Just testing one question: does a Facebook Live embed and play inside this installable PWA?
Must be a public video — Facebook's embed plugin refuses private/unlisted ones.
This uses Facebook's own plugins/video.php embed, not a raw link to the Live page.
This saves on this device only, for now — it's a UI test of the capture flow. Once the Worker API is
deployed, "Save" will instead upload to /api/products like the real admin dashboard does.