAUDE.md

@@ -43,6 +43,14 @@ hive-c0re/         host daemon + sibling operator CLI (lib + 2 bins)
   src/agent_sockets.rs  writes `/var/lib/hyperhive/agent-sockets.json` on
                          meta sync; gateway reads name→socket-path
                          map for unix-domain per-agent UI binding (#784).
+                         Entries are filtered by a `.bound` marker file
+                         the harness drops next to its socket after a
+                         successful `bind()` (#832) — pre-bind agents
+                         stay out of the map so the gateway never races
+                         a missing-socket upstream. A 10s poll loop
+                         (`spawn_poll`) re-fires the writer so the map
+                         reconverges if a marker appears between
+                         meta-sync ticks.
   src/agent_server.rs   per-sub-agent socket listener (long-poll Recv)
   src/broker.rs         sqlite Message store + intra-process broadcast
                          channel (`MessageEvent`) for `recv_blocking_batch` +