Volcengine TOS Document Process Preview and convert office documents stored in Volcengine TOS — PDF/PNG/JPG conversion, page count, HTML preview URL, and page-range export. Setup (once per environment) Install dependencies on first use: Then run scripts with Python 3.7+: If you see a for , reinstall dependencies. Environment Variables This skill relies on the TOS identity declared in the block. Common runtime variables are: | Environment Variable | Required | Description | | --- | --- | --- | | | Yes | TOS access key ID | | | Yes | TOS secret access key | | | Yes | TOS endpoint URL | | | Yes…