feat: 토너먼트 페이지군 자동 갱신을 분리한다

토너먼트 전용 SSE scope와 slice invalidation을 추가하고 같은 계정의 visible 탭이 조회를 공유하게 한다. 서버 증명 snapshot 조회는 접속 점수를 더하지 않되 기존 hard limit은 유지한다.

packages/common/src/realtime/types.ts

@@ -223,6 +223,26 @@ export interface TournamentChangedEvent {
     type: 'tournamentChanged';
 }
 
+/** Redis-owned slices changed after the atomic tournament projection commit. */
+export interface TournamentProjectionChangedEvent {
+    type: 'tournamentProjectionChanged';
+    invalidation: TournamentViewInvalidation;
+}
+
+/** Browser-safe tournament page-family refresh selection. */
+export interface TournamentViewInvalidation {
+    snapshot: boolean;
+    betting: boolean;
+    rankings: boolean;
+}
+
+export interface TournamentViewInvalidatedEvent {
+    type: 'tournamentViewInvalidated';
+    invalidation: TournamentViewInvalidation;
+    /** Opaque, short-lived proof that the server initiated this refresh. */
+    refreshGrant: string;
+}
+
 export interface ReadModelInvalidatedEvent {
     type: 'readModelInvalidated';
     invalidation: RealtimeReadModelInvalidation;
@@ -239,7 +259,12 @@ export interface MessagesInvalidatedEvent {
 export const REALTIME_ACCESS_GRANT_HEADER = 'x-sammo-realtime-access-grant';
 
 /** Events safe to expose to an authenticated browser over SSE. */
-export type PublicRealtimeEvent = ReadModelInvalidatedEvent | MessagesInvalidatedEvent;
+export type PublicRealtimeEvent = ReadModelInvalidatedEvent | MessagesInvalidatedEvent | TournamentViewInvalidatedEvent;
 
 export type RealtimeEvent =
-    TurnCompletedEvent | ReadModelChangedEvent | MessageCreatedEvent | MessagesChangedEvent | TournamentChangedEvent;
+    | TurnCompletedEvent
+    | ReadModelChangedEvent
+    | MessageCreatedEvent
+    | MessagesChangedEvent
+    | TournamentChangedEvent
+    | TournamentProjectionChangedEvent;