This might not be the best rework - I was unsure if the *this* that would be available when called would see the appropriate object so I assumed not and pass it as a parameter.
Works, but may be bad form.
This removes the existing endpoints and replaces them with /theme.
/theme/:id - return a theme bundle containing all styling from this USER theme and any parents.
/theme/:engine/:id - return a theme bundle containing all styling from this STATIC theme and any parents
The theme bundle returns a marshalled JSON object containing:
styles - an array of strings representing the collected styles in loading order
snippets - an array ( currently empty ) of collected snippets.
The various bits of theme rendering code for <style> an style <link> have been swapped out with an 'onDidMount' call that loads the thendpoint and appends a series of <style> blocks to the brewRender's head.
This loses some caching advantages, but probably won't matter in the long run.
