Some output tweaks; and some additional transition events upon resume (paused->unknown->{up|down})

internal/health/state.go

@@ -104,13 +104,15 @@ type Backend struct {
 	Transitions []Transition // newest first, capped at maxHistory
 }
 
-// New creates a Backend in StateUnknown.
+// New creates a Backend in StateUnknown with the health counter pre-loaded to
+// Rise-1, so the very first probe resolves the state: one pass → Up, any
+// fail → Down (via the StateUnknown shortcut in Record).
 func New(name string, addr net.IP, rise, fall int) *Backend {
 	return &Backend{
 		Name:    name,
 		Address: addr,
 		State:   StateUnknown,
-		Counter: HealthCounter{Rise: rise, Fall: fall},
+		Counter: HealthCounter{Rise: rise, Fall: fall, Health: rise - 1},
 	}
 }
 
@@ -155,7 +157,7 @@ func (b *Backend) Resume(maxHistory int) bool {
 		return false
 	}
 	b.transition(StateUnknown, ProbeResult{}, maxHistory)
-	b.Counter.Health = 0
+	b.Counter.Health = b.Counter.Rise - 1
 	return true
 }