feat(players): app Players library and circular NPC tokens on scenes

Add userData players/teams, scene npcTokens with hex-inscribed sizing, session scale synced to presentation, and Playwright e2e coverage.

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

app/main/protocol/dndAssetProtocol.ts

@@ -2,7 +2,8 @@ import fs from 'node:fs/promises';
 
 import { session } from 'electron';
 
-import { asAssetId, asTokenId } from '../../shared/types/ids';
+import { asAssetId, asPlayerId, asTokenId } from '../../shared/types/ids';
+import type { PlayersStore } from '../players/playersStore';
 import type { ZipProjectStore } from '../project/zipStore';
 import type { TokensStore } from '../tokens/tokensStore';
 
@@ -75,11 +76,12 @@ async function serveFile(info: ReadInfo, request: Request): Promise<Response> {
 }
 
 /**
- * Обслуживает `dnd://asset?...` и `dnd://token?...`.
+ * Обслуживает `dnd://asset?...`, `dnd://token?...` и `dnd://player?...`.
  */
 export function registerDndAssetProtocol(
   projectStore: ZipProjectStore,
   tokensStore: TokensStore,
+  playersStore: PlayersStore,
 ): void {
   session.defaultSession.protocol.handle('dnd', async (request) => {
     const url = new URL(request.url);
@@ -92,6 +94,8 @@ export function registerDndAssetProtocol(
       info = projectStore.getAssetReadInfo(asAssetId(id));
     } else if (url.hostname === 'token') {
       info = tokensStore.getImageReadInfo(asTokenId(id));
+    } else if (url.hostname === 'player') {
+      info = playersStore.getImageReadInfo(asPlayerId(id));
     }
     if (!info) {
       return new Response(null, { status: 404 });