Backend:
- ShareToken model (share_tokens collection)
- POST /jobs/{id}/share — create token (PM/PROD/ADMIN)
- GET /jobs/{id}/share — list active tokens
- DELETE /jobs/{id}/share/{token_id} — revoke token
- GET /public/share/{token} — unauthenticated preview with signed GCS URLs (6h TTL)
Returns video, captions, AD for all languages
Frontend:
- ShareView.tsx — public page at /share/:token with language switcher, video player, download tiles
- App.tsx — /share/:token route (no auth wrapper)
- QCDetail.tsx — "↗ Share link" button in header → modal to generate + copy link
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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