Color fleet monitor rows: green operational, yellow degraded, red down

Paused or unhealthy replicas mark the service degraded even if the
tree-node floor is still met. Unmanaged NATS with no process is down.

packages/verae-fleet/src/classify.js

@@ -0,0 +1,29 @@
+/**
+ * Row health: operational | degraded | down
+ * @module classify
+ */
+
+/**
+ * @param {{
+ *   min?: number,
+ *   available?: number,
+ *   running?: number,
+ *   paused?: number,
+ *   managed?: boolean,
+ *   instances?: Array<{ pid?: number|null, paused?: boolean, healthy?: boolean }>
+ * }} sv
+ * @returns {'operational'|'degraded'|'down'}
+ */
+export function classifyService(sv) {
+  const min = sv.min ?? 0;
+  const available = sv.available ?? 0;
+  const running = sv.running ?? 0;
+  const paused = sv.paused ?? 0;
+  const inst = sv.instances || [];
+  const unhealthy = inst.filter((i) => i.pid && i.healthy === false && !i.paused).length;
+
+  if (min === 0 && running === 0) return 'operational';
+  if (available === 0 && min > 0) return 'down';
+  if (available >= min && paused === 0 && unhealthy === 0) return 'operational';
+  return 'degraded';
+}

packages/verae-fleet/src/supervisor.js

@@ -9,6 +9,7 @@ import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { loadFleet } from './load.js';
 import { httpProbe, postControl } from './health.js';
+import { classifyService } from './classify.js';
 
 const WORKER = path.join(path.dirname(fileURLToPath(import.meta.url)), 'worker.js');
 
@@ -284,6 +285,7 @@ export class Supervisor {
           restarts: i.restarts,
         })),
       };
+      services[spec.id].health = classifyService(services[spec.id]);
     }
     return {
       control: this.loaded.control,