Doubao Seedance 2.0

# Step 1: Submit text-to-video generation task
curl -X POST https://api.therouter.ai/v1/contents/generations/tasks \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao/doubao-seedance-2-0",
    "content": [
      {
        "type": "text",
        "text": "A golden retriever running through a sunlit wheat field, wide tracking shot, cinematic lighting"
      }
    ],
    "resolution": "1080p",
    "ratio": "16:9",
    "duration": 5,
    "watermark": false
  }'

# Step 2: Poll for completion (save task_id from response)
curl https://api.therouter.ai/v1/contents/generations/tasks/cgt-xxxxxx \
  -H "Authorization: Bearer $THEROUTER_API_KEY"

# Step 3: When status="succeeded", download video_url from the response