Figure out error handling and logging #16

The streamlineError method is weird and now has been renamed to flattenError. There are other error handling methods sprinkled throughout rezept, jeopardy, and now stance-build. The rwsdk except() method needs help. The worker-error.tsx is in a few places. Need to just dig through the error handling code and figure out a better plan. Avoid things like err instance of Error ? x : y ternaries and err.cause ? err.cause : err.message stuff.