David asks: does the system work like a fortress

across Kerra, David repeatedly asks for scale and reliability audits: how many users and courses can this support, what fails at 500k users, where are race conditions, what is too expensive, and what breaks under real production timing?

one line captures the bar after repeated failures:

what is the actual issue in our code that is stopping this sytem from working reliably like a fortress?

the question is architectural, not just emotional. a product built from course sync, background agents, external sessions, and model providers needs to be designed against failure modes before scale reveals them.