fix(toast-load): infinite load of adding a card on a collection page

[tylersayshi]

Adding a card from a collection page shows 'Adding card...' forever. The collection page's <Suspense> boundary re-suspends on query invalidation, unmounting the component before.

React Query can fire the mutate-level onSuccess/onError callbacks that update the toast. This PR moves toast handling from mutate-level callbacks into definition-level callbacks on useMutation, which always fire regardless of component mount state.

I updated the docs and iframely service a bit from dev'ing on this as someone without any secrets or desire to fully run the backend.

thanks again for semble! this stuff is awesome.

[vercel]

@tylersayshi is attempting to deploy a commit to the Cosmik Team on Vercel.

A member of the Team first needs to authorize it.

[tylersayshi]

some js lib tool notes as an aside (feel free to disregard):

• pnpm is much nicer to use than npm (the cli) - it's --parallel flag would help make some of your package.json scripts nicer/cleaner imo https://pnpm.io/cli/run#--parallel
• vitest is much faster and less buggy than jest from my experience. jest has always led my projects to a doomed destiny of memory leaks and 20min CI jobs 😅