Aggiunge l'autoscaler streaming con warm spare e kill-switch.

Scala i nodi overflow quando gli slot calano, mantiene una spare a caldo sotto carico e spegne gli idle, disattivabile con STREAM_AUTOSCALE_ENABLED.

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

backend/config/initializers/sidekiq.rb

@@ -6,6 +6,7 @@ Sidekiq.configure_server do |config|
   config.on(:startup) do
     StreamPublisherSyncJob.ensure_chain
     Ops::HealthMonitorJob.ensure_chain
+    Streams::AutoscalerJob.ensure_chain
   end
 end
 

backend/config/locales/admin.en.yml

@@ -118,6 +118,7 @@ en:
     stream_nodes:
       title: Streaming nodes
       providers: "Cloud provider: %{cloud} · DNS provider: %{dns}"
+      autoscale: "Autoscaler %{enabled} · free_slots=%{free} (soft≤%{soft}) · spare=%{spare}/%{warm} · overflow=%{overflow}/%{max} · kind=%{kind}"
       provision_lab: Provision lab node
       provision_cloud: Provision Hetzner node
       provision_cloud_confirm: "Create a Hetzner Cloud server + DNS record on mltv-stream.net? Billing applies until destroyed."

backend/config/locales/admin.it.yml

@@ -118,6 +118,7 @@ it:
     stream_nodes:
       title: Nodi streaming
       providers: "Cloud provider: %{cloud} · DNS provider: %{dns}"
+      autoscale: "Autoscaler %{enabled} · free_slots=%{free} (soft≤%{soft}) · spare=%{spare}/%{warm} · overflow=%{overflow}/%{max} · kind=%{kind}"
       provision_lab: Provisiona nodo lab
       provision_cloud: Provisiona nodo Hetzner
       provision_cloud_confirm: "Creare un server Hetzner Cloud + record DNS su mltv-stream.net? Verrà addebitato fino allo spegnimento."