Stabilizza regia, live web e sync punteggi app nativa.

Corregge scadenza token regia oltre le 8h, tabellone HTML sulla pagina live,
pulsanti pausa/ripresa in regia, link admin e broadcast ActionCable diretto.
App Android: overlay branding, sync score da regia via WebSocket con reconnect e poll.

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

backend/app/services/sessions/regia_access.rb

@@ -13,7 +13,9 @@ module Sessions
 
     def rotate!
       token = SecureRandom.urlsafe_base64(24)
-      expires = [DEFAULT_TTL.from_now, session_end_cap].compact.min
+      expires = DEFAULT_TTL.from_now
+      cap = session_end_cap
+      expires = [expires, cap].min if cap&.future?
       @session.update!(
         regia_token_digest: digest(token),
         regia_token_expires_at: expires

backend/app/services/sessions/select_quality.rb

@@ -0,0 +1,29 @@
+module Sessions
+  # Sceglie il preset più alto supportato dall'upload misurato (test rete).
+  class SelectQuality
+    UPLOAD_HEADROOM = 0.8
+
+    PRESETS = [
+      { id: "1080p_30_4.5mbps", target_bitrate: 4_500_000, target_fps: 30 },
+      { id: "720p_30_4mbps", target_bitrate: 4_000_000, target_fps: 30 },
+      { id: "720p_30_2.5mbps", target_bitrate: 2_500_000, target_fps: 30 },
+      { id: "720p_30_1.5mbps", target_bitrate: 1_500_000, target_fps: 30 }
+    ].freeze
+
+    def self.call(upload_mbps:)
+      new(upload_mbps: upload_mbps).call
+    end
+
+    def initialize(upload_mbps:)
+      @upload_mbps = upload_mbps.to_f
+    end
+
+    def call
+      PRESETS.find { |preset| upload_sufficient?(preset) } || PRESETS.last
+    end
+
+    def upload_sufficient?(preset)
+      @upload_mbps >= (preset[:target_bitrate] / 1_000_000.0 * UPLOAD_HEADROOM)
+    end
+  end
+end