Aggiunge replay YouTube temporaneo, pull registrazioni dai CPX e snapshot ingest in admin.

Così overflow Hetzner e VOD YouTube restano in archivio dopo lo spegnimento del nodo, e la colonna ingest non si svuota.

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

backend/spec/models/stream_session_node_spec.rb

@@ -34,4 +34,35 @@ RSpec.describe StreamSession do
     expect(session.mediamtx_api_base_url).to eq("http://10.0.0.2:9997")
     expect(session.mediamtx_internal_rtmp_url).to eq("rtmp://10.0.0.2:1935")
   end
+
+  it "keeps ingest snapshot after the stream node is destroyed" do
+    node = StreamNode.create!(
+      slug: "ingest-01",
+      hostname: "ingest-01.mltv-stream.net",
+      role: "cloud",
+      status: "ready",
+      provider: "hetzner",
+      rtmp_base_url: "rtmp://ingest-01.mltv-stream.net:1935",
+      hls_base_url: "https://ingest-01.mltv-stream.net/hls",
+      api_base_url: "http://10.0.0.2:9997",
+      internal_rtmp_url: "rtmp://10.0.0.2:1935",
+      max_publishers: 4,
+      max_relays: 4
+    )
+    user = User.create!(email: "snap@example.com", name: "S", password: "Password123", role: "coach")
+    club = Club.create!(name: "Club Snap", sport: "volleyball")
+    team = club.teams.create!(name: "Team", sport: "volleyball", slug: "team-snap")
+    match = team.matches.create!(opponent_name: "Opp", scheduled_at: 1.hour.from_now)
+    session = StreamSession.create!(
+      match: match, user: user, platform: "matchlivetv", status: "ended", stream_node: node
+    )
+    expect(session.ingest_slug).to eq("ingest-01")
+    expect(session.ingest_role).to eq("cloud")
+
+    node.destroy!
+    session.reload
+    expect(session.stream_node).to be_nil
+    expect(session.ingest_slug_display).to eq("ingest-01")
+    expect(session.ingest_role_display).to eq("cloud")
+  end
 end