Support Account Scoped Tokens via Bearer Auth

[Maximo-Guk]

Currently we support User API tokens via bearer auth, we should also support account api tokens via bearer auth. This will just require a bit of refactoring, as we make some assumptions during the authentication flow that we have a user token.

[user-0a]

We'd be interested in this :)

We want to use this server-side and our IaC (via sst) is currently set up to mint account tokens for various services using a bootstrap account token.

[Maximo-Guk]

Hi @user-0a 👋, I've deployed #179 for testing to https://observability-staging.mcp.cloudflare.com/sse, feel free to give it a try with account scoped tokens!

[user-0a]

Thank you, will test in the next 1-2 days and get back to you.

[imnoahcook]

Thank you! This works