feat(traps): activation VFX/SFX, explosion effect, and help section

Wire mimic/pit/arrow/laser media on activate, poison/explosion via effects, and document the scene editor and traps in Instructions.

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

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

@@ -46,6 +46,34 @@ void test('ControlApp: звук облака яда (public/oblako-yada.mp3)', (
   assert.ok(sfxSrc.includes('playbackRate'));
 });
 
+void test('ControlApp: активация ловушки «яд» спавнит poisonCloud как на пульте эффектов', () => {
+  const src = readControlApp();
+  assert.ok(src.includes("trap?.type === 'poison'"));
+  assert.ok(src.includes("type: 'poisonCloud'"));
+  assert.ok(src.includes('trap_pc_'));
+  assert.ok(src.includes('playPoisonCloudEffectSound(poisonLifeMs)'));
+});
+
+void test('ControlApp: эффект «взрыв» + ловушка используют explosion webm/mp3', () => {
+  const appSrc = readControlApp();
+  const sfxSrc = fs.readFileSync(path.join(here, 'explosionSfx.ts'), 'utf8');
+  assert.ok(appSrc.includes("title={t('control.explosion')}"));
+  assert.ok(appSrc.includes("tool: 'explosion'"));
+  assert.ok(appSrc.includes("type: 'explosion'"));
+  assert.ok(appSrc.includes('getExplosionEffectLifeMs'));
+  assert.ok(appSrc.includes('playExplosionEffectSound'));
+  assert.ok(appSrc.includes("trap?.type === 'explosion'"));
+  assert.ok(appSrc.includes('trap_ex_'));
+  assert.ok(sfxSrc.includes('explosion.mp3'));
+  assert.ok(sfxSrc.includes('aerial-debris-smoke.webm'));
+  assert.ok(appSrc.includes('ExplosionVideoOverlay'));
+  const videoOverlaySrc = fs.readFileSync(
+    path.join(here, '..', 'shared', 'effects', 'ExplosionVideoOverlay.tsx'),
+    'utf8',
+  );
+  assert.ok(videoOverlaySrc.includes('explosionEffectVideoUrl'));
+});
+
 void test('ControlApp: эффекты в пульте, иконки с тултипами и подписью для a11y', () => {
   const src = readControlApp();
   assert.ok(src.includes("t('control.instruments')"));