feat(core): add Electron runtime, services, and app composition

src/config/resolve/subtitle-style.test.ts

@@ -0,0 +1,29 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { createResolveContext } from './context';
+import { applySubtitleDomainConfig } from './subtitle-domains';
+
+test('subtitleStyle preserveLineBreaks falls back while merge is preserved', () => {
+  const { context, warnings } = createResolveContext({
+    subtitleStyle: {
+      preserveLineBreaks: 'invalid' as unknown as boolean,
+      backgroundColor: 'rgb(1, 2, 3, 0.5)',
+      secondary: {
+        fontColor: 'yellow',
+      },
+    },
+  });
+
+  applySubtitleDomainConfig(context);
+
+  assert.equal(context.resolved.subtitleStyle.preserveLineBreaks, false);
+  assert.equal(context.resolved.subtitleStyle.backgroundColor, 'rgb(1, 2, 3, 0.5)');
+  assert.equal(context.resolved.subtitleStyle.secondary.fontColor, 'yellow');
+  assert.ok(
+    warnings.some(
+      (warning) =>
+        warning.path === 'subtitleStyle.preserveLineBreaks' &&
+        warning.message === 'Expected boolean.',
+    ),
+  );
+});