Which workspace a page is in, for a link that names no workspace

For an old link (`/notes/p/<id>`, an email from before workspace URLs), so the app can send the tab to `/notes/w/<slug>/p/<id>`. It works across the caller's workspaces: the token may be for any of them. It answers only when Notes would let the caller read the page in its own workspace: they are a member with a product seat, Notes is on there, and they can see the page's space. Archived pages are located too, as the trash opens them. Every other case gets the same 404, byte for byte: no such page, someone else's page, a space the caller can't see, Notes turned off there, a malformed id, or a request made with an API key or an OAuth grant (those are bound to one workspace by consent). Both answers are `Cache-Control: no-store`. Rate-limited per user and per client IP (the edge's CF-Connecting-IP).

curl -X GET "https://example.com/v1/pages/497f6eca-6276-4993-bfeb-53cbbbba6f08/locate"

{  "workspace_id": "0967198e-ec7b-4c6b-b4d3-f71244cadbe9",  "slug": "string"}