Fleet/keep/middleware NATS_URL lists 10.10.10.21–23. Product streams
are replicas=3. px-worker worm/tree run on that cluster. Backup timer
and px-worker uptime watch are on. MOCK_VERAE and Zapier push unchanged.
Fleet now spawns the real zappier and middleware processes. Metered
timestamp/receipt/hash calls proxy to middleware when ZAPPIER_UPSTREAM
is set. CS credits, sales per-customer pricing, and QuickBooks export
are separate repos plugged into zappier-edge admin.
Central fleet.json sets min/max copies. Tree-node keepFloor respawns
until three healthy unpaused replicas remain. CLI and loopback UI
pause, resume, stop, and restart instances that fail health checks.
