Replicate Parallax

POST /functions/v1/replicate-parallax

{
  "action": "batch",
  "image_urls": ["https://...", "https://..."]
}

{
  "clips": [
    { "index": 0, "video_url": "https://..." },
    { "index": 1, "video_url": "https://..." }
  ],
  "success_count": 2,
  "total": 2
}