feat(control): grid snap, NPC context actions, and overlay dim fix

Re-enable users-branch UI, snap session tokens to square/hex grid from the control preview, refine inactive/open-info NPC menus, block marker actions while an effect brush is active, and dim materials/NPC overlays only when they are open.

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

app/renderer/control/controlApp.effectsPanel.test.ts

@@ -116,6 +116,18 @@ void test('ControlApp: эффекты в пульте, иконки с тулт
   assert.ok(fx !== -1 && story !== -1 && fx < story, 'Блок эффектов должен быть выше сюжетной линии');
 });
 
+void test('ControlApp: чекбокс привязки токенов к сетке', () => {
+  const src = readControlApp();
+  const css = readControlAppCss();
+  assert.ok(src.includes('useTokenGridSnapSession'));
+  assert.ok(src.includes('snapNormToGridCell'));
+  assert.ok(src.includes('data-testid="token-grid-snap"'));
+  assert.ok(src.includes("t('control.snapTokensToGrid')"));
+  assert.ok(src.includes('snapAllTokensToGrid'));
+  assert.ok(src.includes('snapNorm={snapNormActive}'));
+  assert.ok(css.includes('.snapToGrid'));
+});
+
 void test('ControlApp: сюжетная линия — колонка сверху вниз и фон как у карточек ветвления', () => {
   const src = readControlApp();
   const css = readControlAppCss();