perf: cut ControlApp re-renders and lazy-load VFX packs

Move audio scrub/volume and brush drafts off root React ticks, coalesce overlay layout IPC, cache machine fingerprint and asset URLs, share one scene overlay host, and stop idle Pixi ticker. Also harden console against EPIPE on window load failures.

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

app/renderer/control/controlApp.audioPerf.networkRegression.test.ts

@@ -0,0 +1,27 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import path from 'node:path';
+import test from 'node:test';
+import { fileURLToPath } from 'node:url';
+
+const here = path.dirname(fileURLToPath(import.meta.url));
+
+/** Регресс: RAF в ControlApp бампил оба audio-tick на каждом кадре → полный ре-рендер пульта. */
+void test('ControlApp: нет per-frame RAF setState для аудио scrub', () => {
+  const app = fs.readFileSync(path.join(here, 'ControlApp.tsx'), 'utf8');
+  const card = fs.readFileSync(path.join(here, 'ControlAudioCard.tsx'), 'utf8');
+
+  assert.doesNotMatch(app, /\banyPlaying\b/);
+  // Старый паттерн: RAF tick → оба set*AudioStateTick.
+  assert.doesNotMatch(
+    app,
+    /const tick = \(\) => \{\s*setSceneAudioStateTick/,
+    'корневой RAF-тик аудио удалён',
+  );
+  assert.doesNotMatch(app, /requestAnimationFrame\s*\(\s*tick\s*\)/);
+
+  assert.ok(app.includes('ControlAudioCard'));
+  assert.ok(card.includes('requestAnimationFrame'), 'scrub крутится локально в карточке');
+  assert.ok(card.includes('scrubFillRef'), 'прогресс пишется в DOM, не через setState корня');
+  assert.ok(card.includes('setGainUi'), 'громкость обновляет только карточку');
+});