feat: photo jobs apply/reject flow with applied flag in history

- DB: add photo_jobs.applied column (init + migration + ensure)
- Worker: generate preview only (after_path), no longer mutates entry
- New POST /api/entries/:id/photo/jobs/:jobId/apply — apply done job
  result to entry (backs up current photo, marks applied)
- New POST /api/entries/:id/photo/jobs/:jobId/reject — discard result,
  delete temp file, mark rejected
- saveEnhance: apply AI result directly when sliders are at defaults
- Photo history: '✓ Применить' action for unapplied done AI jobs;
  'rejected' status label
- sweepOrphanedUploads keeps done-not-applied preview files

public/js/worker.js

@@ -35,6 +35,7 @@ const PHOTO_STATUS_LABELS = {
   processing: 'Обрабатывается',
   done: 'Готово',
   error: 'Ошибка',
+  rejected: 'Отклонено',
 };
 const PHOTO_STATUS_BADGE = {
   done: 'ai-badge-done',