Alza soft capacity fase A e aggiunge quiet hours CPX notturne.

Home a 4 e cloud a 6 con MAX_NODES=12 (~76 soft); di notte (02–07 Europe/Rome) niente scale-out/warm-spare e sweeper che chiude i CPX idle.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/streams/autoscaler.rb

@@ -71,6 +71,10 @@ module Streams
         estimated_monthly_eur(overflow_count) <= monthly_budget_eur
       end
 
+      def quiet_hours?
+        QuietHours.active?
+      end
+
       def reconcile!(provisioner: nil)
         return Result.new(skipped: true, actions: [], metrics: metrics) unless enabled?
 
@@ -106,7 +110,8 @@ module Streams
           allow_cloud: allow_cloud?,
           estimated_monthly_eur: estimated_monthly_eur(overflow.size),
           monthly_budget_eur: monthly_budget_eur,
-          within_budget: within_budget?(overflow.size)
+          within_budget: within_budget?(overflow.size),
+          quiet_hours: quiet_hours?
         }
       end
 
@@ -201,6 +206,7 @@ module Streams
     end
 
     def warm_spare_desired?(m)
+      return false if self.class.quiet_hours?
       return false if self.class.warm_spare_min <= 0
 
       need_capacity?(m) || overflow_in_use?
@@ -211,6 +217,7 @@ module Streams
     end
 
     def can_provision?(m)
+      return false if self.class.quiet_hours?
       return false if m[:overflow_nodes] >= self.class.max_overflow_nodes
       return false unless self.class.within_budget?(m[:overflow_nodes] + 1)
       return false if self.class.kind == "cloud" && !self.class.allow_cloud?
@@ -249,6 +256,9 @@ module Streams
     end
 
     def idle_long_enough?(node)
+      # Di notte chiudi subito i nodi idle (niente attesa IDLE_MINUTES).
+      return true if self.class.quiet_hours?
+
       idle_since(node) <= self.class.idle_minutes.minutes.ago
     end
 
@@ -258,6 +268,7 @@ module Streams
     end
 
     def keep_as_warm_spare?(node)
+      return false if self.class.quiet_hours?
       return false unless warm_spare_desired?(self.class.metrics)
 
       spares = StreamNode.ready.where.not(slug: NodeRegistry::HOME_SLUG).select { |n| n.active_publishers.zero? }