feat(editor): настройки экрана презентации при запуске сессии

Выбор монитора и полноэкранного режима в настройках; при «Запустить» окно презентации открывается на выбранном дисплее автоматически.

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

app/main/preferences/appPreferences.ts

@@ -0,0 +1,47 @@
+import fs from 'node:fs';
+
+import type { PresentationSettings } from '../../shared/types/presentationSettings';
+import { DEFAULT_PRESENTATION_SETTINGS } from '../../shared/types/presentationSettings';
+import { preferencesPath } from '../license/paths';
+
+type StoredPreferences = {
+  eulaAcceptedVersion?: number;
+  presentation?: Partial<PresentationSettings>;
+};
+
+function readAll(userData: string): StoredPreferences {
+  try {
+    const raw = fs.readFileSync(preferencesPath(userData), 'utf8');
+    return JSON.parse(raw) as StoredPreferences;
+  } catch {
+    return {};
+  }
+}
+
+function writeAll(userData: string, prefs: StoredPreferences): void {
+  fs.mkdirSync(userData, { recursive: true });
+  fs.writeFileSync(preferencesPath(userData), `${JSON.stringify(prefs, null, 2)}\n`, 'utf8');
+}
+
+export function readPresentationSettings(userData: string): PresentationSettings {
+  const prefs = readAll(userData);
+  return {
+    ...DEFAULT_PRESENTATION_SETTINGS,
+    ...prefs.presentation,
+  };
+}
+
+export function writePresentationSettings(
+  userData: string,
+  patch: Partial<PresentationSettings>,
+): PresentationSettings {
+  const prefs = readAll(userData);
+  const next: PresentationSettings = {
+    ...DEFAULT_PRESENTATION_SETTINGS,
+    ...prefs.presentation,
+    ...patch,
+  };
+  prefs.presentation = next;
+  writeAll(userData, prefs);
+  return next;
+}