feat(players): NPC disposition types and launch-with-players session tokens

Add Hostile/Neutral/Friendly ring types with session-only inactive overrides on control, plus launch-with-players flow and live player tokens on the map.

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

e2e/scene-npc.spec.ts

@@ -47,7 +47,7 @@ async function seedProjectWithNpcAndPlacement(
   const npcUpsert = await invokeInRenderer<{ project: Project }>(page, 'project.upsertNpc', {
     name: `Guard ${Date.now()}`,
     filePath: sampleImagePath,
-    ringColor: '#c9a227',
+    disposition: 'neutral',
     imageOffset: { x: 0, y: 0 },
   });
   const npc = npcUpsert.project.npcs[npcUpsert.project.npcs.length - 1]!;
@@ -63,6 +63,7 @@ async function seedProjectWithNpcAndPlacement(
           nx: 0.35,
           ny: 0.4,
           sizeN: 0.12,
+          disposition: 'neutral',
         },
       ],
     },