feat(#240): update generated API types for Mission Control Strip

Manually adds the new types to src/lib/generated/api.ts:
- Document.needsExpert: boolean (required field)
- TranscriptionQueueItemDTO schema
- TranscriptionWeeklyStatsDTO schema
- Paths: /api/transcription/{segmentation-queue, transcription-queue,
         ready-to-read, weekly-stats} and /api/documents/{id}/needs-expert
- Operations: matching typed request/response shapes

Fixes briefwechsel spec fixtures to include scriptType and needsExpert
so the Document type shape is satisfied.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/routes/briefwechsel/page.svelte.spec.ts

@@ -38,6 +38,8 @@ const makeDoc = (overrides: Record<string, unknown> = {}) => ({
 	documentDate: '1923-04-12',
 	location: 'Berlin',
 	metadataComplete: false,
+	scriptType: 'UNKNOWN' as const,
+	needsExpert: false,
 	sender: { id: 'p1', firstName: 'Hans', lastName: 'Müller' },
 	receivers: [{ id: 'p2', firstName: 'Anna', lastName: 'Schmidt' }],
 	tags: [],