feat: Fachwortliste für Whisper aus einer Quelle (T7 L2 Task 12)

npm run export:voice-vocabulary schreibt ApiCore-Whisper/vocabulary.txt
aus whisperInitialPrompt(); ein Wächter vergleicht Datei und Quelle im
Monorepo (im Backend-Image-Build ohne Nachbarordner übersprungen).
Datei mit LF über .gitattributes; scripts/ aus dem Nest-Build
ausgeschlossen.

Refs #27

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Backend/src/voice/core/voice-vocabulary-export.spec.ts

@@ -0,0 +1,26 @@
+import { existsSync, readFileSync } from 'node:fs';
+import { join } from 'node:path';
+import { whisperInitialPrompt } from './voice-vocabulary';
+
+const MONOREPO_ROOT = join(__dirname, '..', '..', '..', '..');
+const VOCABULARY_FILE = join(
+  MONOREPO_ROOT,
+  'ApiCore-Whisper',
+  'vocabulary.txt',
+);
+
+// The backend image build only sees ApiCore-Backend, so the comparison runs in
+// the monorepo checkout and is skipped inside that build.
+const inMonorepo = existsSync(join(MONOREPO_ROOT, 'ApiCore-Frontend'));
+const describeInMonorepo = inMonorepo ? describe : describe.skip;
+
+describeInMonorepo('whisper vocabulary export', () => {
+  it('the whisper vocabulary file equals whisperInitialPrompt()', () => {
+    // Windows checkouts may turn LF into CRLF; the content is what counts.
+    const onDisk = readFileSync(VOCABULARY_FILE, 'utf8')
+      .replace(/\r\n/g, '\n')
+      .replace(/\n$/, '');
+
+    expect(onDisk).toBe(whisperInitialPrompt());
+  });
+});