feat(control): spawn session NPCs and resize tokens in preview

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

app/main/players/sceneNpcTokensSessionStore.test.ts

@@ -46,6 +46,29 @@ void test('SceneNpcTokensSessionStore setDisposition without inventing position'
   assert.equal(s2.byPlacementId.a?.disposition, 'hostile');
 });
 
+void test('SceneNpcTokensSessionStore spawn is session-only and despawn removes it', () => {
+  const store = new SceneNpcTokensSessionStore();
+  const s1 = store.dispatch({
+    kind: 'spawn',
+    npcId: 'npc1',
+    sceneId: 'sceneA',
+    nx: 0.4,
+    ny: 0.6,
+    disposition: 'hostile',
+  });
+  const ids = Object.keys(s1.spawned);
+  assert.equal(ids.length, 1);
+  const spawn = s1.spawned[ids[0]!];
+  assert.equal(spawn?.npcId, 'npc1');
+  assert.equal(spawn?.sceneId, 'sceneA');
+  assert.equal(spawn?.nx, 0.4);
+  const s2 = store.dispatch({ kind: 'move', placementId: ids[0]!, nx: 0.7, ny: 0.2 });
+  assert.equal(s2.spawned[ids[0]!]?.nx, 0.7);
+  const s3 = store.dispatch({ kind: 'despawn', placementId: ids[0]! });
+  assert.deepEqual(s3.spawned, {});
+  assert.equal(s3.byPlacementId[ids[0]!], undefined);
+});
+
 void test('SceneNpcTokensSessionStore setInactive is session flag', () => {
   const store = new SceneNpcTokensSessionStore();
   const s1 = store.dispatch({ kind: 'setInactive', placementId: 'a', inactive: true });
@@ -58,3 +81,24 @@ void test('SceneNpcTokensSessionStore setInactive is session flag', () => {
   assert.equal(s3.byPlacementId.a?.nx, 0.2);
   assert.equal(s3.byPlacementId.a?.inactive, undefined);
 });
+
+void test('SceneNpcTokensSessionStore setSize is session-only and survives move', () => {
+  const store = new SceneNpcTokensSessionStore();
+  const s1 = store.dispatch({ kind: 'setSize', placementId: 'a', sizeN: 0.2 });
+  assert.equal(s1.byPlacementId.a?.sizeN, 0.2);
+  assert.equal(s1.byPlacementId.a?.nx, undefined);
+  const s2 = store.dispatch({ kind: 'move', placementId: 'a', nx: 0.3, ny: 0.4 });
+  assert.equal(s2.byPlacementId.a?.sizeN, 0.2);
+  assert.equal(s2.byPlacementId.a?.nx, 0.3);
+  const spawned = store.dispatch({
+    kind: 'spawn',
+    npcId: 'npc1',
+    sceneId: 'sceneA',
+    nx: 0.5,
+    ny: 0.5,
+  });
+  const id = Object.keys(spawned.spawned)[0]!;
+  const s3 = store.dispatch({ kind: 'setSize', placementId: id, sizeN: 0.18 });
+  assert.equal(s3.spawned[id]?.sizeN, 0.18);
+  assert.equal(s3.byPlacementId[id]?.sizeN, 0.18);
+});