Function render_swarm_status_live_partial 

pub fn render_swarm_status_live_partial() -> Value

Produce a swarm-status payload reflecting the current “no live providers are wired yet” reality. Pure-function, allocation-only — no I/O — so it is safe to call from the TUI surface-entry path. Used by the TUI’s CassMsg::SwarmEntered handler to seed the cockpit on first entry when no cached snapshot has been supplied yet.