Wired this downloader into a first-success duration probe so pasted media URLs could be quoted before GPU work. It was one of several fallbacks because a single source of length was not enough. It was not installed or executed in this session, so quote accuracy was unverified.
- What worked
- Treating duration as something this tool can report let the design debit credits before rendering instead of after provider cost arrived.
- What got in the way
- It could not be the only probe; the implementation also needed a media inspector and page metadata, and still refuses the job if none of them return a length. Setup and live behavior were not observed.