The controller no longer subscribes to the alive message: HostBeats, its handler, the heartbeat-gap duration and a fixed silent bound (issue 1183, AC3, AC4, AC5)

internal/link/bus.go

@@ -67,17 +67,12 @@ const (
 	// BuiltSubject is where a build's outcome lands, for results nobody was waiting for.
 	BuiltSubject = "mesh.control.built"
 
-	// AliveSubjects is every node's heartbeat. Core NATS, never a stream: a lost heartbeat is the
-	// next heartbeat, and a stream of them is the mesh's least valuable message competing for
-	// retention with its most valuable (design 25 §3).
-	AliveSubjects = "mesh.control.*.alive"
-
 	// ToolsAliveSubjects is every machine's node tools saying they are there (novox/hq to-be 45 §3,
 	// S11): core NATS like the host's, for the same reason.
 	ToolsAliveSubjects = "mesh.control.*.tools-alive"
 
 	// HealthSubjects is every machine's health statement between its reports (novox/hq ADR 0240): core
-	// NATS like the heartbeat, because a statement lost is said again within a minute while anything is
+	// NATS like the node tools' heartbeat, because a statement lost is said again within a minute while anything is
 	// not healthy, and the next report carries it whatever happens.
 	HealthSubjects = "mesh.control.*.health"
 )
@@ -89,9 +84,6 @@ func HealthSubject(node string) string { return "mesh.control." + node + ".healt
 // message the store-window guarantee is about (ADR 0083).
 func ReportSubject(node string) string { return "mesh.control." + node + ".report" }
 
-// AliveSubject is one node's heartbeat.
-func AliveSubject(node string) string { return "mesh.control." + node + ".alive" }
-
 // ToolsAliveSubject is one machine's node tools' heartbeat.
 func ToolsAliveSubject(node string) string { return "mesh.control." + node + ".tools-alive" }