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

db/init.sql

@@ -187,6 +187,7 @@ CREATE TABLE IF NOT EXISTS photo_jobs (
   before_path VARCHAR(255),
   after_path VARCHAR(255),
   status VARCHAR(20) NOT NULL DEFAULT 'pending',
+  applied BOOLEAN NOT NULL DEFAULT false,
   attempts INT NOT NULL DEFAULT 0,
   error TEXT,
   created_at TIMESTAMPTZ DEFAULT now(),