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.test.ts

@@ -0,0 +1,33 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import test from 'node:test';
+
+import { readPresentationSettings, writePresentationSettings } from './appPreferences';
+
+void test('appPreferences: presentation settings round-trip without clobbering eula', () => {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'dnd-prefs-'));
+  const prefsPath = path.join(dir, 'preferences.json');
+  fs.writeFileSync(prefsPath, `${JSON.stringify({ eulaAcceptedVersion: 2 }, null, 2)}\n`, 'utf8');
+
+  writePresentationSettings(dir, { displayId: 42, fullScreen: false });
+  const loaded = readPresentationSettings(dir);
+  assert.equal(loaded.displayId, 42);
+  assert.equal(loaded.fullScreen, false);
+
+  const raw = JSON.parse(fs.readFileSync(prefsPath, 'utf8')) as {
+    eulaAcceptedVersion?: number;
+    presentation?: { displayId: number | null; fullScreen: boolean };
+  };
+  assert.equal(raw.eulaAcceptedVersion, 2);
+  assert.equal(raw.presentation?.displayId, 42);
+  assert.equal(raw.presentation?.fullScreen, false);
+});
+
+void test('appPreferences: defaults when preferences missing', () => {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'dnd-prefs-'));
+  const loaded = readPresentationSettings(dir);
+  assert.equal(loaded.displayId, null);
+  assert.equal(loaded.fullScreen, true);
+});

app/main/preferences/appPreferences.ts

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+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;
+}