feat(play): hide NPC tokens from the player screen

A token can be hidden per session from the control menu. The GM still sees it, and its path keeps moving. Scene editor grid labels no longer call a removed helper.

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

app/shared/types/appPlayers.ts

@@ -84,6 +84,8 @@ export type SceneNpcTokensSessionPlacement = {
   disposition?: NpcDisposition;
   /** Session-only: серая рамка и grayscale. */
   inactive?: boolean;
+  /** Session-only: токен виден мастеру, но не на презентации. */
+  hiddenFromPlayers?: boolean;
 };
 
 /** Подкрепление: токен только на сессию, не пишется в scene.npcTokens. */
@@ -110,6 +112,7 @@ export type SceneNpcTokensSessionEvent =
   | { kind: 'setSize'; placementId: string; sizeN: number }
   | { kind: 'setDisposition'; placementId: string; disposition: NpcDisposition }
   | { kind: 'setInactive'; placementId: string; inactive: boolean }
+  | { kind: 'setHiddenFromPlayers'; placementId: string; hidden: boolean }
   | { kind: 'setScale'; scale: number }
   | {
       kind: 'spawn';