CaseMark stops Mike's matter chat from quietly losing history

CaseMark spent this round hardening the parts of Mike that lawyers touch day to day. The headline fix: matter chat messages could fail to save without anyone noticing, quietly dropping pieces of a case's conversation history. Now a failed save stops and reports itself instead of vanishing. And when the AI hits a mid-answer error - a quota or budget limit, say - the interface surfaces it as a clear failure rather than freezing mid-stream.

The same pass adds guardrails around the AI features: a cap on how many requests a single user can fire in a given window, which protects against runaway cost and abuse, plus a filter that keeps internal system error messages from leaking back to whoever is using the API.