Video Generation

POST /v1/video/quote      → returns { credits, estimatedCostUsd }
POST /v1/video/queue      → returns { id, queue_id, status: "PROCESSING" }
POST /v1/video/retrieve   → returns { status: "PROCESSING" | "COMPLETED" | "FAILED", url? }

curl -X POST https://dolphy.chat/api/v1/video/quote \
  -H "Authorization: Bearer $DOLPHY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"wan-2-7-image-to-video","duration":"5s","resolution":"720p"}'

# → {"model":"...","duration":"5s","resolution":"720p","credits":18,
#    "estimatedCostUsd":{"member":1.17,"nonMember":1.80}}

curl -X POST https://dolphy.chat/api/v1/video/queue \
  -H "Authorization: Bearer $DOLPHY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "wan-2-7-image-to-video",
    "prompt": "a dolphin swims through nebula clouds",
    "duration": "5s",
    "resolution": "720p",
    "image_url": "https://your-cdn.example.com/source.jpg"
  }'

# → {"id":"FjkW...","queue_id":"c13a...","model":"wan-2-7-image-to-video",
#    "status":"PROCESSING","credits_charged":18}

curl -X POST https://dolphy.chat/api/v1/video/retrieve \
  -H "Authorization: Bearer $DOLPHY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"id":"FjkW..."}'

# While processing: {"id":"FjkW...","status":"PROCESSING"}
# When ready:      {"id":"FjkW...","status":"COMPLETED","url":"https://...","credits_used":18}
# On failure:      {"id":"FjkW...","status":"FAILED","reason":"..."}