Keep quiet for the setuid search the engine now runs to completion (hq issue 361)

The node-engine's search has no bound any more: it runs at idle priority
and judges from its last complete, fresh result. The controller's quiet
while an agent account waits is the engine's rootsearch.Quiet, not the
old fifteen-minute bound, and the node-engine is pinned at its pull
request.

cmd/mesh-controller/agent_account.go

@@ -119,9 +119,11 @@ func judgedConfined(agent string, h inventory.NodeHealth, had bool, now time.Tim
 }
 
 // searchQuietFor is how long the controller lets an agent account's verdict wait for the node-engine's setuid
-// search before that is itself the urgent condition: the engine's bound on one search (link.RootSearchBound, the
-// engine's own value), counted from when this controller first saw it waiting, never from the engine's start.
-const searchQuietFor = link.RootSearchBound
+// search before that is itself the urgent condition: the longest a search is expected to take (link.RootSearchQuiet,
+// the engine's own value; novox/hq issue 361 — the search runs to completion, with no bound of its own), counted
+// from when this controller first saw it waiting, never from the engine's start. Quiet raises nothing; it never
+// makes the agent account confined, which only a healthy verdict from a complete, fresh search does.
+const searchQuietFor = link.RootSearchQuiet
 
 // The kinds of an agent account's verdict, for the quiet a search earns.
 const (
@@ -207,10 +209,10 @@ func probeAgentAccounts(ctx context.Context, d *doctor) ([]conditions.Observatio
 		if confined {
 			continue
 		}
-		// Not judged yet only because the first search since the node-engine started is still running: not the
+		// Not judged yet only because the node-engine's search runs and no complete, fresh one judges: not the
 		// urgent condition after every restart. The agent is still not confined — ADR 0259's router reads
 		// agentConfined, not this — and `node show` still says not judged. Loud again once the search fails,
-		// runs out its bound, or the statement goes stale.
+		// waits past searchQuietFor, or the statement goes stale.
 		if quiet {
 			continue
 		}