Research to inform which mock platform (Amazon, Shopify, etc.) is worth
turning into a real integration next, after Etsy. Adds GMV/seller-count
market-size data for every platform in domains/accounts/platform.go, a
weighted scoring model (GMV 45%, API/inventory-webhook completeness 30%,
growth 15%, integration cost 10%), and the resulting ranked order.
Also fills in Etsy's own row, sourced directly from
domains/platforms/etsy/generated_client rather than external docs since
it's the one platform actually live in this repo: Etsy Open API v3 has no
webhook/push mechanism at all, and only the OAuth connection flow is
built so far - polling-based order/inventory sync doesn't exist yet. Etsy
is included as a reference score (3.85/10) against the same rubric used
for the unbuilt platforms, mainly as a sanity check on the model rather
than a claim that building it first was wrong.
Flags that the existing capability table's BigCommerce row doesn't match
an actual platform in this codebase (Tiktok does, and is now researched
instead), and that Tiktok Shop's API details are unconfirmed pending a
dedicated research pass.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>