fix: watcher manager now displays "heard from" status, instead of unit status. Refreshes ever 60 mins, if havent heard from in >60 mins display missing.

backend/routers/watcher_manager.py

@@ -31,11 +31,15 @@ router = APIRouter(tags=["admin"])
 def _agent_to_dict(agent: WatcherAgent) -> dict:
     last_seen = agent.last_seen
     if last_seen:
-        # Compute age in minutes (last_seen stored as UTC naive)
         now_utc = datetime.utcnow()
         age_minutes = int((now_utc - last_seen).total_seconds() // 60)
+        if age_minutes > 60:
+            status = "missing"
+        else:
+            status = "ok"
     else:
         age_minutes = None
+        status = "missing"
 
     return {
         "id": agent.id,
@@ -43,7 +47,7 @@ def _agent_to_dict(agent: WatcherAgent) -> dict:
         "version": agent.version,
         "last_seen": last_seen.isoformat() if last_seen else None,
         "age_minutes": age_minutes,
-        "status": agent.status,
+        "status": status,
         "ip_address": agent.ip_address,
         "log_tail": agent.log_tail,
         "update_pending": bool(agent.update_pending),