Refresh rate is honoured exactly everywhere: no list floor, sampler up to 10 s, server caches reduced to coalescing only

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

web/src/Shell.tsx

@@ -74,7 +74,7 @@ export default function Shell({ me: hubMe, onLoggedOut }: { me: Me; onLoggedOut:
 
   // Machine list for the switcher (hub-local), refreshed while the console is open.
   const loadMachines = useCallback(async () => { try { setMachines((await api.machines()).nodes) } catch { /* not a hub or offline */ } }, [])
-  useEffect(() => { loadMachines(); const t = setInterval(loadMachines, Math.max(listRate, 5000)); return () => clearInterval(t) }, [loadMachines, listRate])
+  useEffect(() => { loadMachines(); const t = setInterval(loadMachines, listRate); return () => clearInterval(t) }, [loadMachines, listRate])
 
   // Switching machines: reset everything that belongs to a host, then re-fetch its identity.
   const switchMachine = (name: string | null) => {
@@ -88,7 +88,7 @@ export default function Shell({ me: hubMe, onLoggedOut }: { me: Me; onLoggedOut:
     let stop = false
     const tick = async () => { try { const m = await api.me(); if (!stop) { setRemoteMe(m); setRemoteErr('') } } catch (e) { if (!stop) setRemoteErr(e instanceof Error ? e.message : 'unreachable') } }
     tick()
-    const t = setInterval(tick, Math.max(listRate, 5000))
+    const t = setInterval(tick, listRate)
     return () => { stop = true; clearInterval(t) }
   }, [machine, listRate])