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Johnathan Corgan
81cd10d5db
Complete the control-plane read-isolation work: every pure-read show_* query now renders in the control accept task from published read snapshots, so none round-trips the data-plane receive loop. Only the mutating connect/disconnect commands still reach that loop. Three subsystem snapshots are published via ArcSwap and served through the read handle's snapshot_dispatch: - A routing read view (spanning tree, bloom filters, coordinate cache, identity cache, and the discovery F-queue summary scalars), published from the tick, serving show_tree/show_bloom/show_cache/show_routing/ show_identity_cache. - A per-entity read view (peers, sessions, links, connections, transports, and the MMP link/session views) as Vec<Arc<Row>> tables reconciled against the prior snapshot so a republish reuses unchanged rows by pointer and re-allocates only changed or new rows, keeping the per-tick publish cost bounded as the peer/session count grows. Serves show_peers/show_sessions/show_links/show_connections/show_transports/ show_mmp. - The stats snapshot is extended with the peer-ACL status and a per-peer metadata map (is_active, npub, display name), resolved at publish time, serving show_acl and the two per-peer stats queries. Display names and other cross-subsystem fields are resolved at publish time; time-relative fields are derived at render time from captured absolute timestamps, so rendered output is byte-identical to the prior on-loop handlers, which are retained as the equality oracle. With every read query served off-loop, the show_* branch is removed from the rx_loop control handler and the now-dead on-loop dispatcher deleted. The snapshot projections are forward-compatible with the later structural extraction of the derived-state and session tables: they become thin views over the extracted types without changing the read-handle interface.