Add fleet control: service configs, replica floors, monitor, pause/restart

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.

packages/verae-fleet/services/webhook-deliver.json

@@ -0,0 +1,16 @@
+{
+  "id": "webhook-deliver",
+  "title": "Zapier REST Hook deliverer",
+  "kind": "nats-worker",
+  "package": "verae-zapier-middleware",
+  "role": "webhook-deliver",
+  "managed": true,
+  "runtime": "JetStream consumer + HTTPS POST",
+  "health": { "type": "http", "path": "/health", "timeoutMs": 800 },
+  "ports": { "healthBase": 13300 },
+  "nats": {
+    "in": ["verae.zapier.webhooks.deliver", "verae.zapier.jobs.events"],
+    "out": []
+  },
+  "notes": "HTTPS POST to Zapier hook URL. Not a NATS client in Zapier cloud."
+}