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

src/main/runtime/subtitle-processing-main-deps.test.ts

@@ -0,0 +1,33 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { createBuildSubtitleProcessingControllerMainDepsHandler } from './subtitle-processing-main-deps';
+
+test('subtitle processing main deps builder maps callbacks', async () => {
+  const calls: string[] = [];
+  const deps = createBuildSubtitleProcessingControllerMainDepsHandler({
+    tokenizeSubtitle: async (text) => {
+      calls.push(`tokenize:${text}`);
+      return { text, tokens: null };
+    },
+    emitSubtitle: (payload) => calls.push(`emit:${payload.text}`),
+    logDebug: (message) => calls.push(`log:${message}`),
+    now: () => 42,
+  })();
+
+  const tokenized = await deps.tokenizeSubtitle('line');
+  deps.emitSubtitle({ text: 'line', tokens: null });
+  deps.logDebug?.('ok');
+  assert.equal(deps.now?.(), 42);
+  assert.deepEqual(tokenized, { text: 'line', tokens: null });
+  assert.deepEqual(calls, ['tokenize:line', 'emit:line', 'log:ok']);
+});
+
+test('subtitle processing main deps builder preserves optional callbacks when absent', () => {
+  const deps = createBuildSubtitleProcessingControllerMainDepsHandler({
+    tokenizeSubtitle: async () => null,
+    emitSubtitle: () => {},
+  })();
+
+  assert.equal(deps.logDebug, undefined);
+  assert.equal(deps.now, undefined);
+});