Introduce architettura multi-sport con catalogo, engine scoring e overlay.

Catalogo sport in YAML, board implicito, engine per volley/basket/timed/racket/timer/generic, regia e app Android allineate.

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

backend/app/models/score_state.rb

@@ -1,9 +1,12 @@
 class ScoreState < ApplicationRecord
   belongs_to :stream_session
 
+  before_validation :sync_board_type_from_match, on: :create
+
   def as_cable_payload
-    {
+    payload = {
       type: "score_update",
+      board_type: effective_board_type,
       home_sets: home_sets,
       away_sets: away_sets,
       home_points: home_points,
@@ -11,7 +14,74 @@ class ScoreState < ApplicationRecord
       current_set: current_set,
       set_partials: set_partials || [],
       timeout_home: timeout_home,
-      timeout_away: timeout_away
+      timeout_away: timeout_away,
+      period: period,
+      data: data || {}
     }
+
+    case effective_board_type
+    when "basket", "timed"
+      payload[:home_points] = basket_home_score
+      payload[:away_points] = basket_away_score
+      payload[:period] = current_period_label
+      payload[:clock_secs] = clock_secs
+      payload[:clock_running] = clock_running?
+    when "timer"
+      payload[:clock_secs] = clock_secs
+      payload[:clock_running] = clock_running?
+    end
+
+    payload
+  end
+
+  def effective_board_type
+    board_type.presence || stream_session&.match&.effective_board_type || "volley"
+  end
+
+  def basket_home_score
+    (data || {})["home_score"].to_i
+  end
+
+  def basket_away_score
+    (data || {})["away_score"].to_i
+  end
+
+  def clock_secs
+    (data || {})["clock_secs"].to_i
+  end
+
+  def clock_running?
+    !!(data || {})["clock_running"]
+  end
+
+  def current_period
+    (data || {})["period"].to_i.positive? ? (data || {})["period"].to_i : 1
+  end
+
+  def current_period_label
+    case effective_board_type
+    when "basket"
+      ot = (data || {})["overtime"]
+      return "OT#{current_period - rules_periods}" if ot
+
+      "Q#{current_period}"
+    when "timed"
+      ot = (data || {})["overtime"]
+      return "Suppl." if ot
+
+      "#{current_period}° tempo"
+    else
+      period.presence || "#{current_set}° set"
+    end
+  end
+
+  private
+
+  def sync_board_type_from_match
+    self.board_type = stream_session.match.effective_board_type if board_type.blank? && stream_session&.match
+  end
+
+  def rules_periods
+    stream_session&.match&.effective_scoring_rules&.dig("periods").to_i
   end
 end